Kimyasal ve Yüzey Modifikasyon İşlemlerinin Polyester Kumaşların Mekanik ve Kimyasal Özelliklerine Etkileri

Year 2018, Volume: 6 Issue: 4, 1344 - 1353, 01.08.2018

Zeynep Ömeroğulları Başyiğit

https://doi.org/10.29130/dubited.423516

Cited By: 4

Abstract

Polyester kumaşların alkali ortamda işlem görmesi kumaşların
yumuşak tutum, hidrofilik karakter kazanması, dökümlü bir kumaş haline gelmesi
gibi istenen özelliklere sahip olmasını sağlayan alışılmış bir uygulamadır.
Fakat yapılan bu kimyasal modifikasyon işleminin parametreleri optimize
edilmediğinde, polyester kumaşların mekanik mukavemetlerinde ciddi düşüşler
görülebilmektedir. Bu çalışmada, düşük sıcaklıkta yapılan (<50 ⁰C)  plazma aplikasyonu ile yüzey modifikasyon
işlemi; polyester kumaşların kimyasal modifikasyon işlemlerine bir alternatif
olarak kullanılmıştır ve her iki modifikasyon işleminin polyester kumaşların
mekanik ve kimyasal özelliklerine olan etkileri incelenmiştir. Süre ve
konsantrasyon gibi kimyasal modifikasyon işleminin parametreleri
çeşitlendirilirken, yüzey modifikasyon işleminde kumaşlar farklı plazma işlem
sürelerine tabi tutulmuştur. Her iki modifikasyondan sonra, polyester
kumaşların mekanik özellikleri, hidrofilite değerleri ve ağırlık kayıpları gibi
performans değerleri incelenmiş, taramalı elektron mikroskobu (SEM) görüntüleri
alınmıştır. Test sonuçlarına göre; kimyasal modifikasyondan sonra kumaşlarda
oluşan ağırlık kaybı plazma işlemi ile yapılan yüzey modifikasyonu işlemine
oranla daha fazla olmuştur. Bu çalışmada, özellikle yüksek konsantrasyonda
yapılan alkali işleme göre; polyester kumaşlara uygulanan yüzey modifikasyon
işleminin pek çok avantajı görülmüştür. Fonksiyonelleştirilmiş bu polyester
kumaşların üç boyutlu baskı uygulamalarında polimer aktarılmadan önce
alternatif bir platform olarak kullanılabileceği düşünülmüştür.

Keywords

Alkali işlem, Yüzey modifikasyonu, Polyester kumaş, Plazma işlemi

Effects of Chemical and Surface Modification on Mechanical and Chemical Properties of Polyester Fabrics

Abstract

The treatment of polyester fabric in alkali medium is
a common chemical modification process for producing a fabric with desirable
qualities such as soft cloth, fabric regain, water absorbency, and fabric
pilling with draping. However, if the optimization of the chemical treatment
was not maintained, there could be serious decrease in mechanical strength of
polyester fabrics. In this study, surface modification via low-temperature
plasma application (<50 ⁰C) were used as an alternative to
chemical modification of polyester fabrics with alkaline treatment and the
effects of both chemical and surface modification on mechanical and chemical
properties of polyester fabrics were investigated.  Parameters of chemical modification such as
exposure time and concentration of alkali were varied while different exposure
time was used in plasma application as a surface modification treatment.
Performance tests such as mechanical strength, loss of weight and
hydrophilicity of polyester fabrics were tested after each modification.
Scanning electron microscope (SEM) micrographs were characterized as well.
According to the test results; loss of weight of polyester fabrics after
chemical modification was more than occurred right after surface modification.
Advantages of surface modification on polyester fabrics were clearly seen in
this study, especially when compared to high concentration alkali treatment. It
was also considered that these functionalized polyester fabrics could be used
as an alternative platform for 3DP (three-dimentional printing) applications
before deposition of the polymers.

Keywords

Alkaline treatment, Surface modification, Polyester fabrics, Plasma application

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