GRAFTING OF 2-HYDROXY ETHYL METHACRYLATE ONTO WOOL YARNS TO IMPROVE THEIR SHRINK-RESISTANCE AND FASTNESS PROPERTIES

Year 2018, Volume: 28 Issue: 1, 27 - 33, 01.04.2018

Fatma Nuralın Mehlika Pulat

Abstract

    In this
study, 2-Hydroxy ethyl methacrylate (HEMA) monomer was grafted onto wool yarns
via chemically-induced
method. Grafting conditions and product characterization were
investigated. The effects of grafting temperature, grafting time, monomer and
initiator concentrations on grafting yield (GY) percentages were examined and
the optimum grafting conditions were determined. Maximum GY value was obtained
as 55%.  Swelling tests showed that grafting
of HEMA negatively affect the swelling percentages of wool grafted yarns. SEM
analyses also were performed in order to detect the surface differences between
grafted and ungrafted yarns. The dyed fibers were subjected to weather, washing
and rubbing fastness tests and higher fastness ratings were observed for grafted
yarns, compared to ungrafted samples. Shrinking tests were also carried out to
10%, 20% and 35% HEMA grafted wool yarns and satisfactory results were
obtained.

Keywords

Wool yarn, HEMA, grafting, fastness, shrinking

YÜZEYLERİNE 2-HİDROKSİ ETİL METAKRİLAT AŞILAMASI İLE YÜN İPLİKLERİN ÇEKME VE HASLIK ÖZELLİKLERİNİ GELİŞTİRMESİ

Abstract

    Bu
çalışmada, yün ipliklere kimyasal başlatıcılı metodla 2-Hidroksi etil
metakrilat (HEMA) monomeri aşılandı. Aşılama koşulları incelendi ve ürün
karakterizasyonları yapıldı. Aşılama sıcaklığı, aşılama süresi, monomer ve
başlatıcı derişimlerinin aşılama verimi (GY) yüzdesine etkisi araştırıldı ve
optimum aşılama koşulları saptandı. En yüksek GY değeri % 55 olarak elde
edildi. Şişme testleri, HEMA aşılanmasının 
yün ipliklerin şişmesini negative etkilediğini gösterdi. Aşılanmış ve
aşılanmamış ipliklerin yüzeylerindeki farklılıkları belirlemek için SEM
incelemeleri de yapıldı.  Boyanmış
ipliklere hava, yıkama ve sürtünme haslık estleri uygulandı ve aşılanmış
ipliklerde aşılanmamışlara göre daha yüksek haslık değerleri elde edildi. %10,
%20 ve %35 HEMA aşılanmış yün ipliklere çekme testleri de yapıldı ve oldukça
tatminkar sonuçlara ulaşıldı.

Keywords

Yün iplik, HEMA, aşılama, haslık, çekme

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