scholarly journals The behavior in finishing of textile materials made of man-made fibers containing ZnO in blends with cotton

2018 ◽  
Vol 69 (03) ◽  
pp. 212-218
Author(s):  
POPESCU ALINA ◽  
CHIRILA LAURA ◽  
TOMA DOINA ◽  
RASCOV MARIAN ◽  
DINCA LAURENTIU CHRISTIAN ◽  
...  
Keyword(s):  
Mechanical Characteristics ◽  
Water Vapor Permeability ◽  
Color Difference ◽  
Sem Analysis ◽  
Point Of View ◽  
Vapor Permeability ◽  
Preliminary Treatment ◽  
Textile Materials ◽  
Chemical Agents ◽  
Before And After

The objective of this study was to investigate the behavior in finishing of textile materials made of man-made fibers containing ZnO in blends with cotton. It has been studied the possibilities of reducing the concentration of the chemical agents considered to be aggressive for the functional textile fibers, the temperature and the duration of the processes, as well as the number of technological operations performed, so that the dyeing quality will not suffer and the dyed samples to be acceptable from the uniformity and fastness point of view. To highlight the influence of the chemical auxiliaries used in finishing operations, the process temperature, pH and the treatment duration on the phys - ical-chemical and physical-mechanical characteristics of the functional fibers, various methods of preliminary treatment and dyeing were applied in different experimental variants. In order to assess the preliminary treatments performance from whiteness degree and hydrophilicity point of view, the fabrics were tested before and after preliminary treatments. Finished fabrics (preliminary treated and dyed) were tested for the efficiency of the performed treatments in terms of color difference attributes and color fastness. The finished fabrics were also characterized in terms of the main physical-chemical and physical-mechanical characteristics: mass, tensile strength, tearing strength, water vapor permeability, air permeability. SEM analysis was used to investigate the surface morphology of treated fabrics. Antibacterial activity of treated samples was tested against the Staphylococcus aureus test strain.

scholarly journals Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4717 ◽  
Author(s):  
Jelena Pajnik ◽  
Ivana Lukić ◽  
Jelena Dikić ◽  
Jelena Asanin ◽  
Milan Gordic ◽  
...  
Keyword(s):  
Release Kinetics ◽  
Antibacterial Properties ◽  
Water Vapor Permeability ◽  
Weibull Model ◽  
Vapor Permeability ◽  
E Coli ◽  
Supercritical Solvent ◽  
Composite Polymers ◽  
Before And After ◽  
Impregnation Time

In the present study, supercritical solvent impregnation (SSI) has been applied to incorporate thymol into bio-composite polymers as a potential active packaging material. Thymol, a natural component with a proven antimicrobial activity, was successfully impregnated into starch-chitosan (SC) and starch-chitosan-zeolite (SCZ) films using supercritical carbon dioxide (scCO2) as a solvent. Experiments were performed at 35 °C, pressures of 15.5 and 30 MPa, and an impregnation time in the range of 4–24 h. The highest impregnation yields of SC films with starch to chitosan mass ratios of 1:1 and 1:2 were 10.80% and 6.48%, respectively. The addition of natural zeolite (15–60%) significantly increased the loading capacity of films enabling thymol incorporation in a quantity of 16.7–27.3%. FTIR and SEM analyses were applied for the characterization of the films. Mechanical properties and water vapor permeability of films before and after the impregnation were tested as well. Thymol release kinetics in deionized water was followed and modeled by the Korsmeyer-Peppas and Weibull model. SCZ films with thymol loading of approximately 24% exhibited strong antibacterial activity against E. coli and methicillin-resistant Staphylococcus (S.) aureus (MRSA).

Effect of Thermocycling on the Properties of Goat Skin Leather

2011 ◽  
Vol 399-401 ◽  
pp. 1573-1576
Author(s):  
Xue Jing Zheng ◽  
Shu Hao Huo ◽  
Jie Liu ◽  
Kun Wang ◽  
Ke Yong Tang
Keyword(s):  
Water Vapor ◽  
Thermal Treatment ◽  
Dimensional Stability ◽  
Transmission Rate ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Water Vapor Transmission Rate ◽  
Shrinkage Temperature ◽  
Upper Limit ◽  
Before And After

The pickled goat skins were crosslinked by chromium, aluminum, wattle extract and chestnut extract, respectively. The samples were thermal treated in a container held at different temperature for 5 h for different cycles. The xerothermic stability, water vapor permeability and dimensional stability of the samples were characterized before and after thermal treatment. The effect of thermocycling on the properties of tanned samples was discussed. It was found that the thermocycling at moderate temperature (50 °C) exerted little influence on the xerothermic shrinkage temperature (Txs) of the tanned collagen fibers. The treatment at higher upper limit temperature (100 °C and 150 °C) decreases the Txs and results in an impaired thermal stability. The water vapor transmission rate was decreased after the thermal treatment, likely due to the reduction of the amount of hydrophilic groups of collagen macromolecules as well as the decrease of the pore ratio of leather. Treatment at high temperature damaged the dimensional stability of the specimens.

