Diels-Alder 반응 기반의 자가치유기능이 있는 고분자 물질을 함유한 마이크로 캡슐의 제조 및 이의 자가치유 특성

이하영; 김효진; 차상호; 이경진; Ha-Young Lee; Hyojin Kim; Sang-Ho Cha; Kyung Jin Lee

Polymer(Korea), Vol.42, No.5, 857-865, September, 2018

DOI10.7317/pk.2018.42.5.857 Export Citation

Diels-Alder 반응 기반의 자가치유기능이 있는 고분자 물질을 함유한 마이크로 캡슐의 제조 및 이의 자가치유 특성

Preparation and Characterization of Microcapsules Containing Diels-Alder Reaction-based Self-healable Polymeric Materials and Their Self-healing Property

이하영, 김효진¹, 차상호^†, 이경진^{1, †}

경기대학교 화학공학과
¹충남대학교 응용화학공학과

Ha-Young Lee, Hyojin Kim¹, Sang-Ho Cha^†, and Kyung Jin Lee^{1, †}

Department of Chemical Engineering, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Korea
¹Department of Chemical Engineering and Applied Chemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea

E-mail:,

초록

본 연구에서는 Diels-Alder 반응 기반의 자가치유능을 가지는 물질을 포함하는 마이크로 캡슐 제조와 이의 자가치유 특성에 관하여 체계적인 분석을 진행하였다. 자가치유 물질을 포함하는 마이크로 캡슐이 고분자 복합체에 적용되었을 때 자가치유 효과를 발현할 수 있도록 푸란계 고분자 합성과정에서 poly(ethylene glycol) 사슬을 도입하여 유동성을 가질 수 있도록 하였다. 마이크로 캡슐 내부에 합성된 푸란계 고분자와 비스말레이미드를 각각 도입하였으며, 해당물질들이 캡슐 내부에 성공적으로 도입되었는지 확인하였다. 또한 합성조건과 마이크로 캡슐의 기계적 물성과의 상관관계를 규명하였으며, 마이크로 캡슐이 분산된 poly(methyl methacrylate) (PMMA) 기반의 고분자 복합체에 균열을 발생시킨 후, 마이크로 캡슐에서 유출된 물질에 의한 자기치유능을 확인하였다. 이는 마이크로 캡슐내에 포함된 푸란계 고분자가 가지고 있는 유동성에 의한 결과이며, 이러한 결과를 바탕으로 본 연구에서 제조된 푸란계 고분자가 함유된 마이크로 캡슐은 자가치유 특성을 가지고 있음을 확인하였다.

In this study, the microcapsules containing self-healable polymeric materials based on the Diels-Alder reaction were prepared and the systematic studies about the self-healing property of the microcapsules were performed. Poly(ethylene glycol) chains were applied in the polymerization of furan-polymer to increase the mobility of self-healable materials. The furan-polymer and bismaleimide were introduced into the core of microcapsule, respectively, and these were successfully confirmed using dye modified materials. The relationship between the synthetic conditions and mechanical properties of microcapules was clarified by measurement of capsule strength, and the self-healing ability of macrocapsules in the PMMA-based polymeric composite was confirmed by the release of core materials by OM, SEM and FTIR. These were considered to be originated from the mobility of furan-polymer in the core of microcapsules. Based on these results, it was confirmed that the microcapsules containing the self-healable furan-polymer in this study have the self-healing properties.

Keywords:self-healing;microcapsule;polyurethane;Diels-Alder reaction;mobility

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[20] Lee HY, Cha SH, Macromol. Res., 25(6), 640 (2017)