Special Issue
  • Development and Synthesis of Hybrid Acrylic Pressure-Sensitive Adhesives
  • Dal Ho Lee*, Nam Gyu Yang**, Doo Kyung Moon*, **†

  • * Carbon-Neutral and Renewable Energy, Konkuk University
    ** Department of Chemical Engineering, Konkuk University

  • 아크릴계 하이브리드 감압성 점착제의 합성
  • 이달호* · 양남규** · 문두경*, **†

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this study, a hybrid pressure-sensitive adhesive (PSA) was developed by introducing an epoxy oligomer to enhance the mechanical strength and heat resistance of an acrylic-based PSA. Octyl acrylate (OA), 2-ethylhexyl methacrylate (EHMA), and butyl acrylate (BA) were each introduced as soft monomers, while hydroxyethyl methacrylate (HEMA) and glycidyl methacrylate (GMA) were fixed as functional monomers. A ternary copolymer was synthesized via free radical polymerization. FT-IR analysis confirmed the polymerization, as the characteristic C=C double bond peak near 1630 cm-1 was absent. Gel permeation chromatography (GPC) revealed that all samples had a polydispersity index (PDI) in the range of 2.1 to 2.2. The introduction of GMA into the polymer backbone was found to contribute to the formation of a crosslinked structure, thereby enhancing the cohesion and heat resistance of the adhesive.


본 연구에서는 아크릴 기반 감압성 점착제(PSA)의 기계적 강도와 내열성을 향상시키기 위해 에폭시 올리고머를 도입한 하이브리드 점착제를 개발하였다. 옥틸 아크릴레이트(OA), 2-에틸헥실 메타크릴레이트(EHMA), 그리고 부틸 아크릴레이트(BA)를 soft 단량체로 각각 도입하고, 하이드록시에틸 메타크릴레이트(HEMA)와 글리시딜 메타크릴레이트(GMA)를 기능성 단량체로 고정하여 자유 라디칼 중합을 통해 3원 공중합체를 합성하였다. 중합체는 FT-IR 분석 결과 1630 cm-1 부근의 이중결합(C=C) 피크가 나타나지 않아 완전히 중합된 것을 확인하였다. GPC를 통한 분자량 분석 결과 모든 시료의 분산도(PDI)는 2.1~2.2의 분포를 나타냈다. 고분자 주쇄에 GMA의 도입으로 인해 가교 구조 형성이 점착제의 응집력과 내열성을 향상시키는데 기여함을 확인하였다.


Keywords: 감압성 점착제(Pressure-sensitive adhesive), 에폭시 점착제(Epoxy adhesive), 아크릴 점착제(Acryl adhesive), 자유 라디칼 중합(Free radical polymerization)

This Article

Correspondence to

  • Doo Kyung Moon
  • * Carbon-Neutral and Renewable Energy, Konkuk University
    ** Department of Chemical Engineering, Konkuk University

  • E-mail: dkmoon@konkuk.ac.kr