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http://dx.doi.org/10.7473/EC.2014.49.3.181

Melt Grafting of EPDM and Itaconic Acid: Effect of Reaction Conditions and Initiator Type/Concentration  

Kim, Ki-Jae (Department of Chemical and Biomolecular Engineering, Pusan National University)
Bae, Jong-Woo (Innovation Material Research Group, Korea Institute of Footwear and Leather Technology)
Kim, Jung-Soo (Innovation Material Research Group, Korea Institute of Footwear and Leather Technology)
Lee, Jin-Hyok (Innovation Material Research Group, Korea Institute of Footwear and Leather Technology)
Kim, Gu-Ni (Innovation Material Research Group, Korea Institute of Footwear and Leather Technology)
Oh, Sang-Taek (Innovation Material Research Group, Korea Institute of Footwear and Leather Technology)
Kim, Wonho (Department of Chemical and Biomolecular Engineering, Pusan National University)
Publication Information
Elastomers and Composites / v.49, no.3, 2014 , pp. 181-190 More about this Journal
Abstract
Melt grafting of itaconic acid (IA) onto an ethylene-propylene-diene terpolymer (EPDM) with various organic peroxide initiators was performed. Finding the optimum mixing conditions and concentration of ingredients is critical for effective grafting and optimum properties of grafted materials. This study focused on the effects of mixing conditions (temperature and time), initiator type/concentration and monomer concentration on the grafting degree and efficiency, melt flow index, and gel content of EPDM-g-IA. The initiator, 2,5-dimethyl-2,5-di(tert-butyl peroxy)-hexane (T-101), appeared to meet for the best grafting degree (1.91%). The grafting degree increased markedly by increasing the amounts of monomer IA and initiator T-101. The grafting degree also increased by increasing mixing temperature and time. The optimum monomer and initiator concentrations and reaction temperature and time were found to be about 5wt%/0.05wt% and $160^{\circ}C$/15min, respectively. It was found that the physical properties of EPDM-g-IA were higher than those of the pristine EPDM.
Keywords
melt grafting; itaconic acid; ethylene-propylene-dieneterpolymer (EPDM); initiator;
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