Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Properties of Poly(oxymethylene)/Modified Poly[styrene-b-(ethylene-1-butene)-b-styrene] Triblock Copolymer Blends

폴리(옥시메틸렌)/개질 폴리[스티렌-b-(에틸렌-1-부텐)-b-스티렌] 삼블록 공중합체 블렌드의 물성

  • Jeon, Hyun-Uk (Department of Polymer Science Engineering, Pusan National University) ;
  • Kim, Seung-Woo (Department of Polymer Science Engineering, Pusan National University) ;
  • Kim, Gue-Hyun (Division of Applied Engineering, Dongseo University) ;
  • Kim, Il (Department of Polymer Science Engineering, Pusan National University) ;
  • Ha, Chang-Sik (Department of Polymer Science Engineering, Pusan National University)
  • 전현욱 (부산대학교 고분자공학과) ;
  • 김승우 (부산대학교 고분자공학과) ;
  • 김규현 (동서대학교 응용공학부) ;
  • 김일 (부산대학교 고분자공학과) ;
  • 하창식 (부산대학교 고분자공학과)
  • Published : 2004.03.01
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Abstract

Poly[styrene-b-(ethylene-1-butene)-b-styrene] triblock copolymer (SEBS) was functionalized with 0 to 3.0 phr maleic anhydride and the amount of dicumyl peroxide used as an initiator was varied from 0 to 0.3phr. The gel content of the modified SEBS was determined by xylene extraction and poly(oxymethylene) was blended with the modified SEBS. The impact, tensile, flexural strength and morphologies of the blends were investigated. The Izod impact strength of poly(oxymethylene) was improved through its blending with modified SEBS. However, the Izod impact strength of poly(oxymethylene)/modified SEBS blend decreased above 5% modified SEBS content. Regarding the effect of dicumyl peroxide content on the Izod impact strength, the blend had a maximum Izod impact strength when poly(oxymethylene) was blended with modified SEBS prepared with 0.1 phr dicumyl peroxide. It was also confirmed by SEM micrographs that the average particle size of modified SEBS in poly(oxymethylene)/modified SEBS blends was smaller than that of SEBS in poly(oxymethylene)/SEBS blends.

0-0.3phr의 디큐밀 퍼옥사이드를 개시제로 사용하여 0-3.0 phr 말레산 무수물에 의해 폴리[스티렌-블록-(에틸렌-1-부텐)-블록-스티렌] 삼블록 공중합체 (SEBS)는 관능화되었다. 개질 SEBS의 젤 함량은 자일렌 추출에 의해 결정되었고, 폴리(옥시메틸렌)이 개질 SEBS와 혼합되었다. 혼합물의 충격, 인장, 굴곡강도 그리고 형태학적 특성을 조사하였다. 폴리(옥시메틸렌)의 충격강도는 개질 SEBS와의 블렌드를 통하여 향상되었다. 그러나 개질 SEBS가 5% 보다 더 많아지면 블렌드의 충격강도가 감소하였다. 충격강도에 대한 디큐밀퍼옥사이드 농도의 영향을 살펴보면, 폴리(옥시메틸렌)이 디큐밀 퍼옥사이드 0.1phr을 사용하여 제조된 개질 SEBS와 블렌드시 최대 충격강도를 나타내었다. 또한 주사전자 현미경 사진에 의하면 폴리(옥시메틸렌)/개질 SEBS블렌드의 개질 SEBS 입자크기가 폴리(옥시메틸렌)/SEBS블렌드의 SEBS 입자 크기보다 작게 나타났다.

Keywords

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