Poliester (PET) lifleri tekstil endüstrisinde dünya genelinde en çok kullanılan sentetik liftir. Dünya genelinde çevresel ve ekolojik kaygıların artmasıyla sentetik liflerin geri dönüştürülmesi, ...biyobozunurluğunun sağlanması yönünde çalışmalar yapılmaktadır. Bu deneysel çalışmada poliester, geri dönüştürülmüş poliester (r-PET) ve biyobozunur poliester (bio-PET) içerikli kumaşların boyama ve fiziksel performansları karşılaştırılmıştır. Elde edilen sonuçlarda r-PET ve bio-PET içerikli numunelerin en az PET içerikli kumaşlar kadar iyi boyandığı haslık ve mukavemet değerlerinde belirgin farklılıklar olmadığı tespit edilmiştir. Bu kapsamda r-PET ve bio-PET liflerinin PET liflerine alternatif olabileceği düşünülmektedir.
Polyester (PET) fibers are the most widely used synthetic fiber in the textile industry worldwide. With the increasing environmental and ecological concerns around the world, efforts are being made to recycle synthetic fibers and to ensure their biodegradability. In this experimental study, the dyeing and physical performances of polyester, recycled polyester (r-PET) and biodegradable polyester (bio-PET) fabrics were compared. In the results obtained, it was determined that the samples containing r-PET and bio-PET were dyed at least as well as the fabrics containing PET, and there were no significant differences in fastness and strength values. In this context, it is thought that r-PET and bio-PET fibers can be alternatives to PET fibers.
Teknik marbling merupakan salah satu teknik pewarnaan yang memiliki potensi pengembangan yang sangat besar karena belum popular di masyarakat. Teknik marbling yang digunakan adalah suminagashi. ...Penelitian ini bertujuan untuk mengetahui kualitas motif marbling dan ketahanan luntur warna terhadap pencucian pada jenis kain poliester satin, campuran poliester dan crepe. Penelitian ini merupakan penelitian eksperimen. Objek penelitian ini adalah jenis kain, zat warna dan pengental CMC. Pengujian kualitas motif marbling dan ketahanan luntur warna menggunakan uji organoleptik. Hasil analisis deskriptif menunjukkan bahwa kualitas motif marbling dengan kriteria baik adalah kain crepe. Ketiga jenis kain memiliki ketahanan luntur warna dengan kriteria baik. Simpulan dari penelitian ini adalah pewarnaan suminagashi memiliki kualitas motif marbling baik sampai sangat baik, ketahan luntur warna yang dihasilkan baik pada semua jenis kain. Saran dalam penelitian ini adalah mencetak motif marbling pada permukaan kain diperlukan ketelitian agar motif yang dibentuk tidak berubah.
Abstrak – Pencapan rintang metode khelasi logam (metal chelation) pada kain poliester menggunakan zat warna dispersi jenis antrakinon sebagai warna dasarnya, karena zat warna tersebut tidak tahan ...terhadap logam-logam transisi contohnya logam tembaga yang diperoleh dari senyawa kuprisulfat. Untuk warna motifnya digunakan zat warna dispersi jenis azo karena zat warna azo tahan terhadap logam-logam transisi. Senyawa kuprisulfat berfungsi menghalangi terfiksasinya zat warna pada serat yang ditambahkan pada pasta warna motifnya, sehingga perlu dilakukan optimasi pemakaiannya dengan variasi konsentrasi dan waktu fiksasi pengukusan, pada proses pencapan rintang metode khelasi logam (metal chelation) kemudian dilakukan pengujian terhadap derajat putih kain, beda warna, dan sifat fisik kain poliester. Keadaan terbaik dicapai pada konsentrasi kuprisulfat 35 g/kg pasta dan waktu fiksasi 180 derajar Celcius 6 menit dengan nilai derajat putih kain Delta K/S 0,0092, nilai beda warna Delta E= 1,09, kekuatan tarik kain dengan nilai 22,80 kg kearah lusi 19,50 kg kearah pakan, tahan luntur warna terhadap pencucian dan gosokan dengan nilai 4- 5.
