열분해 폴리에틸렌 왁스의 아크릴산 그래프트 반응 특성

김정식; 김효철; 김종환; 윤주한; 김형일; Jeongsik Kim; Hyochul Kim; Jonghwan Kim; Juhan Youn; Hyung-il Kim

Polymer(Korea), Vol.41, No.5, 745-749, September, 2017

DOI10.7317/pk.2017.41.5.745 Export Citation

열분해 폴리에틸렌 왁스의 아크릴산 그래프트 반응 특성

Characteristics of Graft Reaction of Acrylic Acid on Pyrolysis Polyethylene Wax

김정식, 김효철, 김종환, 윤주한, 김형일^†

충남대학교 공업화학과

Jeongsik Kim, Hyochul Kim, Jonghwan Kim, Juhan Youn, and Hyung-il Kim^†

Department of Industrial Chemistry, College of Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea

E-mail:

초록

열분해 반응을 통해 제조된 비극성 폴리에틸렌 왁스에 대해 극성 아크릴산 단량체를 그래프트 반응시켜 기능성 첨가제를 제조하였고, 반응인자가 그래프트 효율에 미치는 영향을 조사하였다. 폴리에틸렌 왁스의 분자량이 작을수록 그래프트율이 증가하였다. 아크릴산 함량이 증가할수록 그래프트율이 증가하였으나 과량의 아크릴산 함량에서는 비극성 반응물과의 혼화성이 불량하여 그래프트율이 감소하였다. 반응시간이 증가하거나 반응온도가 증가함에 따라 폴리에틸렌 사슬에 그래프트 반응활성점이 증가하여 그래프트율이 향상되었다. 개시제로는 반기가 더 긴 라 디칼 개시제가 동일 반응조건에서 더 높은 그래프트율을 나타내었다. 그래프트율이 증가할수록 그래 트 폴리에틸 렌 왁스의 유리전이온도는 감소하였다.

Functional additives were prepared by grafting polar acrylic acid on nonpolar polyethylene wax which was produced by pyrolysis. The effect of reaction factors on grafting degree was investigated. The grafting degree increased as the molecular weight of polyethylene wax decreased. Although the grafting degree increased as acrylic acid content increased, the grafting degree became lower in case of excess acrylic acid content due to the incompatibility with nonpolar reaction medium. The grafting degree increased as both reaction temperature and reaction time increased because of the increased formation of reaction active sites on polyethylene chains. The radical initiator of longer half life gave the higher grafting degree at the same reaction conditions. Glass transition temperature of grafted polyethylene wax decreased as the grafting degree increased.

Keywords:pyrolysis polyethylene wax;graft polymerization;acrylic acid;grafting degree

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[1] Mark HF, Kroschwitz JI, Encyclopedia of Polymer Science and Engineering, John Wiley & Sons, Vol 17, 784 (1989).

[2] Yu EY, Seo G, Kim SC, J. Korean Soc. Environ. Eng., 23, 569 (2001)

[3] Ahn BJ, Choi KH, Theories and Application of Chemical Engineering, 7, 4903 (2001)

[4] Buechner O, Immel W, U.S. Patent 3,557,074 (1971).

[5] Choi BR, Park YJ, J. Korean Ind. Eng. Chem., 8(5), 837 (1997)

[6] Yu SW, Choi JS, Na JS, Clean Technol., 19(4), 393 (2013)

[7] Moad G, Prog. Polym. Sci, 24, 81 (1999)

[8] Yu SW, Choi JS, Na JS, J. Korean Inst. Resources Recycling, 23, 48 (2014)

[9] Gaylord NG, Mehta R, J. Polym. Lett. Ed., 20, 481 (1982)

[10] Brandrup J, Immergut EH, Polymer Handbook, 3rd edition, Wiley Interscience, Toronto, pp.II/2~II/25 (1989).

[11] Ghaemy M, Roohina S, Iran. Polym. J., 12, 21 (2003)