ONUR YILMAZ, Catalina Natalia CHEABURU YILMAZ

Synthesis and Application of a Low Emulsifier Content Composite Polyacrylic Latex for Leather Finishing

Kompozit yapılı bir poliakrilik lateks, iki aşamalı tohumlanmış emülsiyon polimerizasyonu ile düşük emülgatör içerikli (ağ. %0.5) olarak sentezlenmiş; partikül boyutu ve zeta potansiyeli analizi, FTIR ve diferansiyal taramalı kalorimetri kullanılarak karakterize edilmiştir. Elde edilen sonuçlar lateksin çok homojen bir partikül boyutu dağılımına ve iyi elektrostatik stabiliteye sahip olduğunu göstermiştir. Kompozit polimerin farklı fazları DSC analizi ile iki net faz geçişi olarak ortaya konmuştur. Lateksin mamul derilerde kaplama binderi olarak uygulanması sonrasında, yaş/kuru sürtme haslıkları ile su damlası haslığı testlerinin iyi sonuçlar verdiği gözlenmiştir. Sentezlenen lateksin, iyi performansa sahip, düşük maliyetli su bazlı binderlerin üretimi için iyi bir aday olduğu tespit edilmiştir.

Anahtar Kelimeler:

Kompozit lateks, deri finisajı, kaplama, akrilat, emülsiyon polimerizasyonu

Synthesis and Application of a Low Emulsifier Content Composite Polyacrylic Latex for Leather Finishing

A composite polyacrylic latex via two stage seeded emulsion polymerization with low emulsifier content (0.5 wt.%) was synthesized and characterized by means of particle size and zeta potential analysis, FTIR and differential scanning calorimetry (DSC). The results verified a very uniform particle size distribution and good electrostatic stability. The different phases of the composite polymer were evidenced by DSC analysis with two clear phase transitions. The application of the latex on leathers as coating binder revealed good fastness levels to dry/wet rubbing and water spotting. The synthesized composite latex was found to be good candidate for producing cost-effective waterborne binders with good performance.

Keywords:

Composite latex, leather finishing, coating, acrylate, emulsion polymerization,

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