Article
  • Adhesive Properties of Acrylic Emulsion Pressure Sensitive Adhesives with Polymeric Emulsifier
  • Park MC, Lee MC
  • 고분자 유화제를 이용한 수성 아크릴 에멀션 점착제의 접착 물성
  • 박명철, 이명천
Abstract
A polymeric emulsifier was synthesized by solution polymerization with 2-ethylhexyl acrylate, n-butyl acrylate, and acrylic acid. A series of polymeric emulsifier have been used in the emulsion copolymerization of 2-ethylhexyl acrylate and n-butyl acrylate. The size of the synthesized latex particles was around 145 nm and its distribution was very narrow. Emulsion with polymeric emusifier showed no coagulum after 7 cycles of freeze-thaw test, while the emulsion with traditional emulsifier exhibited coagulum after 2 cycles. The adhesion tests showed that the initial tackiness and peel strength decreased as the molecular weight and acrylic acid content of polymeric emulsifier increased, whereas the holding power increased.

고분자 유화제를 2-에틸헥실 아크릴레이트와 n-부틸 아크릴레이트 그리고 아크릴산 단량체를 사용하여 단량체 조성과 분자량을 변화시켜 용액중합에 의해서 합성하였다. 합성된 고분자 유화제를 이용하여 반연속식 유화중합을 통해 수성 아크릴 에멀션 점착제를 제조하였다. 그 결과, 입자크기는 약 145 nm 정도로 전형적인 유화제에 비해 상대적으로 작게 나타났고, 입자크기분포도는 단분산적 형태를 보였다. 에멀션을 이용한 동결-해빙 시험결과 기존 유화제를 사용한 경우 2회 반복 후 응집이 발견되었으나, 고분자 유화제의 경우 7회 반복 후에도 응집이 보이지 않아 저장안정성이 매우 우수함을 나타냈다. 접착시험 결과 초기점착력과 점착력은 고분자 유화제의 분자량이 증가함에 따라 또한 아크릴산 함량이 높을수록 감소하는 경향을 나타내었고, 반면 유지력은 증가하였다.

Keywords: pressure sensitive adhesive; polymeric emulsifier; tack; holding power; peel

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2003; 27(6): 596-602

    Published online Nov 25, 2003

  • Received on Jul 31, 2003
  • Accepted on Nov 5, 2003