Sustainable dyeing of selected natural and synthetic fabrics using waste teak leaves (Tectona Grandis L.)

2020 ◽  
Vol 24 (4) ◽  
pp. 357-374
Author(s):  
Akshita Agrawal ◽  
Sheetal Chopra
Keyword(s):  
Moisture Content ◽  
Tectona Grandis ◽  
Waste Utilization ◽  
Ash Content ◽  
Test Method ◽  
Fastness Properties ◽  
Light Fastness ◽  
Content Type ◽  
Wide Range ◽  
Natural And Synthetic

Purpose This paper aims to extract the dye colourant from teak leaves using different aqueous mediums (Alkaline, Neutral and Acidic); to characterize the dye in terms of yield %; ash content and moisture content; to standardize the conditions of application of dye extracted from teak leaves on selected natural and synthetic fabrics using selected natural and chemical mordants; to assess the colour value (K/S, L*, c*/ h*, a*, b*) and fastness properties of the dyed samples in terms of wash, rub, light and perspiration fastness; and to develop dyed and printed designs using combinations of mordant and extracted dye. Design/methodology/approach Stage 1 – Extraction of dye from teak leaves; and characterization of dye: yield% ash content and moisture content. Stage 2 – Preparation of fabrics for dyeing; optimization of mordanting parameters using pre mordanting method followed by post mordanting; and optimization of dyeing parameters. Stage 3 – Testing of dyed fabric – Colour Measurement; K/S L*a*b*/L*c*h*; fastness properties; wash fastness done in the Laundrometer using ISO 2 standard test method; crock fastness done by Crockmeter using AATCC 116–1995 test method; perspiration fastness tested by perspirometer using AATCC 15– 2007 test method; and light fastness assessment in Mercury Bulb Tungsten Filament (MBTF) light fastness tester using AATCC Test Method 16–2004. Findings The findings of the study show that waste teak leaves can be used as an effective dye for natural as well as synthetic fabrics giving a wide range of colours on wool, silk and nylon. The maximum relative colour strength of the extracted dye on unmordanted dyed samples was found to be at pH 5 on wool and silk and at pH 7 on nylon. A range of shades was obtained with the use of different mordants. The extracted dye showed moderate to good fastness properties in terms of light, wash, rub and perspiration on wool and silk and excellent on nylon. Fastness properties were found to improve with the application of mordants both as pre and post method. Various combinations of mordants and dye result in obtaining pleasing and harmonious colours which were used aesthetically for printing. Research limitations/implications Due to time constrains, extraction in an organic medium could not be done, which could be a further scope for study. Practical implications Dyeing using teak leaves is a step towards sustainability and effective waste utilization with promising potential for application on natural as well as synthetic fabrics. Good colour with added properties will provide excellent solutions for eco-friendly methods of dyeing. Social implications This paper demonstrates the new possibilities offered by innovative uses of by-products of the timber industry and open good prospects for alternatives to synthetic colourants and new markets for the textile industry. It offers a new tool for the development of slow fashion. Originality/value It is a common practice to prune the tree branches to improve wood quality; thus, leaves are easily available as by product from pruning and also from wood harvesting. In the present study, waste teak leaves (Tectona grandis L.) were used for the extraction of dye.

Development of bio-active pigment printed fabric loaded with nano-sized silver/zinc particles

2015 ◽  
Vol 44 (3) ◽  
pp. 143-147
Author(s):  
Mustafa Tutak ◽  
Özlem Bilget
Keyword(s):  
Antibacterial Properties ◽  
Cotton Fabrics ◽  
Test Method ◽  
Fastness Properties ◽  
Light Fastness ◽  
Application Process ◽  
Content Type ◽  
Screen Printing Technique ◽  
Fabric Surface ◽  
Nano Size

Purpose – This paper aims to evaluate the antibacterial properties of pigment printed fabric loaded with nano-sized silver and zinc. Design/methodology/approach – The pigment printing paste was mixed with nano-sized silver/zinc particles and applied to the cotton fabrics by the hand screen-printing technique. The nano-sized particles, distribution on the fabric surface, were analysed by scanning electron microscopy and energy-dispersive X-ray spectroscopy. The ASTM E2149-01 test method was used to determine the bacteriodynamic activity of the treated fabrics. The wash and light fastness properties of the treated fabrics were investigated. Findings – The experimental results of the study showed that antibacterial properties could be obtained by loading with nano-size silver/zinc particles on pigment printed cotton fabrics. There is no negative or positive effect of the addition of nano silver/zinc particles to the printing paste on fastness properties. Research limitations/implications – The nano-sized metal particles and pigment printing paste should be well mixed to achieve uniform distribution on the printed surface. Practical implications – The described process marks the introduction of a nano-technological aspect to pigment printing by its application to cotton fabrics. Originality/value – The novelty/originality of the study lies in the new application process of nano-size silver/zinc particles to the textile pigment printing for antibacterial properties.

Fruit shells of Camellia oleifera Abel as natural colourants for pigment printing of cotton fabric

2017 ◽  
Vol 46 (1) ◽  
pp. 56-63 ◽  
Author(s):  
Monthon Nakpathom ◽  
Buppha Somboon ◽  
Nootsara Narumol ◽  
Rattanaphol Mongkholrattanasit
Keyword(s):  
Cotton Fabric ◽  
Textile Industry ◽  
Camellia Oleifera ◽  
Fastness Properties ◽  
Light Fastness ◽  
Content Type ◽  
Colour Fastness ◽  
Colour Strength ◽  
Screen Printing Technique ◽  
First Time

Purpose The present study aims to focus on the feasibility of using an aqueous extract from the fruit shell of Camellia oleifera Abel as a source of natural colourant in printing-paste preparation for pigment printing of cotton fabric. The effects of pre- and post-mordanting with three common metallic mordants, that is AlK(SO4)2, CuSO4 and FeSO4 on colour yield and colour fastness properties are also investigated. Design/methodology/approach The printing paste was prepared by mixing the concentrated Camellia oleifera Abel fruit shell extract solution with commercially available synthetic thickener and binder. The fabric sample was printed with the prepared printing paste using a flat-screen printing technique. To determine the effects of pre- and post-mordanting, AlK(SO4)2, CuSO4 and FeSO4 mordant aqueous solutions with various concentrations were applied using the pad-dry technique. Comparisons between printing with and without mordants were evaluated in terms of colour strength (K/S values) and colour fastness to washing, light, crocking and perspiration. Findings Without the mordants, the printed fabric had a yellowish brown shade with acceptable colour fastness properties, that is fair to good wash fastness, moderate light fastness, good to very good crocking fastness and fair to good perspiration fastness. The use of mordants, especially CuSO4 and FeSO4, not only enhanced colour strength but also imparted different colours to the fabric. Compared to the unmordanted fabrics, colour fastness properties were mostly comparable or improved in the mordanted fabrics depending on the type and concentration of mordants. Research limitations/implications Although in the case of CuSO4 the light fastness was increased to a good to very good level, it is recommended that the final print be produced with a concentration of less than 0.125 gL−1 to yield the print with the residual amount of Cu metal under the limit, that is less than 50 ppm as regulated by the Oeko-Tex® standard. Practical implications The obtained prints from Camellia oleifera Abel fruit shell extract provided shades with satisfactory colour fastness to washing, light, crocking and perspiration. The extract from Camellia oleifera Abel fruit shell has the potential to be used as an alternative to synthetic dye in the textile industry. Originality/value The use of Camellia oleifera Abel fruit shells, which are considered as abundant byproducts of tea seed oil production, as natural colouring agents for pigment printing of cotton fabric has been reported for the first time. It will minimise the environmental impact of this waste and create more valuable textile products.

A simple approach for the synthesis of coumarin fluorescent dyes under microwave irradiation and their application in textile printing

2016 ◽  
Vol 45 (4) ◽  
pp. 217-224 ◽  
Author(s):  
G.H. Elgemeie ◽  
K.A. Ahmed ◽  
E.A. Ahmed ◽  
M.H. Helal ◽  
D.M. Masoud
Keyword(s):  
Optical Properties ◽  
Microwave Irradiation ◽  
Fluorescent Dyes ◽  
Fastness Properties ◽  
Reaction Products ◽  
Light Fastness ◽  
Content Type ◽  
Colour Strength ◽  
Silk Screen ◽  
New Generation

Purpose The purpose of this study is to successfully implement microwave irradiation for the rapid synthesis of novel fluorescent dyes. The prepared dyes are then applied for printing of polyester and polyamide by silk screen printing process. Design/methodology/approach A series of new N′-(methylene)-2-imino-2H-chromene-3-carbohydrazide derivatives 3a–r were synthesised in excellent yield and high atom economy by the Knoevenagel condensation of salicylaldehyde derivatives 1 and cyano-N′-methyleneaceto-hydrazide derivatives 2 in the presence of piperidine catalyst. The optical properties of the synthesised compounds were recorded; all of the compounds were found to be fluorescent in 1, 4-dioxane solution; they all emitted blue light (440-460 nm). This work shows that the optical properties strongly depend on the nature of the substituent, and indicate which type of substituent is favourable for a given application. It confirms that iminocoumarin derivatives could lead to a new generation of fluorescent probes, prone to easy modification of their chemical structure. These synthesised dyes are used to print polyester and polyamide fabrics using synthetic thickener in the printing paste for silk screen technique. Findings The structures of synthesised dyes were established and confirmed for the reaction products on the basis of their elemental analysis and spectral data (MS, IR and 1H-NMR). The suitability of the prepared dyestuffs for traditional printing on polyester and polyamide fabrics has been investigated. The prints obtained using the synthesised dyes were found to possess high colour strength and excellent overall fastness properties but relatively low light fastness. Research limitations/implications The synthesised fluorescent dyes were prepared by a simple reaction process in microwave. The optical properties for obtained dyes show include the fact that it will have various important applications. In addition, they were used for printing synthetic fabrics and were found to have good results. Practical implications The new fluorescent dyes’ system has excellent printing properties. Also they are superior in terms of yield, purity, colour strength and fastness properties which may lend them valuable commercial production. Originality/value The result of this work aimed to define the scope and limitation of the procedures for the synthesis of novel iminocoumarin dyes via a simple and economic way.

High temperature dyeing of PET fabric with natural colourants extracted from annatto seeds

2019 ◽  
Vol 48 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Monthon Nakpathom ◽  
Buppha Somboon ◽  
Nootsara Narumol ◽  
Rattanaphol Mongkholrattanasit
Keyword(s):  
High Temperature ◽  
Synthetic Dyes ◽  
Fastness Properties ◽  
Light Fastness ◽  
Content Type ◽  
Pet Fabric ◽  
Uv Absorber ◽  
Dyeing Method ◽  
Dyeing Parameters ◽  
Dyed Fabric

Purpose The purpose of this study is to investigate the possibility of dyeing polyester (PET) fabric with natural dye extracted from annatto seeds using high temperature dyeing method. Design/methodology/approach PET fabric was dyed with annatto extract by varying dyeing parameters (temperature, time, pH and dye concentration) to determine the optimum dyeing conditions. The influences of KAl(SO4)2, FeSO4, gallnut mordants or a commercial UV absorber on colour yield and fastness properties were further studied. Findings Optimum results were obtained when the fabric was dyed at 130°C for 30 min in a dyebath containing 15 per cent (owf) annatto dye at pH 6. The dyed fabric had an orange shade and exhibited good to excellent wash, crock, perspiration fastness and fair light fastness. Further dyeing with mordants or UV absorber mostly resulted in lower colour yield and similar fastness properties. Research limitations/implications Although the light fastness was slightly improved to moderate level for the sample with UV absorber, a noticeable colour staining on cotton portion of multi-fibre fabric occurred when subjected to standard washing test. Compared to C.I. Disperse Orange 73, the annatto dye exhibited comparable colour fastness but had inferior light fastness when dyed at approximately the same colour strength. Originality/value Natural colourants from annatto seeds can be used to dye PET fabric at high temperature without mordants, yielding deep orange shade and satisfactory fastness properties. This study provides a promising application to reduce the environmental impact of synthetic dyes.

