Mechanism and Compatibilization Effect of Nanoparticles in Polymer Blends

Document Type : compile

Authors

1 polymer engineering, Department of Polymer Engineering and Color Technology, AmirKabir University of Technology, tehran, iran

2 polymer engineering. department of polymer engineering and color technology. amirkabir university of technology. Tehran. Iran

3 process groups. Iran Polymer and Petrochemical, Tehran, Iran

Abstract

Blending of polymers is one of the useful methods for developing polymeric materials with improved properties or creating special properties in polymers. The mixture of some polymers is completely or partially miscible, but the mixture of many polymers is immiscible and their microsructure will be multiphase due to high molecular weight and 
undesirable interactions. Extensive research has been conducted on the development of  blend compatibilization approaches. Surface modifcation of polymers, addition of block copolymers, reactive compatibilization, crosslinking, interpenetrating networks, and more recently the addition of fllers in the micro and nano dimensions are some of the methods used to improve the compatibility of mixtures. The reduction of modulus and its related properties, when adding polymeric compatibilizers has caused researchers to pay more attention to nanoparticles and their compatibility effect. Compatibility mechanisms of polymer blends using nanoparticles can be divided into two modes based on their location in the blend. Firs, nanoparticles in the matrix phase, by forming a three-dimensional network and increasing the viscosity, apply more sress to the dispersed phase, reduce the size of the dispersed regions, and then reduce the coalescence phenomena of dispersed particles. In the second case, the nanoparticles, by locating at the interface between the matrix and dispersed phases reduce the interfacial sress and increase the interfacial adhesion. Also, in 
this case, they prevent the integration of scattered phase droplets. In this paper, the effect of nanoparticle compatibility on polymer blends, mechanisms, and the afecting sructural 
factors are reviewed

Keywords


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