Abstract
A compatibilizer, poly(3-hexylthiophene)- graft-poly( t-butyl acrylate- co-acrylic acid) was synthesized, where the acrylic aid was formed by hydrolysis of t-butyl acrylate unit. It has been identified that poly(3-hexylthiophene) backbone of the compatibilizer interacts with multi-walled carbon nanotubes (MWCNTs) via π– π interaction and the acrylic acid unit of the graft chain interacts with Nylon 66 (N66) matrix via hydrogen bonding. When a small amount of compatibilizer was added to N66/MWCNT composites, MWCNTs were more homogeneously dispersed in N66 matrix than the case without compatibilizer. As a consequence, mechanical and electrical properties of the composites with compatibilizer were largely improved as compared with those of composites without compatibilizer.
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