Partial Characterisation and Colorimetric Characteristics of Sargassum sp. Colorant on Treated Polyester Fabric with Dendrimer

2017 ◽  
Vol 737 ◽  
pp. 329-334 ◽  
Author(s):  
Muhammad Ismail Ab Kadir ◽  
Mohd Rozi Ahmad ◽  
Asmida Ismail
Keyword(s):  
Polyester Fabric ◽  
Methanol Solution ◽  
Natural Dyes ◽  
Aluminium Foil ◽  
Textile Dyeing ◽  
Partial Characterisation ◽  
Dyed Fabrics ◽  
Dyed Fabric ◽  
Ground Powder

This study focuses on the characterization of pigment compounds presence in Sargassum sp. extracts. The ground powder of dry Sargassum sp. was macerated in in methanol solution at 60°C for 48 hours in an aluminium foil-wrapped conical flask (to provide the dark environment). The extracted colourant was measured with UV-vis Spectrophotometer and Q-TOF LCMS to determine the compounds presence. The extracted colourant also used to dye pretreated and untreated polyester fabric with poly(amidoamine) dendrimer at different concentrations with and without mordants. The exhaustion dyeing with the simultaneous mordanting procedure was carried at 85°C for 60 minutes. The colorimetric properties of the dyed fabrics were then analysed. The results showed that the pigment compounds presence in Sargassum sp. extracts is fucoxanthin and chlorophyll. The application of dendrimer improved K/S values of the dyed fabric. Thus, Sargassum sp. extract is suitable to be used as natural dyes for textile dyeing.

scholarly journals Extraction of Eco-Friendly Natural Dyes from Pina Leaves and their Application on Wool Fabrics

2019 ◽  
Vol 7 (4.14) ◽  
pp. 382
Author(s):  
A. J. Jalil ◽  
S. Mahmood ◽  
A. H. Abdul Rashid ◽  
S. H. Nasir ◽  
S. A. Ibrahim ◽  
...  
Keyword(s):  
Green Technology ◽  
Natural Dyes ◽  
Ananas Comosus ◽  
Light Fastness ◽  
Wool Fabrics ◽  
Textile Dyeing ◽  
Before And After ◽  
Dyed Fabrics ◽  
Technology Initiatives ◽  
Pineapple Leaves

Natural dyes comprise of colorants that are obtained from animals or vegetable matters without any chemical processing. Natural dyes can substitute synthetic dye and promotes green technology initiatives in the field of textile dyeing. This study was carried out by extracting dyes from pineapple leaves (Ananas Comosus) using three stage mordanting methods using different mordants namely pre-mordanting, post-mordanting and simultaneous dyeing-mordanting. The mordants used were aluminium potassium sulphate, white vinegar and sodium chloride (NaCl). Wool fabrics were used for dyeing. The strength of colour and K/S values of the dyed fabrics were measured before and after washing. The colourfastness to washing, rubbing and light fastness of the fabrics were conducted to investigate the performance of the dye and mordants. The results indicate that the washing, rubbing and light fastness properties of dyed samples were between good to excellent grades.  

Synthesis and Characterization of Zinc Coated Carica papaya Extracts for Solid-State Application

2021 ◽  
Vol 885 ◽  
pp. 53-57
Author(s):  
Moses E. Emetere ◽  
Ikechukwu M. Ahiara
Keyword(s):  
Carica Papaya ◽  
Ethanol Solution ◽  
Methanol Solution ◽  
Synthesis And Characterization ◽  
Short And Long Term ◽  
Green Solution ◽  
Conventional Type ◽  
Butanol Solution

The evolution of semiconductor from the conventional type to organic semiconductor has not convincingly shown that it is eco-friendly both in the short and long term. This research presents the green solution bio-semiconductor that was synthesized from zinc coated carica papaya. It was observed that carica papaya extracts do not respond significantly to the extracting solution (methanol, ethanol and butanol). The band gap of sample 1 (extract in methanol solution), sample 2 (extract in ethanol solution) and sample 3 (extract in butanol solution) was calculated as 1.98 eV, 2.01eV and 1.93 eV respectively. Further research is therefore recommended for the perfection of the bio-semiconductor.

Automatic Defect Detection of Yarn-Dyed Fabrics Based on Energy Fusion and Local Binary Patterns

2012 ◽  
Vol 472-475 ◽  
pp. 3039-3042 ◽  
Author(s):  
Wen Yu Li ◽  
Long Di Cheng ◽  
Wen Liang Xue
Keyword(s):  
Defect Detection ◽  
Color Space ◽  
Local Binary Patterns ◽  
High Detection Rate ◽  
Energy Feature ◽  
Dyed Fabrics ◽  
Dyed Fabric ◽  
True Color ◽  
Real Time Application ◽  
Log Gabor

For the purpose of realizing fast and effective detection of defects of yarn-dyed fabric, and in consideration of the inherent characteristics of texture, i.e., color and structure, an approach for automatic defect detection is proposed in this paper. The image of yarn-dyed fabric to be enhanced is first converted from RGB true color space to L*a*b* color space. Then Log-gabor filters filter chromatic and brightness channels, and energy feature images are acquired after energy is fused between chromatic and brightness. Finally defects of yarn-dyed fabrics can be detected on the energy feature images using local binary patterns. The proposed method can detect colored and structural flaws. Experimental results for the defect detection from six kinds of yarn-dyed fabrics indicate that a high detection rate is achieved for the proposed method. It is fast enough to be possible for real-time application.