Abstract – Resist printing the metal chelation method on a polyester fabric uses an antrakinon dispersion dyes as its base color, because the dye is not resistant to transition metals, for example copper metal obtained from copper compound. Azo dispersion dyes are used for motif color because they are resistant to transition metals. Kuprisulfate compound functions to prevent the fixation of dyes in the fiber added to the color paste of the motif, so it is necessary to optimize its use with variations in concentration and time of streaming fixation in the metal chelation method, then testing the degree of white fabric, different colors, fabric tensile strength and color fastness to washing and rubbing. Optimum conditions were achieved at a concentration of kuprisulfate 35 g/kg paste and a fixation time of 180 Degrees Celcius for 6 minutes with a white degree of fabric Delta K/S 0.0092, color difference value Delta E= 1.09, fabric tensile strength with a value of 22.80 kg towards the warp 19.50 kg towards the feed, fastness to washing and rubbing with a value of 4- 5.
Bu çalışmada, %30 cam elyaf (CE) katkılı poli-eter-eter-keton (PEEK) polimerinin termoset poliester kompozit ve AISI 316L paslanmaz çelik diske karşı kuru ortam şartları altında sürtünme ve aşınma ...özellikleri incelenmiştir. Sürtünme ve aşınma çalışmaları pim-disk aşınma test cihazı ile gerçekleştirilmiştir. Aşınma ve sürtünme testleri 0.5m/s kayma hızında ve 20, 40 ve 60N yük altında yapılmıştır. Çalışma sonucunda, her iki disk için uygulanan yükün artması ile PEEK/30CE kompozitin sürtünme katsayısı ve aşınma oranı artmıştır. En düşük sürtünme katsayısı ve aşınma oranı, sırasıyla 0.24 ve 3.31x10-15 m2/N değerleri ile 20N yük altında AISI 316L paslanmaz çelik disk kullanıldığında elde edilmiştir.
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•Poly(butylene succinate-ran-ε-caprolactone) copolyesters were obtained by enzymatic ROP.•Cyclic butylene succinate oligomers and ε-caprolactone were used as feed monomers.•These ...random copolymers are semi-crystalline over the entire range of compositions.•Crystallization studies by DSC, PLOM and WAXS showed that these copolymers are isodimorphic.•They display a pseudo-eutectic region with double crystalline phases.
In this paper, the preparation of PBS-ran-PCL copolyesters by enzymatic ring opening polymerization is presented for the first time. The copolyesters were produced in a wide composition range and free of metallic contaminants, so they may be regarded as potential biomaterials. The copolymers have been characterized by proton and carbon nuclear magnetic resonance (1H and 13C NMR), gel permeation chromatography (GPC), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), polarized light optical microscopy (PLOM) and wide angle X-ray scattering (WAXS). The PBS-ran-PCL copolyesters were able to crystallize in the entire composition range and displayed a pseudo-eutectic region. Most copolymers away from the pseudo-eutectic region exhibited a single crystalline phase (PBS-rich or PCL-rich crystalline phase), while within the pseudo-eutectic region the copolymers were double crystalline. Observations by PLOM, during isothermal crystallization showed that both nucleation density and spherulitic growth rate of the copolyesters are determined by the component that constitutes the majority phase. WAXS studies revealed that d spacings of selected crystallographic planes depend on composition. Therefore, both DSC and WAXS results suggest that the copolymers are probably isodimorphic, as the PBS-rich crystalline phase may contain small inclusions of PCL co-units, while the PCL-rich crystalline domains may also contain a minor quantity of PBS co-units inside.
Su hem yaşam için hem de sahip olduğu özellikleri nedeniyle de değerli bir kaynaktır. Bu nedenle, su kıtlığı ve artan çevre bilinci dünya çapında endişeye sebep olmaktadır. Tekstil sektörü genel ...olarak su tüketiminin yoğun olduğu proseslerden oluşmaktadır. Özellikle boyama işleminde çok fazla su kullanılmaktadır. Bu sebeple su kullanımının azalmasına yönelik boyama çalışmaların her geçen gün öneminin artacağı görülmektedir. Bu çalışmada, süperkritik karbondioksit (scCO2) ortamda susuz ve klasik sulu ortamda bir adet % 100 poliester dokuma kumaş açık ve koyu tonda olmak üzere boyanmış, boyama proseslerinin aşamaları her iki ortam için de yaşam döngüsü analizi (LCA) yöntemi ile değerlendirilmiştir. Analiz için SimaPro 9.3 programı kullanılmış ve yapılan karşılaştırma kümülatif olarak süperkritik ortamda yapılan boyamada çevresel etkinin klasik sulu ortamda boyamayla karşılaştırıldığında göre daha az olduğu dolayısıyla daha avantajlı olduğu sonucuna varılmıştır.
