화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.44, No.4, 579-588, July, 2020
DOI10.7317/pk.2020.44.4.579  Export Citation
표면 개질된 셀룰로오스 나노 결정 충전제가 디알릴 에테르 단량체를 사용한 Thiol-ene 광중합 나노복합체의 기계적 물성에 미치는 영향
Effect of Surface Modified Cellulose Nanocrystal Fillers on the Mechanical Properties of Thiol-ene Photopolymerized Nanocomposites Using Diallyl Ether Monomer
박서숙, 이유나, 하기룡†
  • 계명대학교 공과대학 화학공학과
Seosuk Park, Youna Lee, and KiRyong Ha†
  • Department of Chemical Engineering, Keimyung University, Daegu 42601, Korea
E-mail:
초록
본 연구에서는 (3-mercaptopropyl)trimethoxysilane(MPTS)를 사용하여 cellulose nanocrystal(CNC) 표면에 티올기(-SH)를 도입하였다. 순수 CNC와 MPTS로 개질된 CNC(CNC-MPTS)를 나노충전제로 사용하여 trimethylolpropane tris(3-mercaptopropionate)(TMPTMP)와 trimethylolpropane diallyl ether(TMPAE)를 thiol-ene 광중합법으로 나노복합체를 제조하였다. 5.0 wt%의 순수 CNC 및 CNC-MPTS를 나노충전제로 사용한 나노복합체의 탄성률과 Tg를 순수 수지 중합체와 비교하면, 탄성률은 1.31 및 1.59배 증가하고, Tg는 1.3 및 1.8 °C 증가하는 것을 만능재료시험기(UTM) 및 동적기계분석기(DMA) 측정으로 각각 확인하였다.
In this study, thiol groups were introduced on the surface of cellulose nanocrystal (CNC) using (3-mercaptopropyl)trimethoxysilane (MPTS). We prepared nanocomposites using pristine CNC and MPTS-modified CNC (CNC-MPTS) as nanofillers and undergoing thiol-ene photopolymerization in trimethylolpropane tris(3-mercaptopropionate) (TMPTMP) and trimethylolpropane diallyl ether (TMPAE). By comparing the modulus and glass transition temperature (Tg) of nanocomposites with 5.0 wt% pristine CNC and the CNC-MPTS nanofillers to UV cured resin without filler, this study confirmed an increase in modulus by 1.31 and 1.59 times, and increase in Tg by 1.3 and 1.8 °C by universal testing machine (UTM) and dynamic mechanical analyzer (DMA), respectively.
Keywords:cellulose nanocrystal;(3-mercaptopropyl)trimethoxysilane;thiol-ene photopolymerization;mechanical property;nanocomposites
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