INVESTIGATION OF THE BULK, SURFACE AND TRANSFER PROPERTIES OF CHLORINE BLEACHED DENIM APPAREL AT DIFFERENT CONDITION

Oxidizing bleaching agent (calcium hypochlorite or bleaching powder) is widely used in the apparel washing plant as a color removing and cost effective finishing chemical. As the faded denim or old look denim is preferred by the today’s youth it has become a crucial issue for the technologists to modify denim apparel to fulfill the demand of existing trend. Calcium hypochlorite (Ca(OCl)Cl) fades the denim effectively but a significant changes are happened in the properties of the denim apparel. The main objective of this paper was to investigate the changes of bulk, surface and transfer properties of denim apparel after the chlorine bleach action at varying length of washing time (10,15 and 30 min) with fixed concentration and temperature (50°C). These properties are related to the performance of the end product. 100% cotton indigo dyed 2/1 twill denim apparel was treated with 5gm/l (Ca(OCl)Cl). To determine the end use performance of the modified denim the changes of tensile strength, stiffness, dimensional stability (bulk properties), hand roughness, rubbing fastness (surface properties), air permeability, water repellency (transfer properties) of the modified denim apparel were evaluated. It has been monitored from the experimental data that the bulk properties play down but the surface properties have a noticeable improvement after the chlorine bleach action. It is also noticed that washing time has a significant effect on air permeability of the treated denim apparel

INVESTIGATION OF THE BULK, SURFACE AND TRANSFER PROPERTIES OF CHLORINE BLEACHED DENIM APPAREL AT DIFFERENT CONDITION

Oxidizing bleaching agent (calcium hypochlorite or bleaching powder) is widely used in the apparel washing plant as a color removing and cost effective finishing chemical. As the faded denim or old look denim is preferred by the today’s youth it has become a crucial issue for the technologists to modify denim apparel to fulfill the demand of existing trend. Calcium hypochlorite (Ca(OCl)Cl) fades the denim effectively but a significant changes are happened in the properties of the denim apparel. The main objective of this paper was to investigate the changes of bulk, surface and transfer properties of denim apparel after the chlorine bleach action at varying length of washing time (10,15 and 30 min) with fixed concentration and temperature (50°C). These properties are related to the performance of the end product. 100% cotton indigo dyed 2/1 twill denim apparel was treated with 5gm/l (Ca(OCl)Cl). To determine the end use performance of the modified denim the changes of tensile strength, stiffness, dimensional stability (bulk properties), hand roughness, rubbing fastness (surface properties), air permeability, water repellency (transfer properties) of the modified denim apparel were evaluated. It has been monitored from the experimental data that the bulk properties play down but the surface properties have a noticeable improvement after the chlorine bleach action. It is also noticed that washing time has a significant effect on air permeability of the treated denim apparel

Materials and manufacturing environmental sustainability evaluation of apparel product: knitted T-shirt case study

In this paper, evaluation of base materials and manufacturing environmental sustainability of selected branded T-shirt products made by Bangladesh is presented. The study is based on performing various eco-friendliness tests for the product base materials and evaluation though a standard tool named Higg Index. For this study, selected apparel branded T-shirt products from renowned brand, namely B, C, D, E, and F, and a researcher-developed BUTex-Innovation brand A are taken into consideration. Better environmental sustainability results, i.e., higher score, is obtained by A, B, C, and D branded T-shirts, but local branded product of E and F resulted in poor environmental sustainability with lower scores in terms of product eco-friendliness tests and High Index assessment tool. Besides, many weaknesses and opportunities for improvement of environmental sustainability in materials and manufacturing stages are identified and suggested to lead the textiles and clothing sectors towards sustainable growth

Environmental Sustainability Evaluation of Apparel Product: A Case Study on Knitted T-Shirt

The work reported in this paper presents the assessment of environmental performances of selected branded apparel T-Shirt products made by Bangladesh. The study is based on a standard evaluation tool named Higg Index which is basically used widely to measure the environmental sustainability of various apparel products. Higg Index is an internal self-assessment tool created by the outdoor apparel industry and Nike’s apparel environmental design tool which aims to aggregate information on the environmental performance of products. The Index considers performance across the full life-cycle of a product, including impacts from “input materials, manufacturing, packaging, transportation, use, and end-of-life.” Selected apparel branded T-Shirt products from S. Oliver, BUTex-Innovation, PUMA, Esprit, Aarong, and Yellow were taken into consideration. The results indicate that newly developed ecofriendly T-shirt and foreign branded products named S. Oliver, PUMA, and Esprit gained higher score but local branded product like Aarong and Yellow gained lower score in terms of environmental sustainability based on Higg Index assessment tool. Moreover, many weaknesses and opportunities for improvement of both local and foreign branded T-Shirt products have been identified and suggested which would eventually lead the fashion designer, apparel manufacturer, stakeholder, and consumer towards greener apparel products

Chitosan incorporation for antibacterial property improvement of jute-cotton blended denim fabric