The Durability of Flame Retardant and Thermal Protective Cotton Fabrics during Domestic Laundering

2012 ◽  
Vol 441 ◽  
pp. 255-260 ◽  
Author(s):  
Wei Bang Chen ◽  
Ying Ying Wan ◽  
Fei Que ◽  
Xue Mei Ding
Keyword(s):  
Thermal Resistance ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Protective Clothing ◽  
Flame Retardants ◽  
Thermal Protection ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Before And After ◽  
Resistance Value

Flame retardant fabrics have been broadly used for protective clothing, which have strictly requirements on both flame retardancy and thermal protection. Usually, domestic laundering will be carried out frequently to clean these protective garments. However, little research on the performance durability of this type of fabrics after domestic laundering has been reported. This paper selected fabrics of 8 types of cotton and its blend fibers, which were treated with flame retardants Pyrovatex CP, Proban, CFR-201, SCJ-968 respectively. The damaged length, after flame time, after glow time, TPP value, thermal resistance value, weight, thickness, air permeability and water vapor permeability (WVP) of the samples were measured before and after 15 cycles domestic laundering cycles. Results show that the flame retardancy of the 8 fabrics reduce with launderings as measured by the increase in damaged length and after glow time. The TPP increase probably resulted from the increase in the thickness and thermal resistance of the finished fabrics. Domestic laundering resulted in only a slight change in the comfort properties of the fabrics.

scholarly journals Biological Modification of Pentosans in Wheat B Starch Wastewater and Preparation of a Composite Film

2021 ◽  
Author(s):  
Piwu Li ◽  
Fei Zhao ◽  
Xiaofeng Wei ◽  
Xiangling Tao ◽  
Feng Ding
Keyword(s):  
Composite Film ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Processing Plant ◽  
Potential Candidate ◽  
Degrading Bacterium ◽  
Plastic Materials ◽  
Before And After ◽  
Edible Packaging ◽  
Biological Modification

Abstract Background: Petrochemical resources are becoming increasingly scarce, and petroleum-based plastic materials adversely impact the environment. Thus, an urgent need exists to replace petroleum-based materials with new and effective renewable materials.Results: In this study, we isolated a wheat pentosan-degrading bacterium (MXT-1) from wheat-processing plant wastewater. The MXT-1 strain was identified using molecular biology techniques. We then analyzed the degradation characteristics of the bacteria in wheat pentosan. We found that wheat pentosan was effectively degraded by bacteria. The molecular weight of fermented wheat pentosan decreased from 1730 to 257 kDa. The pentosan before and after the biological modification was mixed with chitosan to prepare a composite film. After fermentation, the water-vapor permeability of the wheat pentosan film decreased from 0.2769 g·mm·(m2·h·KPa)-1 to 0.1286 g·mm·(m2·h·KPa)-1. The smooth and dense surface morphologies of the film was observed by scanning electron microscopy after fermentation. The tensile strength of the film decreased after fermentation modification, whereas the flexibility increased.Conclusion: The results of this study have proved that the modified pentosan film could be a potential candidate for edible packaging films.

scholarly journals Mechanical and barrier characteristics of colored edible collagen casings

2006 ◽  
pp. 59-68 ◽  
Author(s):  
Nebojsa Vinokic ◽  
Ljiljana Petrovic ◽  
Vera Lazic ◽  
Natalija Dzinic ◽  
Vladimir Tomovic
Keyword(s):  
Water Vapor ◽  
Mechanical Characteristics ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Food Grade ◽  
Very High

The paper is consented with the possibility of food grade colors incorporation (in different concentrations) into edible collagen casings. The barrier characteristics of the control (K) and t\\'o experimental groups of colored edible collagen casings (O I and O II) were investigated after the production and different periods of storage. The analysis of the obtained results shows that food grade colors, added in different concentrations to the collagen casings, influence some parameters of mechanical characteristics - tearing force in the first place. Tearing force of dry casings increases and of wet casings decreases with the increase of color concentration. During storage, the tearing force of dry samples was decreasing and of the wet ones increasing. The effect of added food-grade color on water-vapor permeability is minor, and the values are very high and uniform in all three investigated groups. The addition of color to casings resulted in significantly lower transparency, and increased color concentration caused further decrease of transparency.