Water is a valuable resource both for life and because of its properties. Therefore, water scarcity and increasing environmental awareness cause worldwide concern. The textile industry generally consists of processes with intense water consumption. Especially in the dyeing process, a lot of water is used. For this reason, the importance of dyeing studies aimed at reducing water use that increases day by day. In this study, one %100 polyester woven fabrics were dyed in dark and light shade in supercritical carbon dioxide (scCO2) media (waterless) and classic media (aqueous) and the dyeing process was evaluated by life cycle analysis (LCA) method in both media. SimaPro 9.3 program was used for the analysis and it was concluded that the environmental effect of dyeing cumulatively performed in the supercritical medium is less compared to dyeing in a classical aqueous medium, thus it is more advantageous.
Abstrak Penyebaran panas (thermal) dan kelembaban/ uap air melalui pakaian melibatkan proses penguapan, kondensasi, penyerapan, dan desorpsi. Pakaian bertindak sebagai penghalang yang menghambat ...penguapan sehingga pakaian yang memiliki kemampuan penguapan yang baik akan menguntungkan pada saat melakukan berolahraga. Tujuan dari penelitian ini adalah mengetahui respon fisiologi dan psikologi manusia pada saat berolahraga di lingkungan panas. Penelitian dilakukan pada 4 orang laki-laki dengan memakai dua jenis pakaian dengan bahan berbeda, yakni: katun dan poliester pada kondisi temperatur di lingkungan 30°C. Mereka berolahraga menggunakan treadmill dengan kecepatan 7 km/ jam untuk setiap jenis pakaian selama 30 menit, dimana setiap 10 menit melakukan treadmill kemudian istirahat selama 5 menit. Setelah itu, dilakukan proses recovery selama 30 menit sebanyak dua kali. Hasil penelitian menunjukan bahwa kemampuan absorbsi keringat pada saat exercise pada bahan pakaian katun lebih tinggi dibandingkan bahan poliester, sedangkan kemampuan evaporasi keringat ketika proses recovery, bahan pakaian poliester lebih baik dibandingkan katun, sehingga pada saat ini berolahraga, bahan poliester cenderung lebih kering dibandingkan bahan pakaian katun. Untuk respon psikologi, pada saat responden berolahraga menggunakan bahan pakaian katun, mereka merasakan badan lebih terasa panas, basah dan sangat berkeringat. Abstract Thermal and humidity can be transfered using evaporation, condensation and absorption process. Clothing as a mediator to evaporation process. There are many kinds of clothing which can help to evaporating the thermal, especially while exercise. The purpose of this research is to know the Psychological and Physiological responds of human while exercise in hot environment. This research is conducted to four man who using two different kinds of clothing, which are cotton and polyester. The condition of hot environment is 30°C. They are doing exercise using treadmill with speed 7 km/hour for every kind of cloth during 30 minutes; where every 10 minutes is exercise then 5 minutes is break. After that, recovery process is 30 minutes in two times. The result of this research is shown that the ability of sweat absorbtion when exercise using cotton is higher than polyester, and the ability of sweat evaporation when recovery using polyester is more drying rather than using cotton. Polyester is better than cotton when it was used in exercise, because of polyester is easier to be dried. In Psychologycal respond, the respondences said that when using cotton while exercise, they feel the body is more warm, wet and vigorously sweating. Keywords: Pshycological, Phisiological, Cotton, Polyester, Treadmill
The dimethyl ester of 2,3:4,5-di-O-methylene-galactaric acid (Galx) was made to react in the melt with 1,n-alkanediols HO(CH2) n OH containing even numbers of methylenes (n from 6 to 12) to produce ...linear polycyclic polyesters. Two sets of poly(alkylene 2,3:4,5-di-O-methylene-galactarate) polyesters (PE-nGalx) with weight-average molecular weights in the ∼5000–10000 and ∼35000–45000 ranges were obtained using TBT and DBTO catalysts, respectively. For comparative purposes a set of poly(alkylene adipate) polyesters (PE-nAd) was also synthesized with molecular weights in the higher range using a similar procedure. The thermal stability of PE-nGalx was greater than that of PE-nAd although it notably decayed as molecular weight decreased. The replacement of Ad by Galx in the polyesters caused increases in T g of up to 70 °C, and almost doubled the tensile mechanical parameters. All PE-nGalx were semicrystalline but only those made from 1,12-dodecanediol were able to crystallize from the melt with a crystallization rate that diminished as the molecular weight increased. In general, the galactarate containing polyesters displayed higher solubility and wettability than polyadipates, they hydrolyzed faster and exhibited comparable sensitivity to the action of lipases.
