Korhan Sen’s research while affiliated with Dokuz Eylül University and other places

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Publications (7)


INVESTIGATION OF STRUCTURAL AND PERFORMANCE PROPERTIES OF HEMP-CONTAINING KNITTED FABRICS WITH DIFFERENT COMPOSITIONS
  • Article

January 2023

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20 Reads

Fibres and Textiles

KORHAN SEN

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GOKSU KANIK

The growing relevance of sustainable materials has increased the importance of hemp-containing products obtained from natural fibers. When the raw materials used in the garment industry are examined, it is observed that the market share of hemp-containing fibers is low in percentage. Researching the production techniques and methods of fabrics to be obtained from hemp fiber and adapting them to the use of clothing will contribute significantly to the development of the hemp product range. It is aimed that these fabrics to be developed will pass tests in accordance with end-consumer standards. In this study, structural and performance properties of hemp fiber were examined and alternatives were produced instead of conventional methods for a sustainable world. In line with the sustainability strategy, there are advantages of hemp fibers in terms of water consumption, environmental impact compared to cotton fiber. Within the scope, studies were carried out to develop single jersey knitted fabrics by hemp- containing at different compositions such as 70 % cotton/ 30 %hemp, 80 % cotton/ 20 %hemp and 90 % cotton/ 10 %hemp, %100 cotton fabric having the similar structural properties was taken as a control sample. As a result, prototype tests were performed considering the structural and performance properties of the developed fabrics.


Fastness to washing and water results
Fastness to perspiration results of fabrics
Fastness to rubbing results
Dimensional stability results of fabrics
Investigation on the Fastness and Dimensional Stability of the Knitted Fabrics Made of the New Generation Regenerated Cellulose Fibers
  • Article
  • Full-text available

December 2022

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109 Reads

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1 Citation

The European Journal of Research and Development

The purpose of this research is to examine fastness and dimensional stability of the knitted fabrics made of three types of new generation regenerated cellulose fibres such as Naia™ Renew, Tencel™ Lyocell and Ecocell™. The perspiration, washing, water and rubbing fastness tests and also dimensional stability determination were performed. The data was compared with the ones of the cotton fabric. The goal of this study is comparing whether recently developed new generation regenerated cellulose fibers compared to cotton, presents better performance considering customer perceptions. Accordingly, the acidic and basic perspiration (TS EN ISO 105–E04), washing (TS EN ISO 105–C06), water (TS EN ISO 105–E01) and rubbing fastness (TS EN ISO 105–X12) tests and also dimensional stability (TS EN ISO 3759) determination was performed in this concept.

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Life cycle scenarios for short sleeve 100% cotton and 50% cotton/ 50% PET T-shirts.
The contributions (%) to each impact category for 100% cotton T-shirt, scenario I and II
The percent contributions to each impact category for 100% cotton and 100% cotton (reprocess) T-shirt including different manufacturing steps (P1, P2 and reprocess)
The percent contributions to each impact category for 50% cotton/50% polyester and 50% cotton/50% polyester (reprocess) T-shirt including different manufacturing steps (P1, P2 and reprocess)
Effect of Reprocess on the Sustainability of T-Shirt Production

June 2022

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249 Reads

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1 Citation

Tekstil ve Mühendis

Additional processing steps in textile manufacturing such as reprocess in finishing department have severe unforeseen effects on sustainability. Here, we present a Life Cycle Assessment cradle-to-gate analysis of 100% cotton and 50% cotton/50% polyester T-shirts with and without reprocess. In the assessment, the functional unit is Medium (M) size short-sleeve polo necked Tshirt. Results showed that water footprint of fibre production, the global warming and abiotic depletion potential of the manufacturing step are the major factors that increase the environmental impacts. In 100% cotton T-shirt manufacturing, removing reprocess decreased the acidification, eutrophication potential, and water scarcity footprint. In the raw material (chemicals) step of cotton/polyester T-shirt production, the reprocess significantly increased the ozone layer depletion and abiotic depletion potential. Results suggest that reducing/eliminating reprocess in finishing department could decrease the environmental impact of apparel production by minimizing the use of chemicals, water, and energy


Figure 1: Diagrammatic illustration of body temperature in the human body
Figure 2: Activewear design of fabrics with different properties
Properties of TYH fabrics
Physical Tests of the fabrics and results
Performance tests of the fabrics and results
Developing Comfort Enhancing of Knitted Sportswear Collection by Synthetic Fibers with Different Properties

This study demonstrates our effort in examining to improve the performance of activewear and provide subjective comfort in activewear. Functional properties such as elasticity, cool keeping, breathability, quick drying etc. in activewear products increase the comfort performance characteristics of the garments. The paper focus on the textile materials and product which is designed specially by company for activewear. Comfort properties of fabrics such as capable of breathing, quick dry, flexible etc. were reproduced. The fibres, yarns, fabrics and special finishing treatments used for activewear in order to enhance performance and properties of activewear were discussed. In addition, it was explained where the fabric is used, and which performance characteristics are important for designing the product. Within the scope of the study, the development of an alternative comfort enhancing knitted activewear collection with different synthetic fibres was examined. The results of the literature studies have shown that there are various parameters to ensure comfort. Moreover, design studies were made with fabric at different stages in this study. As a result, prototype tests were made considering the physical and chemical properties of the developed fabrics. These studies formed the basis for the development of raw materials. The use of these products in the prototypes of recycled pet yarns collected from the sea shows the contribution of this study in terms of sustainability.