Hydrophilicity, Solubility and Optical Properties in Composite Films of Gelatin and Bentonite Clay in its Natural Form or Modified

2018 ◽  
Vol 912 ◽  
pp. 136-140 ◽  
Author(s):  
Mayra Keroly Sales Monteiro ◽  
Francisco Klebson Gomes dos Santos ◽  
Ricardo Henrique de Lima Leite ◽  
Edna Maria Mendes Aroucha ◽  
Jussier Oliveira Vitoriano ◽  
...  
Keyword(s):  
Water Vapor ◽  
Ion Exchange ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Bentonite Clay ◽  
Gelatin Film ◽  
Vapor Permeability ◽  
Gelatin Matrix ◽  
Natural Form ◽  
Before And After

Bentonite clay was initially treated with a quaternary ammonium salt to increase its hydrophobicity, and then was dispersed in a gelatin matrix to serve as barrier to water vapor. The clays were characterized by IR spectroscopy in the infrared (FTIR), and X-ray diffraction (XRD), before and after ion exchange. The ion exchange held in the clay provokes on gelatin film a reduction of 65% in the water vapor permeability (WVP); a decrease in solubility of 55%; an increase of 35º in drop contact angle of water on the surface of the film; and 30% of raise in opacity.

Synthesis and Application of a Novel Modified Polysiloxane Polymer with High Reaction Activity as Water Repellent Agent for Cotton Fabrics

2015 ◽  
Vol 10 (2) ◽  
pp. 155892501501000
Author(s):  
Chaohong Dong ◽  
Zhou Lu ◽  
Ping Zhu ◽  
Lei Wang ◽  
Fengjun Zhang
Keyword(s):  
Cotton Fabric ◽  
Water Vapor Permeability ◽  
Water Repellency ◽  
Catalytic Amount ◽  
Cotton Fabrics ◽  
Water Repellent ◽  
Vapor Permeability ◽  
Untreated Cotton ◽  
High Reaction ◽  
Before And After

A novel poly(4-iodobutoxylmethylsiloxane) (PIBMS) water repellent with high reaction activity was synthesized using poly(hydromethylsiloxane) (PHMS), methyl iodide (MeI) and tetrahydrofuran (THF) in the presence of a catalytic amount of PdCl2. The new chemical active group of PIBMS could covalently bond to the cotton fabric. It is conducive to improve the washability of treated cotton fabric. The structure of PIBMS was confirmed by the FT-IR and 1H NMR spectra. The PIBMS was applied onto cotton fabric by a pad-dry-cure process. PIBMS was applied to cotton fabrics and the effect of the process parameters on water repellent performance was studied. The morphology of PIBMS polymer film on the cotton fabric was investigated by SEM. The water repellency of treated cotton fabrics before and after vigorous washes was compared. The results show that the water repellent grade of cotton fabric treated with PIBMS was 90. The contact angle of the treated cotton fabric was 136.94°, which was higher than that of the untreated cotton fabric. The water repellent grade of treated cotton fabric was still as high as 80 after 20 times washing. The tear strength and the tensile strength of cotton fabric significantly increased after PIBMS treatment. The air permeability and the water vapor permeability of treated cotton fabric were slightly lower than those of untreated cotton fabrics.

scholarly journals Investigating the effects of wicking and antibacterial finishing treatments on some comfort characteristics of Meryl skinlife for seamless activewear/sportswear

2019 ◽  
Vol 14 ◽  
pp. 155892501985279 ◽  
Author(s):  
İkilem Gocek ◽  
Sena Cimilli Duru
Keyword(s):  
Textile Industry ◽  
Fiber Type ◽  
Water Vapor Permeability ◽  
Point Of View ◽  
Dominant Factor ◽  
Vapor Permeability ◽  
Analytic Hierarchy ◽  
Fabric Structure ◽  
Vertical Wicking ◽  
Polyamide Fibers

