Article
  • Preparation and Properties of Thiol-ene UV-Photopolymerized Nanocomposites Using Cellulose Nanocrystals (CNCs) with Thiol Groups as Fillers
  • Seosuk Park, Youna Lee, and KiRyong Ha

  • Department of Chemical Engineering, Keimyung University, Daegu 42601, Korea

  • 셀룰로오스 나노결정 표면에 Thiol기가 도입된 충전제를 이용한 Thiol-ene UV 광중합 나노복합체 제조 및 물성에 대한 연구
  • 박서숙 · 이유나 · 하기룡

  • 계명대학교 공과대학 화학공학과

Abstract

In this study, thiol groups were introduced on the surface of cellulose nanocrystal (CNC) by silanization using (3-mercaptopropyl)trimethoxysilane (MPTS). Nanocomposites comprising of acrylate resin and fillers, such as pristine CNC and MPTS-modified CNC (CNC-MPTS), were prepared to study the effect of surface-modified CNC on various thermomechanical properties. Comparing the Tg and modulus of the nanocomposites with the 5 wt% pristine CNC and the CNC-MPTS fillers to UV cured resin without filler, this study confirmed an increase in Tg by 7.4 and 10.4 ℃, and improvement in modulus by 1.33 and 2.06 times by dynamic mechanical analyzer (DMA) and universal testing machine (UTM), respectively


본 연구에서는 cellulose nanocrystal(CNC)를 개질하기 위해 (3-ercaptopropyl)trimethoxysilane(MPTS)를 사용하여 실란화 반응을 통해 CNC 표면에 티올기(-SH)를 도입하였다. 개질된 CNC가 나노복합체에 미치는 영향을 연구하기 위하여, 순수 CNC와 MPTS로 개질된 CNC(CNC-MPTS)를 충전제로 사용하여 acrylate계 수지와 thiol-ene 광중합법으로 나노복합체를 제조하였다. 순수 CNC 및 CNC-MPTS를 5 wt% 사용한 나노복합체의 Tg와 인장강도를 순수 수지 중합체와 비교하면, Tg는 7.4 및 10.4 ℃ 증가하고, 탄성률은 1.33 및 2.06배 증가하는 것을 동적기계분석기(DMA) 및 만능재료시험기(UTM) 측정으로 각각 확인하였다


Keywords: cellulose nanocrystal, (3-mercaptopropyl)trimethoxysilane, surface modification, thiol-ene photopolymerization, mechanical property

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2018 Impact Factor : 0.500
  • Indexed in SCIE

This Article

  • 2020; 44(1): 99-108

    Published online Jan 25, 2020

  • 10.7317/pk.2020.44.1.99
  • Received on Oct 17, 2019
  • Revised on Nov 14, 2019
  • Accepted on Nov 14, 2019

Correspondence to

  • KiRyong Ha
  • Department of Chemical Engineering, Keimyung University, Daegu 42601, Korea

  • E-mail: ryongi@kmu.ac.kr