Prevention of biofouling on aquaculture nets with eco‐friendly antifouling paint formulation

January 2020

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257 Reads

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11 Citations

Review of Progress in Coloration and Related Topics

Aquaculture, which is an important part of food supply, is usually carried out in cage nets made of textile materials. Fouling organisms settle on the cage nets over time, close the mesh openings, and cause unwanted weight gain. In order to prevent fouling, aquaculture nets are generally treated with antifouling paints. In this paper, warp knitted cage nets made from various raw materials were treated with three different antifouling paints. Econea was used as a biocide to prepare an eco‐friendly antifouling paint formulation, and two copper‐based commercial antifouling paints were supplied for comparison. Antifouling paint‐treated and untreated net samples were immersed in a marine ecosystem next to an aquaculture zone for 6 months. Settlement of fouling organisms on nets was observed by taking underwater photographs at periodic intervals. Following the field study, changes in the structure of the nets and antifouling performance of the paints were evaluated considering the results of underwater photographs, biomass growth, variation in mass and strength tests. Colour fastness of the antifouling paints to sea water was also measured to learn about biocide release and surface hydrophobicity. The results show that copper‐free eco‐friendly antifouling paint is just as effective against the fouling mechanism for all types of nets as copper‐based commercial antifouling paints. The novel eco‐friendly formulation has promising results, which provides an alternative for producers when considering the selection of raw materials.


Kompozit Malzeme Üretiminde Kullanılacak Bitkisel Liflerin Alkali Modifikasyonu Sonrası Morfolojik ve Kimyasal Yapılarındaki Değişimin İncelenmesi

December 2017

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441 Reads

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4 Citations

Tekstil ve Mühendis

Cellulose-based materials such as vegetable fibers draw attention to be utilizable as filler or reinforcement material particularly for polymers due to their ecologically friendly structure, low-density and sustainability. The studies which are performed in order to enhance the usability of cellulose-based fibers as reinforcement materials become essential. In this study, commonly used vegetable fibers for composite material production such as flax, hemp, coir, sisal, banana and jute fibers were treated with alkali, then chemical composition of the fibers were tested and structural properties of the fibers were analyzed by the fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and fluorescence microscopy. In case of the analysis results, it is determined that alkali modification reduced the content of the non-cellulosic components, changed the fluorescence color of the fibers regarding to the change in fiber chemical composition and also roughened the fiber surface by creating cleaning effect on the fiber surface.

Citations (3)


... 5 Consisting of 40% confirmed recycled waste plastics and 60% wood pulp from sustainably managed forests, Naia™ Renew adds worth to waste and materials. 6 Regenerated cellulose fibers are used in the production of denim fabrics for the development of comfort. For this purpose, regenerated cellulose, modal, Tencel, and bamboo yarns were used in the weft direction. ...

Reference:

Thermophysiological comfort and objective hand properties of modal, Naia™, cashmere and cotton included denim fabrics
Investigation on the Fastness and Dimensional Stability of the Knitted Fabrics Made of the New Generation Regenerated Cellulose Fibers

The European Journal of Research and Development

... The most common antifouling coatings applied to aquaculture netting materials use cuprous oxide as the active ingredient or zinc-based biocides. Recently, coatings based on biocides such as Tralopyril are taking up more market share, reporting performances that may rival copper under certain environmental conditions (Sen et al., 2020;Bloecher and Floerl, 2020). Although deemed more environmentally benign, lack of knowledge on potential effects on non-target organisms warrants caution (Oliveira et al., 2016;Grefsrud et al, 2022). ...

Prevention of biofouling on aquaculture nets with eco‐friendly antifouling paint formulation
  • Citing Article
  • January 2020

Review of Progress in Coloration and Related Topics

... Kenevir liflerinden elde edilen kumaşların, ev tekstil ve mobilya sektöründe geniş bir kullanım alanı vardır ( Seki, Y., Selli, F., Şen, K., Erdoğan, Ü.H. 2017). ...

Kompozit Malzeme Üretiminde Kullanılacak Bitkisel Liflerin Alkali Modifikasyonu Sonrası Morfolojik ve Kimyasal Yapılarındaki Değişimin İncelenmesi

Tekstil ve Mühendis