Antibacterial efficacy and wearing comfort have recently become particular concerns in the activewear and sportswear market for consumers. Meryl skinlife, which is an antibacterial polyamide fiber due to the silver particles in its content, has been increasingly used in the textile industry, and it is mostly preferred for seamless garments that are especially used for activewear and sportswear. From this point of view, in this study fabrics made of Meryl skinlife fibers were investigated in terms of some water-related comfort properties by comparing their performance with that of their counterparts made of conventional polyamide fibers. Also, the effects of Lycra incorporation into the fabric structure and fiber type as well as antibacterial finishing treatments were examined on the wicking ability and comfort performance of the fabric samples. The vertical wicking capacity, transfer wicking, drying rate, and water vapor permeability tests were conducted on the fabric samples and the results of these tests were statistically analyzed using the Minitab and SPSS statistical package programs. The results showed that Lycra incorporation into the fabric structure was found to be the dominant factor for all of the investigated water-related comfort tests except for transfer wicking, while application of the finishing treatments was found to be the dominant factor for all of the investigated comfort-related tests. However, the fiber type was found influential on none of the comfort-related tests conducted in this study. Finally, the hybrid analytic hierarchy process-TOPSIS method was used to determine the best fabric alternative for activewear and sportswear, and it was found that SLN fabrics were the best choice.

scholarly journals Bio-Based Active Packaging: Carrageenan Film with Olive Leaf Extract for Lamb Meat Preservation

Foods ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1759
Author(s):  
Thamiris Renata Martiny ◽  
Vijaya Raghavan ◽  
Caroline Costa de Moraes ◽  
Gabriela Silveira da Rosa ◽  
Guilherme Luiz Dotto
Keyword(s):  
Leaf Extract ◽  
Water Vapor Permeability ◽  
Color Difference ◽  
Active Packaging ◽  
Vapor Permeability ◽  
Olive Leaf ◽  
Olive Leaf Extract ◽  
Lamb Meat ◽  
Oxidative Processes ◽  
Meat Packaging

Carrageenan-based active packaging film was prepared by adding olive leaf extract (OLE) as a bioactive agent to the lamb meat packaging. The OLE was characterized in terms of its phenolic compounds (T.ph), antioxidant activity (AA), oleuropein, and minimum inhibitory concentration (MIC) against Escherichia coli. The film’s formulation consisted of carrageenan, glycerol as a plasticizer, water as a solvent, and OLE. The effects of the OLE on the thickness, water vapor permeability (WVP), tensile strength (TS), elongation at break (EB), elastic modulus (EM), color, solubility, and antimicrobial capacity of the carrageenan film were determined. The OLE had the following excellent characteristics: the T.ph value was 115.96 mgGAE∙g−1 (d.b), the AA was 89.52%, the oleuropein value was 11.59 mg∙g−1, and the MIC was 50 mg∙mL−1. The results showed that the addition of OLE increased the thickness, EB, and WVP, and decreased the TS and EM of the film. The solubility was not significantly affected by the OLE. The color difference with the addition of OLE was 64.72%, which had the benefit of being a barrier to oxidative processes related to light. The film with the OLE was shown to have an antimicrobial capacity during the storage of lamb meat, reducing the count of psychrophiles five-fold when compared to the samples packed by the control and commercial films; therefore, this novel film has the potential to increase the shelf life of lamb meat, and as such, is suitable for use as active packaging.

scholarly journals A Research on Polyamide6.6/Polyurethane Blends in Finishing Process Which Are Used for Sportswear

2021 ◽  
Author(s):  
Meliha Oktav Bulut ◽  
Ayşen Cire
Keyword(s):  
Water Vapor ◽  
Photoelectron Spectroscopy ◽  
Aluminum Sulfate ◽  
Water Vapor Permeability ◽  
Color Difference ◽  
Air Permeability ◽  
Environmental Study ◽  
Vapor Permeability ◽  
Finishing Process ◽  
Potassium Aluminum Sulfate

In this work, softeners obtained from various companies were applied to the polyamide6.6/polyurethane fabrics which are used in sportswear industry using impregnation and exhaustion methods; water vapor permeability were determined for humidity control, air permeability and capillarity tests of these fabrics were studied. In addition, the wool hydrolysate obtained from the waste wool was also applied to these fabrics by using exhaustion method and the fabric properties were compared. In order to investigate the washing resistance of the process, experiments were performed with 1% and 3% potassium aluminum sulfate KAl(SO₄)2 and aluminum sulfate Al2(SO4) under the same conditions. The chemical and morphological surface properties of the fabrics were examined by using X-ray photoelectron spectroscopy (XPS). It was observed that the capillarity, water vapor and air permeability, and handle values of fabrics treated with wool hydrolysate were better and more resistant to consecutive washings than the fabrics treated with commercial recipes. Furthermore, this process did not have a side effect on the color difference and whiteness values of the fabrics treated with wool hydrolysate. Thus, an example of sustainable, economical and environmental study was done.

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