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http://dx.doi.org/10.7473/EC.2014.49.3.225

Preparation of PP-g-IA and its Compatibilizing Effects in PP/EVOH Blends  

Kim, Jung Soo (Human and Culture Convergence Technology R&BD Group, Korea Institute of Industrial Technology)
Jang, Ji-Hoon (Human and Culture Convergence Technology R&BD Group, Korea Institute of Industrial Technology)
Jeon, Dong-Gyu (Human and Culture Convergence Technology R&BD Group, Korea Institute of Industrial Technology)
Kim, Dong Hyun (Human and Culture Convergence Technology R&BD Group, Korea Institute of Industrial Technology)
Publication Information
Elastomers and Composites / v.49, no.3, 2014 , pp. 225-231 More about this Journal
Abstract
In this study, we used polypropylene grafted with itaconic acid (PP-g-IA) as a compatibilizer to prevent phase separation phenomenon which occurs upon blending polypropylene (PP) and ethylene-vinyl alcohol copolymer (EVOH). A compatibilizer was prepared using graft copolymerization of itaconic acid (IA) onto PP where input ratio of IA was 1, 2, 5, and 10 wt.%. To confirm the structure of PP-g-IA and the graft ratio of IA onto PP, we used $^1H$ NMR and FT-IR. We tested the compatibilizer which has highest graft ratio of 1% in immiscible PP/EVOH blends. The morphologies of PP/PP-g-IA/EVOH blends were analyzed by SEM. Thermal and mechanical properties of the blends were analyzed by DSC and UTM. PP-g-IA enhanced the interfacial adhesion of PP and EVOH copolymer.
Keywords
PP/EVOH; blend; compatibilizer; itaconic acid; graft copolymerization;
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