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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-

EPDM고무와 씨트라코닉산의 melt grafting - 반응조건과 개시제에 따른 영향 연구 -

  • 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)
  • 김정수 (한국신발피혁연구소 산업소재융합기술센터) ;
  • 배종우 (한국신발피혁연구소 산업소재융합기술센터) ;
  • 이진혁 (한국신발피혁연구소 산업소재융합기술센터) ;
  • 오상택 (한국신발피혁연구소 산업소재융합기술센터) ;
  • 김구니 (한국신발피혁연구소 산업소재융합기술센터) ;
  • 이영희 (부산대학교 유기소재공학과) ;
  • 김한도 (부산대학교 유기소재공학과)
  • Received : 2012.12.17
  • Accepted : 2013.01.03
  • Published : 2013.03.31

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.

Acknowledgement

Supported by : Ministry of Knowledge Economy

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