• Enhancing Bio PC/CNF Nanocomposite Performance Through Bio PC-g-MA Compatibilizer

  • Gyeong Eun Kim*,#, Do Hyun Kwon**,#, Jaehyun Lee, and Jung Sul Jung†

  • Advanced Chemical Material R&D Center, Korea Testing & Research Institute, 89 Sepungsandan1-ro, Gwangyang-eup, Gwangyang 57765, Korea
    *School of Chemical Engineering, Pusan National University, Busan 46241, Korea
    **School of Chemical Engineering, Chonnam National University, Gwangju 61186, Korea

  • Bio PC-g-MA 상용화제 적용을 통한 Bio PC/CNF 나노복합체의 성능 향상

  • 김경은*,# · 권도현**,# · 이재현 · 정정설†

  • 한국화학융합시험연구원 첨단화학소재센터, *부산대학교 응용화학공학부, **전남대학교 화학공학부

  • 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

Bio polycarbonate (Bio PC) using Isosorbide, a biomass material, has a biomass content of 25–50%, and has the disadvantage of deteriorating mechanical properties and heat resistance compared to petroleum-based polycarbonate (PC). In order to improve these disadvantage, a study was conducted to manufacture Bio PC/CNF nanocomposite by complexing cellulose nanofiber (CNF). Bio PC-g-MA compatibilizer was synthesized through a reaction extrusion process to prevent the deterioration of physical properties due to weak interfacial adhesion between the two materials, and it was applied to the nanocomposite to confirm changes in mechanical properties and heat resistance. Tensile and flexural strength were added up to 22%, 10% compared to the Bio PC due to the high tensile properties of CNF and increased compatibility by the addition of Bio PC-g-MA. Through SEM and X-ray 3D CT image analysis, it was confirmed that the interfacial adhesion between Bio PC and CNF increased and dispersibility of CNF improved, and it was confirmed that the Bio PC-g-MA compatibilizer had an effect on improving the physical properties of Bio PC/CNF nanocomposite.


바이오매스 물질인 isosorbide 원료를 적용한 bio polycarbonate(Bio PC)는 바이오매스 함량이 25-50% 수준이며, 석유계 polycarbonate(PC) 대비 기계적 물성과 내열성 등이 저하되는 단점이 존재한다. 본 연구에서는 이러한 단점을 개선하기 위해 cellulose nanofiber(CNF)를 복합화하여 Bio PC/CNF 나노복합체를 개발하는 연구를 수행하였다. 두 소재의 약한 계면 접착력으로 인한 물성 저하를 방지하기 위해 반응압출 공정으로 Bio PC-g-MA 상용화제를 합성하였고, 이를 Bio PC/CNF 나노복합체에 적용하여 기계적 물성과 내열성 변화를 확인하였다. 인장, 굴곡강도는 CNF의 높은 인장 특성과 Bio PC-g-MA 첨가에 의한 상용성 증대로 인해 Bio PC 단일 소재 대비 최대 22%, 10%까지 증가하였다. SEM과 X–ray 3D CT 이미지 분석을 통해 Bio PC와 CNF 두 소재의 계면 접착력이 증가함과 동시에 CNF 분산성이 개선됨을 확인하였고, 이로 인해 Bio PC-g-MA 상용화제가 Bio PC/CNF 나노복합체의 물성을 향상시키는 데 영향을 미치는 것을 확인하였다.


Keywords: bio polycarbonate, cellulose nanofiber, nanocomposite, compatibilizer, maleic anhydride.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2025; 49(1): 44-51

    Published online Jan 25, 2025

  • 10.7317/pk.2025.49.1.44
  • Received on Jun 28, 2024
  • Revised on Oct 18, 2024
  • Accepted on Oct 18, 2024

Correspondence to

  • Jung Sul Jung

  • Advanced Chemical Material R&D Center, Korea Testing & Research Institute, 89 Sepungsandan1-ro, Gwangyang-eup, Gwangyang 57765, Korea

  • E-mail: jsyk38317@ktr.or.kr