scholarly journals WASTE OF THE LICURI (Syagrus coronata) NUT SHELLS: AN ALTERNATIVE ENERGY SOURCE

2019 ◽  
Vol 8 (3) ◽  
Author(s):  
Verônica Scalet ◽  
Alessandra Luiza Da Róz ◽  
Luis Ricardo Oliveira Santos ◽  
Ana Larissa Santiago Hansted ◽  
Ariane Aparecida Felix Pires ◽  
...  
Keyword(s):  
Moisture Content ◽  
Energy Production ◽  
Alternative Energy ◽  
Lignin Content ◽  
Physicochemical Characterization ◽  
Ash Content ◽  
Hot Water ◽  
Klason Lignin ◽  
Fixed Carbon ◽  
Wide Range

The licuri nut shell is a potential source of biomass for energy production. The aim of this study was the physicochemical characterization of the licuri shell, focusing on the increase of its use as a fuel. The material was collected in Caldeirão Grande-BA and the characterization included a wide range of analyses such as: moisture content, bulk density, particle size distribution, ash content, volatile matter, fixed carbon, high heating value (HHV), hot water and cyclohexane/ethanol extractions, Klason lignin content, and thermogravimetric analysis (TGA). The obtained results  were: moisture content (11,1%), HHV (4652 kcal.kg-1), Klason lignin content (36,86%), volatile content (74,91%), and fixed carbon (21,19%). The results showed that the material can be considered suitable for the purpose of generating energy when compared with other types of biomasses. The ash content (3,9%) and the extractives content (46,75%) are in accordance with the values observed for the babassu nut shell, Brazilian nut shell, and coconut. Finally, by the TGA analysis, it was observed that the degradation peak occurred at 272°C with a loss of 65% of weight. With these results, the licuri nut shell has shown to be potentially promising for the energy production.

Improving ester hydrolytic stability using triblock polyalkylene glycols

2018 ◽  
Vol 70 (2) ◽  
pp. 418-422 ◽  
Author(s):  
Martin Robert Greaves ◽  
Evelyn Zaugg Hoozemans
Keyword(s):  
Raw Materials ◽  
Triblock Copolymers ◽  
Hydrolytic Stability ◽  
Test Method ◽  
Content Type ◽  
Polyalkylene Glycol ◽  
Practical Implications ◽  
Selection Of ◽  
Natural And Synthetic

Purpose This paper aims to examine the role of different polyalkylene glycol architectures in improving the hydrolytic stability of natural and synthetic esters. Design/methodology/approach Hydrolytic stability measurements were conducted using a modified ASTM D2619 test method in which several polyalkylene glycol chemistries were examined at concentrations of up to 10 per cent in a selection of esters. Findings The inclusion of triblock copolymers derived from ethylene oxide (EO) and 1,2-propylene oxide (PO) and with an EO content of about 30 per cent produced significant improvements in the hydrolytic stability of natural and synthetic esters. Stability improved with increased concentration of the triblock. Research limitations/implications The study did not evaluate the vast array of polyalkylene glycol structures that can be derived from other higher alkylene oxides. Practical implications Improving the hydrolytic stability of esters can offer the possibility of creating longer life environmentally acceptable lubricants (EALs). Social implications This discovery should allow longer life EALs to be designed thereby using less raw materials over a determined period. It may also allow more replacement of conventional hydrocarbon lubricants. Originality/value Triblock copolymers are rarely used in lubricants. Their use as components of ester-based EALs is new.

