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http://dx.doi.org/10.7473/EC.2013.48.1.39

Melt Grafting of Citraconic Acid onto an Ethylene-Propylene-Diene Terpolymer (EPDM) -Effect of Reaction Conditions and Initiator Type on the Melt Grafting of Citraconic Acid onto EPDM-  

Kim, Jung-Soo (Industrial Materials Fusion Technology Center, Korea Institute of Footwear and Leather Technology)
Bae, Jong-Woo (Industrial Materials Fusion Technology Center, Korea Institute of Footwear and Leather Technology)
Lee, Jin-Hyok (Industrial Materials Fusion Technology Center, Korea Institute of Footwear and Leather Technology)
Oh, Sang-Taek (Industrial Materials Fusion Technology Center, Korea Institute of Footwear and Leather Technology)
Kim, Gu-Ni (Industrial Materials Fusion Technology Center, Korea Institute of Footwear and Leather Technology)
Lee, Young-Hee (Department of Organic Material Science and Engineering, Pusan National University)
Kim, Han-Do (Department of Organic Material Science and Engineering, Pusan National University)
Publication Information
Elastomers and Composites / v.48, no.1, 2013 , pp. 39-45 More about this Journal
Abstract
Melt grafting of citraconic acid (CCA) onto an ethylene-propylene-diene terpolymer (EPDM) with various peroxide initiators was performed using a Haake Rheocorder. Finding the optimum running condition and concentration is critical for effective grafting and performance of grafted material. Therefore, this study focused on the effects of mixing (reaction) condition and monomer/initiator dosages on the grafting degree, grafting efficiency and crosslinking degree (gel content), melt flow index and mechanical properties of CCA-g-EPDM. As the grafting degree/crosslinking degrees increased, the tensile strength increased significantly, but elongation at break and melt flow index decreased. The initiator 2,5-dimethyl-2,5-di(tert-butyl peroxy)-hexane (T-101) appeared to meet for the best grafting(2.31%). The grafting degree increased markedly with increasing monomer CCA/initiator T-101 contents. The grafting degree also increased with increasing mixing temperature/time, and then leveled off or decreased/increased a little. The optimum monomer/initiator dosages and reaction temperature/time were found to be about 5/0.05 wt% and $180^{\circ}C$/15min, respectively.
Keywords
melt grafting; citraconic acid; ethylene-propylene-diene terpolymer (EPDM); initiator;
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