Journal of Adhesion and Interface (접착 및 계면)

The Society of Adhesion and Interface, Korea (한국접착및계면학회)
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Study on Physical Properties of Synthesized Water-based Tackifier According to Acrylic Monomer Structure and Content

아크릴 단량체 구조 및 조성에 따른 수계 점착부여제의 합성 및 물성 연구

  • Kim, Se-Jin (Korea Institute of Footwear & Leather Technology) ;
  • Baek, Lan-Ji (Korea Institute of Footwear & Leather Technology) ;
  • Jeong, Boo-Young (Korea Institute of Footwear & Leather Technology) ;
  • Huh, PilHo (Department of Applied Chemistry and Engineering, Pusan national university) ;
  • Cheon, JungMi (Korea Institute of Footwear & Leather Technology) ;
  • Chun, Jae-Hwan (Korea Institute of Footwear & Leather Technology)
  • Received : 2022.02.04
  • Accepted : 2022.04.13
  • Published : 2022.06.30
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Abstract

There has been a growing demand for water based-type PSA due to environmental regulations for solvent-type PSA. And accordingly, there is a growing expectation as well for tackifiers used to compensate for the problem of deterioration of physical properties. Therefore, In this study, water-based tackifiers were synthesized by changing the contents of hard and functional acrylic monomers CHMA, IBOA, and AA. And these were added to the pressure-sensitive adhesive at 10 phr and their physical properties were compared. Tackiness slightly decreased as CHMA increased and IBOA decreased. Since the intermolecular bonding force increased due to the increase in AA content, the lower the AA content showed better results. Peel strength increased as the tackifiers were added because the fluidity of the polymer chain increased. And higher AA content showed better results because more hydrogen bonds were formed. The holding power tended to decrease as CHMA increased because the content of IBOA relatively decreased which has a large influence on the holding power. And higher AA content showed better results.

최근 환경 규제로 인해 용제형 대신 수계형 점착제의 수요가 커지고 있으며, 물성 저하의 문제점을 보완하기 위해 쓰이는 점착부여제에도 그만큼 기대하는 요구가 커지고 있다. 따라서 본 연구에서는 하드 및 기능성 아크릴 단량체인 CHMA, IBOA, AA의 조성에 따라 수계 아크릴 점착 부여제를 합성하고, 이를 10 phr의 함량으로 점착제에 투입하여 점착부여제의 조성에 따른 물리적 특성을 비교하였다. 초기 점착력은 CHMA가 증가하고 IBOA가 감소함에 따라 감소하였고, AA 함량 증가로 인해 분자간의 결합력이 증가하였기 때문에 AA 함량이 낮을수록 더 좋은 결과를 나타내었다. 점착력은 점착부여제를 첨가함에 따라 고분자 사슬의 유동성을 높여 증가하는 결과를 나타내었으며, AA 함량이 높을수록 수소 결합이 더 많이 이루어짐으로써 더 좋은 결과를 나타내었다. 내열 유지력은 CHMA가 증가할수록 상대적으로 내열 유지력에 큰 영향을 미치는 IBOA의 함량이 감소하였기 때문에 전체적으로 감소하는 결과를 나타내었고, AA 함량이 높은 시리즈가 더 좋은 결과를 나타내었다.

Keywords

Acknowledgement

본 연구는 2022년도 산업통상자원부 소재부품기술개발사업(과제번호: 20010915)의 지원에 의해 수행되었으며, 이에 감사드립니다.

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