• Effect of Maleic Anhydride Graft Ratio on Physical Properties of HDPE/Kenaf Fiber/Heat Expandable Microcapsule Composites
  • Jong Won Lee and Youn Cheol Kim

  • Major in Polymer Science and Engineering, Kongju National University, Cheonan 31080, Korea

  • HDPE/케냐프 섬유/열팽창캡슐 복합체의 물성에 미치는 무수말레인산 그라프트 율의 영향
  • 이종원 · 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.


Maleic anhydride grafted polyethylene (PE-g-MAH) with different graft ratios and high density polyethylene (HDPE)/kenaf (KF)/heat-expandable microcapsules (EMC) using a twin screw extruder (thermal expendable microcapsule, EMC) composites were prepared. 4 Types of PE-g-MAH were used, 1 type was a commercialized product, and 3 types were a product manufactured through reaction extrusion. As a result of evaluating the foaming properties, miscibility, thermal stability and tensile strength of the HDPE/KF/EMC composite, it was found that the reaction-extruded PE-g-MAH-c (graft ratio = 1.962%) with MAH3 was the best. It is judged that the decrease in the specific gravity of the foam will be advantageous for reducing the weight of automobile interior materials.

이축압출기(twin screw extruder)를 이용하여 그라프트 율이 다른 무수말레인산 그라프트 폴리에틸렌(PE-g-MAH)과 고밀도 폴리에틸렌(high density polyethylene, HDPE)/케냐프(kenaf, KF)/열팽창성 마이크로 캡슐(thermal expendable microcapsule, EMC) 복합체를 제조하였다. 4종의 PE-g-MAH가 사용되었으며, 1종은 상업화된 제품, 3종은 반응압출을 통해 제조한 제품이 사용되었다. HDPE/KF/EMC 복합체의 발포특성, 혼화성, 열안정성 및 인장강도를 평가한 결과 MAH3의 배합으로 반응 압출된 PE-g-MAH-c(그라프트 율=1.962%)가 가장 우수함을 알 수 있었고 발포체 비중 감소는 자동차 내장제의 경량화에 유리할 것으로 판단된다.

Keywords: thermal expendable microcapsule, maleic anhydride grafted polyethylene, reaction extrusion, kenaf.

  • 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

  • 2024; 48(1): 35-40

    Published online Jan 25, 2024

  • 10.7317/pk.2024.48.1.35
  • Received on Aug 21, 2023
  • Revised on Dec 2, 2023
  • Accepted on Dec 12, 2023

Correspondence to

  • Youn Cheol Kim
  • Major in Polymer Science and Engineering, Kongju National University, Cheonan 31080, Korea

  • E-mail: