ULTRAVİYOLE (UV) IŞINLARININ FARKLI TEKNİK POLİESTER İPLİKLERİN ÖZELLİKLERİ ÜZERİNE ETKİSİNİN İNCELENMESİ

Yıl 2019, Cilt: 24 Sayı: 1, 253 - 264, 30.04.2019

Sebnem Duzyer

https://doi.org/10.17482/uumfd.514016

Öz

Bu çalışmada, ultraviyole (UV) ışınlarının teknik
alanlarda kullanılan poliester ipliklerin yüzey özellikleri, mekanik
özellikleri ve içyapısı üzerine etkisi araştırılmıştır. Bu amaçla teknik
alanlarda kullanılan yüksek dayanımlı polietilen tereftalat (HT PET), boyutsal
kararlı polietilen tereftalat (DS PET), polietilen naftalat (PEN) ve sıvı
kristal polimer yapısında olan Vectran
iplikler kullanılmıştır. Karşılaştırma yapılabilmesi amacıyla konvansiyonel
olarak kullanılan tam çekimli polietilen tereftalat (FDY PET) iplikler de
çalışmaya dâhil edilmiştir. İpliklerin UV ile yaşlandırma sonrası yüzey
özellikleri taramalı elektron mikroskobu (SEM), mekanik özellikleri çekme testleri,
içyapılarındaki değişiklikler ise Fourier Dönüşümlü Infrared Spektrofotometre
(FTIR) analizleri ile incelenmiştir. Yapılan çalışmalar sonucunda, UV ile yaşlandırma
sonrasında en belirgin değişikliklerin Vectran’da,
en az değişimin ise PEN’de olduğu gözlenmiştir. Vectran liflerinin sarardığı, yüzeylerinde bazı hasarların meydana geldiği
ve mekanik özelliklerinin olumsuz etkilendiği görülmüştür. FTIR analizleri de
bu bulguları desteklemektedir. 

Anahtar Kelimeler

Vectran, Polietilen tereftalat, Polietilen naftalat, Ultraviyole ışınları

An Investigation on the Effect of Ultra Violet (UV) Light on the Properties of Different Technical Polyester Yarns

Öz

In this study, the effect of ultraviolet (UV) light on the surface
properties, mechanical properties and microstructural properties of technical
polyester yarns were investigated. Therefore, high tenacity polyethylene
terepthtalate (HT PET), dimensionally stable polyethylene terepthtalate (DS
PET), polyethylene naphthalate (PEN) and liquid crystal polymer Vectran yarns were used. Fully drawn
polyethylene terepthtalate (FDY PET) yarns were also included in the study in
order to compare the results. The changes
in the properties of the samples after UV aging were investigated by scanning
electron microscopy (SEM) studies, tensile tests and Fourier transform infrared
spectroscopy (FTIR) analyses. The most significant difference was observed
in Vectran in terms of colour and surface properties. Moreover, the mechanical properties of Vectran were negatively affected. PEN
showed the least difference among the other samples. FTIR results supported the
findings. 

Anahtar Kelimeler

Vectran, Polyethylene terepthtalate, Polyethylene naphthalate, Ultraviolet light

Kaynakça

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