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열가소성 삼성분계 블렌드의 구조 조절 및 구조 조절이 물성에 미치는 효과
Variation of Morphology and Its Effect on Physical Properties in Thermoplastic Ternary Blends

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Authors
김정현; 차국헌
Issue Date
1993
Publisher
한국유변학회 = The Korean Society of Rheology
Citation
Korean J. Rheology, 5, 170 (1993)
Keywords
Reactive compatibilizationreactive extrusion (processing)thermoplastic ternary blends(alloys)rubber migration; variation of morphologymechanical propertythermal property
Abstract
결정성 고분자/비결정성 고분자/충격보강재의 조합으로 이루어진 열가소성 삼성분계 블렌드의 미세구조 조절이 기계적 및 열적 거시물성에 미치는 영향을 살펴보았다. 결정성 고분자로는 나일론6를, 비결정성 고분자로는 변성 폴리페닐린 옥사이드(PPO)를, 충격보강재로는 스티렌-에틸렌부틸렌-스티렌(SEBS) 삼중블록 공중합체를 사용하였고, 비상용인 나일론6와 변성 PPO 사이의 상용화를 위해 반응 상용화(reactive compatibilization) 방법을 사용하였다. 반응 상용화에 사용된 반응기로는 나일론의 말단기에 있는 친핵성기인 아민기와 반응성이 높은 친전자성기인 무수말레인산(MAH)을 충격보강 고무 SEBS에 그라프트시켜 충격보강 고무내의 SEBS-MAH의 함량을 증가시킴에 따라 처음에 PPO 분산상에 있던 고무가 나일론 연속상으로 이동하는 현상을 관찰하였다. 이러한 충격보강 고무의 SEBS-MAH 함량 증가에 의한 PPO 분산상에서 나일론상으로의 이동이 내충격성의 향상 및 내열성의 저하와 밀접한 관계가 있다는 것을 알았다. ; The effect of microstructure modulation of thermoplastic ternary blends consising of crystalline polymer, amorphous polymer, and impact modifier on the macroscopic mechanical and thermal properties has been investigated. In this study, nylon6 was chosen for the crystalline polymer, modified poly(phenylene oxide)(PPO) for the amorphous polymer and styrene-ethylenebutylene-styrene(SEBS) tribock copolymer for the impact modifier. Reactive compatibilization was utilized to compatibilize the otherwise immiscible nylon6 and modified PPO. The functional groups used for the reactive compatibilization were maleic anhydride(MAH), which is highly reactive with amine terminal groups of nylon6, grafted onto SEBS impact modifier. The migration of the impact modifier, which was initially confined in PPO domain, to nylon continuous phase was observed as the amount of SEBS-MAH in the SEBS-MAH mixture was increased. We noted that the migration of the impact modifier from PPO domain to nylon continuous phase has strong effect on mechanical properties as well as thermal resistant properties of the resulting ternary blends.
ISSN
1226-119X
Language
Korean
URI
http://www.cheric.org/research/tech/periodicals/view.php?seq=9419

http://www.rheology.or.kr

http://hdl.handle.net/10371/5915
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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