비닐 아세테이트/알킬메타크릴레이트계 공중합과 등온건조속도

김민성; 설수덕; Min Sung Kim; Soo Duk Seul

Polymer(Korea), Vol.33, No.3, 230-236, May, 2009

Export Citation

비닐 아세테이트/알킬메타크릴레이트계 공중합과 등온건조속도

Isothermal Drying Rate and Copolymerization of Vinyl Acetate/Alkyl Methacrylates

김민성, 설수덕 ^†

동아대학교 공과대학 화학공학과

Min Sung Kim, and Soo Duk Seul^†

Department of Chemical Engineering, Dong-A University, Busan 604-714, Korea

E-mail:

초록

비닐 아세테이트/알킬메타크릴레이트계 에멀젼 공중합에서 반응온도, 개시제의 종류와 농도, 보호콜로이드인 PVA의 종류와 농도, 공단량체인 MMA, EMA의 조성비를 변화시키며 중합하였다. 제조된 공중합체인 poly(vinyl acetate-co-methyl methacrylate)(PVAc/PMMA), poly(vinyl acetate-co-ethyl methacrylate)(PVAc/PEMA)를 수분 측정기를 사용하여 100, 130, 150, 180, 200 ℃에서 등온건조 시키고, 그 건조 특성을 고찰하여 다음과 같은 결론을 얻었다. 등온법으로 얻은 중합체 고형화 과정의 활성화 에너지는 PVAc/PMMA> PVAc/PEMA>PVAc의 순으로 공단량체의 곁사슬의 탄소수 증가에 따라 감소하였다. 접착박리강도는 동일한 조성의 공중합체에서 보호콜로이드 함량에 비례하여 증가하였고, 내수 접착박리강도는 최적의 보호콜로이드 함량에서 공단량체의 종류와 함량에 따라 PVAc/PMMA>PVAc/PEMA>PVAc 순이다.

Water soluble vinyl acetate/alkyl methacrylate copolymers were prepared by the emulsion copolymerization of vinyl acetate and various methacrylates such as methyl methacrylate (MMA) and ethyl methacrylate (EMA). Potassium persulfate (KPS) and ammonium persulfate (APS) were used as an initiator. Poly(vinyl alcohol) (PVA) was used as a protective colloid. The drying characteristics of the prepared poly(vinyl acetate-co-methyl methacrylate) (PVAc/PMMA), poly(vinyl acetate-co-ethyl methacrylate) (PVAc/PEMA) were studied using moisture meter at the temperature between 100 and 200 ℃. The significant results are described as follows. The activation energy of the isothermal drying process of the copolymers has the order of PVAc/PMMA> PVAc/PEMA> PVAc.

Keywords:vinyl acetate;alkyl methacrylate;isothermal drying rate;copolymerization.

[References]

Korea Institute for Industrial Economics & Trade, Tech. Adhesive, Sep. (1983)
Park MH, Kim JH, Polymer Sience and Technology, 6, 596 (1995)
Eckersley ST, Rudin A, J. Coat.Technol., 62, 89 (1990)
Lim JC, Kim BS, Choi SY, Polym. Sci. Technol., 6(3), 213 (1995)
Yildirim Erbil H, Vinyl acetate Emulsion Polymerization and Copolymerization with Acrylic Monomers, p 165-166 (2000)
Lee SY, Sim HS, Shin YJ, Polymer(Korea), 19, 83 (1995)
Lee SY, Shin YJ, Polym.(Korea), 21(6), 885 (1997)
Lee SY, Park LS, Polym.(Korea), 24(5), 579 (2000)
Lim JK, Lee SR, Park DJ, Seul SD, Theor. Appl. Chem. Eng., 8, 5438 (2002)
Kwon JB, Lee NW, Seul SD, J. KIIS, 18, 81 (2003)
Hong SJ, Oh SC, Lee HP, Kim HT, Yoo KO, HWAHAK KONGHAK, 37(4), 515 (1999)
MacCallum JR, Tanner, Eur. Polym. J., 6, 913 (1970)
Arrhenius S, Z. Phys, Chem., 4, 226 (1889)
Cleland RL, Stockmayer WH, Polym. Sci., 17, 473 (1995)
Seul SD, Kim DK, Park SW, HWAHAK KONGHAK, 25(3), 237 (1987)

[Related Articles]

[1] Korea Institute for Industrial Economics & Trade, Tech. Adhesive, Sep. (1983)

[2] Park MH, Kim JH, Polymer Sience and Technology, 6, 596 (1995)

[3] Eckersley ST, Rudin A, J. Coat.Technol., 62, 89 (1990)

[4] Lim JC, Kim BS, Choi SY, Polym. Sci. Technol., 6(3), 213 (1995)

[5] Yildirim Erbil H, Vinyl acetate Emulsion Polymerization and Copolymerization with Acrylic Monomers, p 165-166 (2000)

[6] Lee SY, Sim HS, Shin YJ, Polymer(Korea), 19, 83 (1995)

[7] Lee SY, Shin YJ, Polym.(Korea), 21(6), 885 (1997)

[8] Lee SY, Park LS, Polym.(Korea), 24(5), 579 (2000)

[9] Lim JK, Lee SR, Park DJ, Seul SD, Theor. Appl. Chem. Eng., 8, 5438 (2002)

[10] Kwon JB, Lee NW, Seul SD, J. KIIS, 18, 81 (2003)

[11] Hong SJ, Oh SC, Lee HP, Kim HT, Yoo KO, HWAHAK KONGHAK, 37(4), 515 (1999)

[12] MacCallum JR, Tanner, Eur. Polym. J., 6, 913 (1970)

[13] Arrhenius S, Z. Phys, Chem., 4, 226 (1889)

[14] Cleland RL, Stockmayer WH, Polym. Sci., 17, 473 (1995)

[15] Seul SD, Kim DK, Park SW, HWAHAK KONGHAK, 25(3), 237 (1987)