Jute-cotton blended denim is a new diversified product for the fashion and clothing sector. Chitosan was incorporated in this blend in order to improve its antimicrobial property. The incorporation of chitosan to the blended apparel was confirmed by Fourier transform infrared spectroscopy. Two microorganisms were used to create individual bacterial medium; one is the gram-positive Staphylococcus aureus and the other is the gram-negative Escherichia coli. Qualitative and quantitative assessments were carried out to evaluate antimicrobial property of chitosan, where the results appeared in favour of chitosan’s significant efficacy as an antimicrobial agent against both before-mentioned microorganisms. Because of low cost, easy application techniques and eco-friendly strategy; the success of this research will boost confidence of clothing product developers and manufacturers to use this blend as a fashionable fabric-material irrespective of climatic areas, gender or ages, that will vastly help to flourish massive scale business of major jute producing countries like Bangladesh and India

Barriers to male condom use in Rohingya refugee camps in Bangladesh: A qualitative study

Summary: Background: Rohingya people are often called the most persecuted minority in the world. Currently, almost 800,000 Rohingya refugees live in temporary shelters in Cox's Bazar, Bangladesh. More than one-quarter of them are women and girls of reproductive age who are at increased risk of unplanned pregnancies, unsafe abortions and related complications. However, the use of contraception remains inadequate, and particularly use of condoms and male participation is scarce. This study examines the barriers to condom use as a contraceptive method among married Rohingya couples. Methods: We conducted in-depth qualitative interviews of married Rohingya men and women and thematically analysed the data. Findings: Depo Provera injections and pills are the dominant forms of contraception. Men's participation in family planning and contraceptive use is rare, and so is the use of condoms. Participants identified several barriers to condom use, including contraception being the responsibility of the women, socio-cultural issues, the stigma attached to condoms, unfamiliarity with condoms, the limitations of condoms, and issues of security in conjugal life. Health workers do not promote condoms in the same way as other contraceptive methods. Interpretation: Condom use and men's participation in contraception use are rare in Rohingya camps. The involvement of family planning workers who are males may help to promote the use of condoms and increase the method-mix options of contraceptives. Funding: La Trobe University, Melbourne, Australia

Investigation on effluent characteristics of organic cotton fabric dyeing with eco-friendly remazol reactive dyes

Environmental sustainability is the major concern in the age of modern world. For textile and apparel sector, this has been a burning issue for many related concerned bodies. The pretreatment and dyeing process of greige fabrics results in large volume of effluents that has harmful effect on environment. In this\ud study, the ecological parameters of the effluents obtained from scouring and dyeing of 100% organic cotton single jersey knitted fabrics with environmentally low impact Remazol series reactive dyes adopting exhaust dyeing method was investigated. The effluents collected for investigating the ecological parameters include chemical oxygen demand (COD), biological oxygen demand (BOD), total dissolved solids (TDS), total suspended solids (TSS), dissolved oxygen (DO) and alkalinity. The results show that the use of the low impact reactive dyes has greater ecological advantages as it reduces the COD, BOD, TDS, TSS, p\ud H values and increases the DO values of effluents. Organic cotton itself being eco-friendly along with Remazol series\ud sustainable dyes provides the better ecological results. Hence, the results indicated that wet processing of organic cotton knitted fabric with eco-friendly and low impact reactive dyes provide better ecological advantages.\u

Investigation on Physical Properties of Organic Cotton T-Shirt by Bio-Scouring and Eco-Friendly Remazol Reactive Dyes Treatment

<p>Wet processing treatment plays an important role in the physico-mechanical properties of finished apparel products. This paper presents an investigated result of enzymatic scouring and eco-friendly remazol reactive dyes treatment on the physical properties of finished T-shirt product. 100 % organic cotton single jersey knitted grey fabric having 160 gsm was considered. To investigate the selected physical characteristics of the finished organic cotton T-shirt, the eco-friendly enzymatic scouring with Prima Green Eco scour, Prima Fast Gold RSL and remazol ultra RGBN series reactive dyed treatment were performed following standard recipe. Selected physical properties namely washing fastness, bursting strength, fabric drapability, color fastness to rubbing, perspiration and absorption have been investigated for the newly developed organic cotton T-shirt that showed better results in terms of quality. Hence, it can be concluded that by selecting eco-friendly materials like organic cotton and chemical processing treatment, it is possible to develop finished T-shirt products with improved physical properties</p

Investigation on Effluent Characteristics of Organic Cotton Fabric Dyeing With Eco-Friendly Remazol Reactive Dyes

<p>The textile industry is highly water intensive and one of the major contributor in environment pollution<br>especially water in Bangladesh. In general, the results show that the use of the low impact reactive dyes has<br>greater ecological advantages as it reduces the COD, BOD, TDS, TSS, and increase the DO and balanced pH<br>values of the effluent considerably. Further, the fabric made from organic cotton itself also reduces the COD,<br>BOD, TSS and TDS values. Besides, significantly increases the DO values maintaining tolerable pH values of<br>the effluents. Finally it can be concluded that if various verified eco-friendly dyes and chemicals are used<br>widely in wet processing, the environment pollution could be minimized to a greater extent.</p> <p> </p