본 연구에서는 수계형 아크릴 점착제의 성능 및 점착 물성을 향상시키기 위해 분자량 조절제인 1-dodecanethiol(n-DM)의 함량이 다른 수계 아크릴 점착부여제를 합성하였으며 수계 아크릴 점착부여제의 투입량에 따른 물성 변화 확인을 위해 수분산성 아크릴 에멀젼에 수계 아크릴 점착부여제를 10/20/30 phr로 투입하여 물성을 측정하였다. 합성된 수계 아크릴 점착부여제의 분자량 및 유리전이온도(Tg)는 n-DM의 함량이 증가함에 따라 감소하는 경향을 나타내었다. 수분산성 아크릴 에멀젼에 수계 아크릴 점착부여제를 첨가하였을 때의 점착력 및 내열 유지력은 증가하였으며 수계 아크릴 점착부여제를 10 phr 또는 20 phr로 투입하였을 때에 가장 우수한 값을 나타내었다.
In this study, water-based acrylic tackifier with different contents of 1-dodecanethiol(n-DM), a chain transfer agent(CTA), were synthesized to improve the performance and adhesive properties of water-based acrylic pressure sensitive adhesive(PSA). In order to investigate the change in physical properties according to the amount of water-based acrylic tackifier added, 10/20/30 phr of water-based acrylic tackifier was added to the water-borne acrylic emulsion to measure the physical properties. The molecular weight and glass transition temperature(Tg) of the synthesized water-based acrylic tackifier tended to decrease as the content of n-DM increased. When a water-based acrylic tackifier was added to the water-borne acrylic emulsion, the peel strength and heat-resistance were increased. Also, when the water-based acrylic tackifiers were added at 10 phr or 20 phr, the best value was shown.