Antibacterial evaluation of cotton fabrics by using novel sulfonamide reactive dyes

2017 ◽  
Vol 46 (3) ◽  
pp. 210-217 ◽  
Author(s):  
Hatem E. Gaffer ◽  
Mohamed R. Elgohary ◽  
Hassan Ali Etman ◽  
Saad Shaaban
Keyword(s):  
Diazonium Salt ◽  
Reactive Dyes ◽  
Coupling Reaction ◽  
Antimicrobial Activities ◽  
Cotton Fabrics ◽  
Proton Nuclear Magnetic Resonance ◽  
Fastness Properties ◽  
Light Fastness ◽  
Content Type ◽  
Cellulose Fabrics

Purpose The purpose of this paper was to synthesize novel antibacterial reactive dyes for dyeing cotton fabrics. Design/methodology/approach Four synthetic novel antibacterial reactive dyes based on sulfonamide (D1-D4) have been synthesized by the coupling reaction of sulfonamide diazonium salt with sulfonamido-cyanurated 7-amino-4-hydroxynaphthalene-2-sulfonic acid “j-acid”. The chemical structure of the synthesized dyes was secured by their spectral data [infra red (IR) and proton Nuclear magnetic Resonance (1HNMR)]. Findings The prepared reactive dyes (D1-D4) were applied to cotton fabrics. Optimum conditions of the dying samples at sodium sulfate 100 g/l, liquor ratio (L.R.) 1:10, sodium carbonate 20 g/l at 80°C (D1, D2 and D4), 60°C (D3 for 60 min) were investigated. The fastness properties toward washing, perspiration, rubbing and light were evaluated. Dyed fabrics showed good light fastness property and good to very good washing and perspiration fastness properties according to the gray scale. Antimicrobial activities for synthesized dyes showed excellent activity against gram-negative organisms such as Pseudomonas aeruginosa and Proteus mirabilis faecalis, whereas very good activity against gram-positive organisms such as Staphylococcus aureus and Enterococcus faecalis with respect to the standard drugs ampicillin and chloramphenicol. Originality/value The principle advantages in this study were that the synthesis of novel synthesized dyes by introducing bisulfonamide-based moieties to increase the antimicrobial activity of the cellulose fabrics could be used as a medical textile, short reaction time and reaction procedure conducted in few steps, the work up is convenient and thus the starting material can be easily prepared.

scholarly journals Synthesis and application of 2-aminothiadiazole disperse dyes for nylon fabrics

2001 ◽  
Vol 66 (2) ◽  
pp. 87-93
Author(s):  
Maradiya Raghav ◽  
Vithal Patel
Keyword(s):  
Elemental Analysis ◽  
Spectral Studies ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
Light Fastness ◽  
Nylon Fabric ◽  
Wide Range

Some disperse dyes based on 2-amino-5-mercapto-1,3,4-thiadiazole have been prepared by coupling with various N-arylacrylamides. The dyes were characterized by IR spectral studies and elemental analysis. All the dyes were applied as disperse dyes on nylon fabric. These dyes have been found to give a wide range of color shades with very good depth and levelness on fabrics. The percentage dye bath exhaustion and fixation on the fabric have been found to be very good. The dyied fabrics showed moderate to good light fastness and very good to excellent washing, rubbing, persperation and sublimation fastness properties.

A PZT-based electromechanical impedance method for monitoring the moisture content of wood

Sensor Review ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Quan Zhai ◽  
Jicheng Zhang ◽  
Guofeng Du ◽  
Yulong Rao ◽  
Xiaoyu Liu
Keyword(s):  
Moisture Content ◽  
Mechanical Impedance ◽  
Impedance Method ◽  
Impedance Change ◽  
Monitoring Method ◽  
Content Type ◽  
Electromechanical Impedance ◽  
Wide Range ◽  
Impedance Technique ◽  
Piezoelectric Impedance

Purpose At present, piezoelectric impedance technology has been used in the study of wood damage monitoring. However, little effort has been made in the research on the application of piezoelectric impedance system to monitor the change of wood moisture content (MC). The monitoring method of wood MC is used by piezoelectric impedance technique in this study. Design/methodology/approach One piezoceramic transducer is bonded to the surface of wood specimens. The MC of the wood specimens increases gradually from 0% to 60% with 10% increments; the mechanical impedance of the wood specimen will change, and the change in the mechanical impedance of the structure is reflected by monitoring the change in the electrical impedance of lead zirconate titanate. Therefore, this paper investigates the relationship between wood MC change and piezoelectric impedance change to verify the feasibility of the piezoelectric impedance method for monitoring wood MC change. Findings The experiment verified that the real part of impedance of the wood increased with the increase of wood MC. Besides, the damage index root mean square deviation is introduced to quantify the damage degree of wood under different MC. At the same time, the feasibility and validity of this experiment were verified from the side by finite element simulation. Finally, MC monitoring by piezoelectric impedance technique is feasible. Originality/value To the best of the authors’ knowledge, this work is the first to apply piezoelectric ceramics to the monitoring of wood MC, which provides a theoretical basis for the follow-up study of a wide range of wood components and even wood structure MC changes.

