알칼리 용해성 회합 증점제의 합성 및 유성학적 물성에 관한 연구

서은현; 이덕연; 이종길; 김중현

Journal of the Korean Industrial and Engineering Chemistry, Vol.8, No.4, 673-678, August, 1997

Export Citation

알칼리 용해성 회합 증점제의 합성 및 유성학적 물성에 관한 연구

Preparation and Rheological Properties of Alkali-Soluble Associative Thickener

서은현, 이덕연, 이종길, 김중현

초록

본 연구에서는 associative macromonomer로서 비이온성 vinyl surfactant ester(alkyloxy poly(ethyleneoxy)_n ethyl acrylate)[VSE]를 사용한 유화중합을 통하여 회합형 아크릴 증점제를 합성하고, 유성학적 물성을 고찰하였다. VSE의 소수성 말단기의 탄소수, ethoxylation 정도에 따라 회합형 증점제의 증점제의 증점효과가 크게 영향을 받았다. VSE의 종류를 고정하고, 공단량체 조성을 달리하여 제조한 아크릴 회합형 증점제의 수용액 점도 병화를 고찰한 결과, VSE의 양이 늘어날수록 증점효과가 증가하였다. 이것은 VSE의 소수성 말단기의 상호작용에 의한 회합 증점 메카니즘에 의해 증점효과가 향상되었기 때문이다. 또한 사슬전이제에 의한 분자량이 감소할수록 hydrodynamic volume이 작아져 증점효과가 감소하였다.

Associative acrylic thickeners were prepared by emulsion copolymerization using nonionic viny1 surfactant esters as an associative macromonomer and their rheological properties were investigated. The thickening efficiency was shown to depend on the chain length of therminal hydrophobe and degree of ethoxylation of VSE. increasing the content of VSE enhanced the efficiency of the resulting polymers as a thickener. It was attributed to the intermolecular association of terminal hydrophobes of associative thickener in aqueous solution. The chain transfer agent caused to reduce the molecular weight of associative thickener, resulted in decrease of thickening efficiency.

[References]

Schwab FG, "Water-Soluble Polymers," Advances in Chemistry Ser. 213, ACS, 375 (1986)
Hall JE, J. Coat. Technol., 58(738), 65 (1986)
Glass JE, "The Influence of Associative Thickeners and Rheology on Coatings Performance," North Dakota State University (1983)
Glass JE, Fernando RH, Oil Coulour Chem. Assoc., 67, 256 (1984)
Glass JE, "Polymers in Aqueous Media," Advances in Chemistry Ser. 223, ACS, 457 (1989)
Schulz DN, Glass JE, ACS Symp. Ser., 462, 2 (1991)
Schaller EJ, Surf. Coat. Aust., 22(10), 6 (1985)
Chang CJ, Stevens TE, U.S. Patent, 4,429,097 (1984)
Chang CJ, Stevens TE, U.S. Patent, 4,663,385 (1987)
Emmons WD, Stevens TE, U.S. Patent, 4,079,028 (1978)
Emmons WD, Stevens TE, U.S. Patent, 4,395,524 (1983)
Evani S, Laik RH, U.S. Patent, 3,779,970 (1973)
Evani S, Laik RH, Fiero TH, U.S. Patent, 3,794,608 (1974)
Sonnabend IF, U.S. Patent, 4,384,096 (1983)

[Referenced By]

[1] Schwab FG, "Water-Soluble Polymers," Advances in Chemistry Ser. 213, ACS, 375 (1986)

[2] Hall JE, J. Coat. Technol., 58(738), 65 (1986)

[3] Glass JE, "The Influence of Associative Thickeners and Rheology on Coatings Performance," North Dakota State University (1983)

[4] Glass JE, Fernando RH, Oil Coulour Chem. Assoc., 67, 256 (1984)

[5] Glass JE, "Polymers in Aqueous Media," Advances in Chemistry Ser. 223, ACS, 457 (1989)

[6] Schulz DN, Glass JE, ACS Symp. Ser., 462, 2 (1991)

[7] Schaller EJ, Surf. Coat. Aust., 22(10), 6 (1985)

[8] Chang CJ, Stevens TE, U.S. Patent, 4,429,097 (1984)

[9] Chang CJ, Stevens TE, U.S. Patent, 4,663,385 (1987)

[10] Emmons WD, Stevens TE, U.S. Patent, 4,079,028 (1978)

[11] Emmons WD, Stevens TE, U.S. Patent, 4,395,524 (1983)

[12] Evani S, Laik RH, U.S. Patent, 3,779,970 (1973)

[13] Evani S, Laik RH, Fiero TH, U.S. Patent, 3,794,608 (1974)

[14] Sonnabend IF, U.S. Patent, 4,384,096 (1983)