Authors: Alican Vatansever Tulay Inan Hacer Dogan Ahmet Sirkecioglu
Publish Date: 2015/09/08
Volume: 73, Issue: 4, Pages: 909-925
Abstract
Nanocomposites based on polyBAcoMMA and organomontmorillonite OMt were synthesized by semi batch emulsion polymerization OMt was used directly after the organic modification of sodium montmorillonite Mt By this way dispersion of OMt in emulsion polymerization was improved OMts were prepared by organic modification of Resadiye Mt bentonite with five different quaternary ammonium salts QAS to observe the effect of structural difference on the polybutyl acrylatecomethyl methacrylate nanocomposites The affinity of OMts towards organic liquids was observed via swelling test in toluene and butyl acrylate BAmethyl methacrylate MMA mixture OMt content in the nanocomposite as well as the effect of QAS structure and dosage was investigated Good dispersion of OMt in copolymer films was obtained as demonstrated by Xray diffraction and partially exfoliated OMt structure was determined through transmission electron microscope Final nanocomposites had 47 wt solids contents Nanocomposite containing 23 wt OMt modified with two 18 carbons alkyl chain at excess QAS amount resulted in higher increments of thermal mechanical barrier properties and glossiness for coating applicationsThis work was financially supported by The Scientıfıc and Technological Research Council of Turkey TUBITAK through the National support program The authors thank Nevin Bekir Zekayi Korlu for their valuable technical assistance in laboratory and Filli Boya A Ş for gloss measurements Operation of TEM was possible with help of Özgür Duygulu
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