scholarly journals TEMPE KACANG KOMAK DENGAN BEBERAPA PEMBUNGKUS YANG BERBEDA SELAMA FERMENTASI

Pro Food ◽  
2018 ◽  
Vol 4 (2) ◽  
pp. 343
Author(s):  
Wiharyani Werdiningsih ◽  
Baiq Dwintarahma Putri ◽  
Sri Widyastuti
Keyword(s):  
Moisture Content ◽  
Protein Content ◽  
Fermentation Process ◽  
Ash Content ◽  
Diversity Analysis ◽  
Real Difference ◽  
Single Factor ◽  
Natural And Synthetic

ABSTRACT               Wrapper has a very important function, which is as a protection from deterioration. The type of wrapper can be used to package tempeh produced by natural and synthetic wrapper. The aimed of this research was to determine the effect of wrap types on quality of lablab bean tempeh during fermentation process. The experiment was conducted by a Randomized Complete Design (RCD) menthod with single factor (variation of lablab bean tempeh wrap) 5 types of wrapping as treatment 4 replications. The parameter were moisture content, ash content, protein content, total fungus, observation of mycellium, value of raw tempeh appearance such as compactness of mycelium, flavor , taste and tekstur. The observed were analyzed using diversity analysis (ANOVA) at 5% level more over. The significant result were tested by using the further Test of Honest Real Difference (HRD). The results indicated that using several types of wrapping had a significant effect on protein content, preference of mysellium and the taste of lablab bean tempeh but they are not show significantly effect in ash content, moisture content, preferences of texture, and preferences of flavour. Lablab tempeh wrapped by teak leaf produces the best treatment with protein content 11.64%, moisture content 63.37%, and ash content 0.51%, taste, aroma, texture and misellium compactness rather preferred by panelists. Keyword : lablab bean tempeh, tempeh wrapper             ABSTRAK Pembungkus memiliki fungsi yang sangat penting, yaitu sebagai pelindung dari kerusakan. Jenis pembungkus yang dapat digunakan untuk mengemas tempe berasal dari jenis pembungkus alami maupun sintetis. Penelitian ini bertujuan untuk mengetahui pengaruh beberapa jenis pembungkus terhadap mutu tempe kacang komak selama proses fermentasi. Metode penelitian yang digunakan adalah metode eksperimental dengan rancang percobaan Rancangan Acak Lengkap dengan faktor tunggal yaitu jenis pembungkus tempe kacang komak, yaitu: daun pisang, daun jati, daun waru daun kakao dan plastik.Parameter yang diamati meliputi parameter kimia (kadarair, kadar abu, kadar protein) parameter pengamatan misellium, parameter pengamatan mikroorganisme (total jamur), parameter organoleptik (kekompakan misellium, aroma, tekstur dan rasa). Hasil penelitian menunjukkan bahwa perlakuan jenis pembungkus memberikan pengaruh nyata terhadap kadar protein, kesukaan kekompakan misellium dan kesukaan rasa tempe kacang komak tetapi memberikan pengaruh yang tidak berbeda nyata terhadap kadar abu, kadar air, kesukaan tekstur, dan kesukaan aroma tempe kacang komak. Jenis pembungkus daun jati menghasilkan tempe kacang komak terbaik dengan kadar protein 11,52%, kadar air 63,64%, kadar abu 0,51%, rasa disukai, dan aroma, tekstur, dan kekompakan misellium agak disukai panelis.   Kata kunci : tempe kacang komak, pembungkus tempe.

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