박리강도와 내수성이 향상된 친환경적인 수성 점착제 제조를 위해 Tg가 상온에 가깝도록 아크릴 모노머인 methyl methacrylate(MMA), butyl acrylate(BA), methacrylic acid(MAA)의 비율을 조절하고 ammonium persulfate를 개시제로 이용하여 아크릴 공중합체(Acrylic copolymer)를 유화 중합하여 아크릴 에멀젼 점착제를 제조하고 평가하였다. MMA:BA:MAA를 55.2:43.5:1.3의 mole 비율로 합성한 결과, GPC와 입도분석으로 아크릴 공중합체 에멀젼이 합성된 것을 확인하였으며 휘발성 유기물(VOCs)도 검출되지 않았다. 이론적 Tg는 18.1℃이며, 피착재로써 폴리우레탄 폼, 폴리프로필렌 폼, 폴리프로필렌을 적용하여 초기, 최종, 침수 후 접착력을 평가한 결과 박리강도가 기존 제품에 비해 향상되었음을 확인하였다.
In order to manufacture an eco-friendly aqueous adhesive with improved peel strength and water resistance, we adjusted the ratio of acrylic monomers methyl methacrylate (MMA), butyl acrylate (BA), and methacrylic acid (MAA) so that Tg is close to room temperature, and used ammonium persulfate as an initiator. Then, an acrylic copolymer was emulsion-polymerized to prepare and evaluate an acrylic emulsion adhesive. As a result of synthesizing MMA:BA:MAA in a mole ratio of 55.2:43.5:1.3, it was confirmed that an acrylic copolymer emulsion was synthesized by GPC and particle size analysis, and volatile organic substances(VOCs) were not detected. Theoretical Tg is 18.1°C, close to room temperature, and as a result of evaluating the initial, final, and post-immersion adhesion by applying polyurethane foam, polyethylene foam, and polypropylene as adherends, it was confirmed that the peel strength was improved compared to existing products.