폴리에틸렌 왁스와 무수 말레인산의 그라프팅 중합 반응에서 용매가 미치는 영향
Effect of Solvent on the Grafting Polymerization of Polyethylene Wax with Maleic anhydride
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초록
본 연구에서는 고밀도 폴리에틸렌 제조공정에서 부산물로 생성되는 폴리에틸렌 왁스를 대상으로 무수말레인산을그라프트 반응 시킬 때, 반응 용매가 가지는 성질의 영향에 대해서 조사하였다. 측정결과, 자일렌이 톨루엔보다 우수한 모노머 용해성, 팽윤성, 혼화성을 가지며, 그라프트 반응을 더욱 촉진함을 알 수 있었고, 반응 용매의 함량에따라서는 0 ~ 200% v/w영역에서 200% v/w 조건이 최대의 그라프트 율을 보이고, 그이상의 용매가 사용될 경우에는 그라프트 율이 다시 감소하다가 일정해짐을 확인하였다. 가교도 함량 값은 용매 존재 하에 거의 생성되지 않았으며, 용매가 용매분자로 사슬이동반응 시켜 가교반응을 방지하는 것으로 판단되었다. 140oC에서 측정된 용융 점도값은 폴리에틸렌 왁스에 무수말레인산이 그라프트 된 후에 증가하는 경향을 보임을 알 수 있었다.
Abstract
In this study, we have investigated the influence of the nature of solvent on the grafting reaction of maleic anhydride ontopolyethylene wax obtained as a by-product in a high density polyethylene plant. The results show that the grafting ratio in xyleneas a solvent was higher than toluene. This is because xylene has excellent monomer solubility, swelling property and miscibility. It has been also observed that grafting degree shows an initial jump in percentage of grafting with increasing amount of solvent,from 0% v/w to 200% v/w giving maximum grafting in 200% v/w and then slightly decreases on further increase in the amountof solvent and becomes almost constant. It can be also seen that gel content was not formed under the use of solvent. It meansthat solvent prevented cross-linking reaction due to chain transfer reactions to solvent molecules. Studies of melt viscosity at140oC showed that viscosity increased after grafting of maleic anhydride onto polyethylene wax.
참고문헌 (10)
- Eui-Yeon Yu, "Recycle of Low Molecular Weight Polyethylene for Oxidized Polyethylene Waxes", Journal of Korean Society of Environmental Engineers, 21(3), pp.569~578 (1999)
- Byung-Ryul Choi, "Studies on Oxidation Modification of Polyethylene Wax", Journal of Korean Industry and Engineering Chemistry, 8(5), pp.837~843 (1997)
- Byung-Ryul Choi, "A Study on the Maleation of Polyethylene Wax Obtained as Byproduct in a High Density Polyethylene Plant", Polymer Society of Korea, 22(1), pp.56~63 (1998)
- Yanhan Shen, "Solvothermal Preparation and Characterization of Maleic Anhydride Grafting High Density Polyethylene Copolymer", Journal of Applied Polymer Science, 104(1), pp.3443~3452 (2007)
- Mousa Ghaemy, "Grafting of Maleic Anhydride on Polyethylene in a Homogeneous Medium in the Presence of Radical Initiators", Iranian Polymer Journal, 12(1), pp.21~29 (2003)
- H. R. Z. Sheshkali, "Parameters Affecting the Grafting Reaction and Side Reactions Involved in the Free-Radical Melt Grafting of Maleic Anhydride onto High-Density Polyethylene", Journal of Applied Polymer Science, 105(1), pp.1869~1881 (2007)
- Jun Qian, "Grafting of Maleic Anhydride onto Polyethylene Wax by Melt Ultrasound and Solid Co-irradiation", Incorporating Plasma Science and Plasma Technology, 165(11), pp.834~844 (2010)
- N. G. Gaylord, "High Density Polyethylene-g-Maleic Anhydride Preparation in Presence of Electron Donors", Journal of Applied Polymer Science, 38(1), pp.359~371 (1989)
- Jun Yin, "Melt Grafting of Poly(ethylene-vinyl acetate) Copolymer with Maleic Anhydride", Journal of Applied Polymer Science, 102(1), pp.841~846 (2006)
- Le-Ping Huang, "Maleic Anhydride-Grafted Linear Low-Density Polyethylene with Low Gel Content", Polymer Engineering and Science, 10(1), pp.673~679 (2009)