Synthesis and Characterization of Rod Like Nano-sized Cobaltammine Complexes as Textile Dyeing Agents

2018 ◽  
Vol 3 (41) ◽  
pp. 11627-11633
Author(s):  
Jagriti Behal ◽  
Varinder Kaur ◽  
Jakub Mrzygłód ◽  
Marcin Hoffmann ◽  
Agnieszka Janiak ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Textile Dyeing

A novel functional disperse dye doped with graphene oxide for improving antistatic properties of polyester fabric using one-bath dyeing method

2019 ◽  
Vol 90 (5-6) ◽  
pp. 655-665 ◽  
Author(s):  
Lihua Fan ◽  
Yongsong Tan ◽  
Jeremiah Amesimeku ◽  
Yunjie Yin ◽  
Chaoxia Wang
Keyword(s):  
Graphene Oxide ◽  
Polyester Fabric ◽  
Disperse Dye ◽  
Reduction Time ◽  
Dyeing Process ◽  
Functional Dyes ◽  
One Bath Dyeing ◽  
Dyeing Method ◽  
Dyed Fabric ◽  
Microscopic Morphology

A novel functional disperse dye doped with graphene oxide for antistatic properties of polyester fabric was achieved, which means that the dyeing and antistatic finishing can be simultaneously obtained by a one-bath method. Functional dyes were used to dye polyester fabric by a high-temperature, high-pressure dyeing method. The surface microscopic morphology of the dyed polyester fabric, and the dispersion properties of the disperse dye, graphene oxide, and the functional disperse dye, were characterized by scanning electron microscopy. The effects of the dyeing temperature on the particle sizes of three dyeing liquors were explored; this revealed that the temperature of the dyeing process had no effect on particle size. The dosage and reduction time of graphene oxide were investigated. The surface electrical resistance of the dyed fabric, 9.8 × 106 Ω, obtained at a condition of 2% (o.m.f) graphene oxide with a reduction time of 30 min, achieved A-grade antistatic standard. Furthermore, the rubbing and washing fastness of the treated fabric were 4- and 4 ∼ 5 grades, respectively. This preparation of the functional disperse dye provides a possibility in one-bath dyeing and antistatic finishing of polyester fabric.

scholarly journals Dyeing of Polyester Fabric with Natural Colorants Extracted from Mahogany (Swieteniamahagoni) Seed Pods

2020 ◽  
Vol 11 (1) ◽  
pp. 37-42
Author(s):  
Md Abdullah Al Mamun ◽  
Mohammad Mamun Hossain ◽  
Mubarak Ahmad Khan
Keyword(s):  
Crude Extract ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Color Fastness ◽  
Color Strength ◽  
Uv And Ir Spectra ◽  
Natural Colorants ◽  
Dyeing Method ◽  
Exhaust Dyeing ◽  
Dyed Fabric

Polyester fabric is usually dyed with disperse dyes which has severe limitations specially toxicity and environmental issues. The aim of the present research is to introduce an ecofriendly dyeing process for polyester fabric with natural dyes. The natural colorants were extracted from mahogany seed pods using the simple acid boiling method. The spectroscopic analysis of the crude extract was carried out by UV and IR spectra of the extracted dyes and illuminated the presence of natural tannins as coloring materials in the crude extract. 10g fabric was dyed in 200cc extracted solution at 130⁰C for 60 minutes in exhaust dyeing method followed by neutralization and soaping. Finally, a light brown dyed fabric was obtained. The dyed fabric exhibited color strength in terms of k/s value of 0.63 (λmax 360nm), lightness of 80.565 and chromaticity value of 12.002 CIE units. Different samples were dyed by fluctuating the dyeing period. The dyeing traits of the dyed materials were judged in terms of their color strength and fatness properties. All testes were carried out following the ISO standards. From the results, it is lucid that the dyed fabric showed acceptable color fastness properties in case of all fastness except color fastness to light. It is observed that dyeing time had profound influence on the color strength (k/s value) of the dyed material. The k/s value increases with the increase of dyeing period up to 120 minutes. The maximum color strength (0.76) was noted for the fabric. The shorter dyeing time produces lighter samples and the longer dyeing time produced colorful samples. Journal of Engineering Science 11(1), 2020, 37-42

Ultrasound Dyeing of Polyester Using Natural Colorant from Melastoma malabathricum l.

2015 ◽  
Vol 1134 ◽  
pp. 66-69 ◽  
Author(s):  
Tengku Muna Shaheera Tuan Zainal Abidin ◽  
Mohd Rozi Ahmad ◽  
Muhammad Ismail Ab Kadir ◽  
Nor Juliana Mohd Yusof ◽  
Wan Yunus Wan Ahmad
Keyword(s):  
Sodium Hydroxide ◽  
Conventional Method ◽  
Alkaline Treatment ◽  
Polyester Fabric ◽  
Dye Uptake ◽  
Natural Colorant ◽  
Melastoma Malabathricum ◽  
Dyed Fabrics ◽  
Ultrasound Dyeing ◽  
Lower Temperature

This paper reports on the application of natural dyes on polyester fabric. Melastoma malabathricum l. was extracted using conventional method of boiling for an hour. Plain lightweight polyester fabric was treated with sodium hydroxide as an alkaline treatment and Chitosan prior to dyeing in an attempt to increase the dye uptake. The dye extract of Melastoma malabathricum l. was applied on the polyester fabric at 85°C for an hour by exhaustion dyeing and 40 minutes for ultrasound dyeing. The colors of the dyed fabrics were measured using colour spectrophotometer and evaluated for washfastness. Ultrasound dyeing gave deeper colour shades to the fabric even though dyeing was conducted at lower temperature for 40 minutes. The alkaline treated fabrics dyed using ultrasound gave lower value of L* which indicate higher dye uptake and darker colour. The ratings for colourfastness to washing were between 4/5 to 5.

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