Article
  • Study on the Rheological Properties and Fabrication of Branched PP with Divinylbenzene

  • Jun Seok Kim and Youn Cheol Kim†

  • Major in Polymer Science and Engineering, Kongju National University, 1223-34 Cheonan way, Cheonan 31080, Korea

  • 디비닐벤젠을 이용한 분지화 PP 제조 및 유변학적 특성 연구

  • 김준석 · 김연철†

  • 공주대학교 신소재공학부 고분자공학전공

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

After preparing branched polypropylene (BPP) through reaction extrusion using a twin-screw extruder, structural changes due to branching were analyzed using rheological properties. Divinylbenzene (DVB) was used as a branching agent, and dicumyl peroxide (DCP) was used as an initiator. Structural change, degree of branching, molecular weight, and relaxation time were analyzed using rheological properties. The crystallization temperature of BPP increased, and it was confirmed that the crystallization rate and crystal growth process were changed through Avrami analysis.


분지화 PP(branched polypropylene, BPP)를 이축압출기를 이용하여 반응압출을 통해 제조한 후 분지화에 따른 구조적 변화를 유변학적 특성을 이용하여 분석하였다. 분지제로는 divinylbenzene(DVB)을 사용하였으며, dicumyl peroxide(DCP)를 개시제로 사용하였다. 유변학적 특성을 이용하여 구조적 변화, 분지화 정도, 분자량, 완화시간 등을 분석하였다. 분지화 PP의 결정화온도는 증가하였고, Avrami 분석을 통해 결정화속도 및 결정 성장과정이 변화하는 것을 확인할 수 있었다.


Keywords: polypropylene, rheological properties, branched polypropylene, divinylbenzene.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2022; 46(5): 577-582

    Published online Sep 25, 2022

  • 10.7317/pk.2022.46.5.577
  • Received on Apr 14, 2022
  • Revised on Jun 16, 2022
  • Accepted on Jul 17, 2022

Correspondence to

  • Youn Cheol Kim

  • Major in Polymer Science and Engineering, Kongju National University, 1223-34 Cheonan way, Cheonan 31080, Korea

  • E-mail: younkim@kongju.ac.kr