Hastalıklardan korunmada tekstil ürünlerin büyük rolü bulunmaktadır. Tekstil materyaller günlük hayatın birçok yerinde karşımıza çıkmaktadır. Özellikle son iki yıldır yaşanan covid-19 pandemisi ...tekstilin önemine daha da dikkat çekmiştir. Bununla birlikte “tekstil bizi salgınlardan koruyabilir mi?” sorusunu da gündeme getirmiştir. Bakterilerle dolu bir çevremiz olması, virüslerin bakterilere tutunarak saçılması ve nozokomiyal hastalıkların son yıllarda artış göstermesi, antimikrobiyal tekstil üretimine gereksinim olduğunu düşündürmektedir. Bu çalışmada farklı yapıdaki kumaşlara gümüş ve kuarterner amonyum tuz (QAS) apre uygulanması ve antimikrobiyal etkinliklerinin karşılaştırılması amaçlanmıştır. Kumaşlardan birisi %100 pamuk liflerden diğeri ise %100 poliester liflerden dokunmuştur. Uygulanan antimikrobiyal bitim işlemleri sonrası etkinlikleri AATCC 100 test metoduna göre belirlenmiştir. Kontrol olarak apre uygulanmamış kumaşlar aynı teste tabi tutulmuştur; ancak herhangi bir mikrobiyal inhibisyona rastlanmamıştır. Buna göre tüm gümüş apreli pamuk kumaşlarda etkinin diğerlerine oranla daha yüksek olduğu tespit edilmiştir. En yüksek inhibisyon oranı %99,03 ±0,49 olarak gümüş apreli pamuk kumaşta tespit edilmiştir. En düşük inhibisyon oranı ise QAS apreli poliester kumaşta %59,43 ±1,87 olarak bulunmuştur. Ayrıca kumaşların gram pozitif bakterilere karşı daha etkin olduğu görülmüştür. Aynı zamanda uygulanan apre işleminin kumaşlarda renk değişimi, pilling (boncuklanma) ve hidrofiliteye neden olup olmadığı da test edilmiş ve herhangi bir etki olmadığı görülmüştür. Sonuç olarak bu çalışmada farklı yapıdaki kumaşlara uygulanan antimikrobiyal bitim işlemlerinin yüksek etkinlik gösterdiği görülmüştür. Çeşitli enfeksiyon hastalıklarındaki eradikasyon çalışmalarında, günümüz pandemisi ve hastane enfeksiyonları ile mücadelede antimikrobiyal tekstil sektörünün oldukça büyük bir yere sahip olduğu ve geliştirilmesi gerektiği düşünülmektedir.
This work focused on the evaluation of the kinetics of dyeing polyester fabrics with high molecular weight disperse dyes, at low temperature by solvent microemulsion. This study also compared the ...effect of two non-toxic agro-sourced auxiliaries (
-vanillin and coumarin) using a non-toxic organic solvent. A dyeing bath consisting of a micro-emulsion system involving a small proportion of
-butyl acetate was used, and the kinetics of dyeing were analysed at four temperatures (83, 90, 95 and 100 °C). Moreover, the dyeing rate constants, correlation coefficient and activation energies were proposed for this system. It was found that
-vanillin yielded higher dye absorption levels than coumarin, leading to exhaustions of 88% and 87% for Disperse Red 167 and Disperse Blue 79, respectively.
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values of dyed polyester were also found to be higher for dye baths containing
-vanillin with respect to the ones with coumarin. In terms of hot pressing fastness and wash fastness, generally no adverse influence on fastness properties was reported, while
-vanillin showed slightly better results compared to coumarin.
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