환경중에서 분해성을 갖는 폴리메타크릴레이트가 그라프트된 전분 필름

임대영; 임승순

Polymer(Korea), Vol.16, No.4, 478-487, July, 1992

Export Citation

환경중에서 분해성을 갖는 폴리메타크릴레이트가 그라프트된 전분 필름

Environmentally Degradable Starch-g-Poly(methyl acrylate) Film

임대영, 임승순

초록

재생가능한 천연고분자인, polysaccharides 계통의 전분과 메틸아크릴레이트(methyl acrylate, MA)를 그라프트 공중합시켜 자연 환경중에서 분해성을 갖는 새로운 물질을 제조하였다. 그라프트 공중합은 개시제로서 ceric ammonium nitrate(CAN)를 사용하여 쉽게 이루어졌으면, add-on(%)이 최대 52% 정도인 공중합체를 얻을 수 있었다. Starch-g-poly(methyl acrylate)(S-g-PMA) 필름을 여러 환경인자들, 즉 수분, 자외선, 미생물에 노출시켜 그 영향에 대해서 연구하였다. 수중에 침지된 S-g-PMA 필름은 내부로 침투된 수분의 분자간 slipping 및 가소화작용으로 매우 약해졌으며 자외선에 최대 200시간 동안 조사시킨 필름들은 그라프트된 MA중합체의 분해 및 전분의 노화헌상에 의하여 탁한 황색으로 변하였으며, 필름표면에 심한균열이 발생하여 매우 취약해졌다. 또한 S-g-PMA 필름들은 습한 환경에서 Aspergillus niger에 의해 쉽게 분해됨을 알 수 있었다. 이 고분자 물질은 환경중에서 분해성을 갖는 재료로 응용될 수 있을 것이다.

A new environmentally degradable film was prepared by graft copolymerization of methyl acrylate onto corn starch, renewable polysaccharide. Graft copolymer was readily achieved by using a ceric ammonium nitrate as a catalyst. Influences of various environmental factors such as water, UV, and microorganism on starch graft poly(methyl acrylate) (S-g-PMA) films were studied. The S-g-PMA films immersed in water for 25 hours were awfully weakened, and which was partly due to the intermolecular slippage and plasticization of water. UV-exposed films for 200 hours were, due to the photodegradation of grafted poly(methyl acrylate)(PMA), the retrogradation of starch, and the cracking of surface of S-g-PMA film yellowed and weakened. S-g-PMA films were susceptible to microbial attack by Aspergillus niger under wet surroundings. This material may have applications as environmentally degradable films.

[References]

Griffin GJL, Adv. Chem. Ser., 134, 159 (1974)
Griffin GJL, U.S. Patent, 4,016,117 (1977)
Griffin GJL, U.K. Patent, 1,485,883 (1977)
Otey FH, Westhoff RP, Russell CR, Ind. Eng. Chem. Prod. Res. Dev., 16, 305 (1977)
Otey FH, Westhoff RP, Doane WM, Ind. Eng. Chem. Prod. Res. Dev., 19, 592 (1977)
Per HR, Koch H, Staerke, 42, 123 (1990)
Otey FH, Mark AM, Mehltretter L, Russell R, Ind. Eng. Chem. Prod. Res. Dev., 13, 90 (1974)
Wittwer F, Tomka I, European Patent, 0.118,240 A2 (1984)
Wittwer F, Tomka I, DOS 7,12,029 A1 (1987)
Bagley EB, Fanta GF, Burr RC, Doane WM, Russell CR, Polym. Eng. Sci., 17, 311 (1977)
Dennenberg RJ, Bothast RJ, Abbott TP, J. Appl. Polym. Sci., 22, 459 (1978)
Carraher CE, Sperling LH, "Starch-g-poly(methyl acrylate) effects of graft level and molecular weight on tensile properties," in Polymer Appliciations of Renewable Resource Materials, Eds., p. 55, Plenum Press, New York (1989)
Dennenberg RJ, Abbott TP, J. Polym. Sci. C: Polym. Lett., 14, 693 (1976)
Fanta GF, Doane WM, "Grafted Starches," in Modified Starches: Properties and Uses, ed. by O.B. Wurzburg, Chap. 10, CRC Press (1986)
"Photodegradation and Photo-oxidation of Particular Polymers," in Photodegradation, Photo-Oxidation and Photostabilization of Polymers-Principles and Applications, ed. by R. Ranby, p. 154, John Wiley & Sons (1973)
Lloyd NE, Kirst LC, Cereal. Chem., 40(3), 154 (1963)
Mark HF, Othmer DF, Kirk-Othmer Encyclopedia of Chemical Technology, 3rd ed., Vol. 1, Wiley-Interscience Publications (1984)

[Referenced By]

[1] Griffin GJL, Adv. Chem. Ser., 134, 159 (1974)

[2] Griffin GJL, U.S. Patent, 4,016,117 (1977)

[3] Griffin GJL, U.K. Patent, 1,485,883 (1977)

[4] Otey FH, Westhoff RP, Russell CR, Ind. Eng. Chem. Prod. Res. Dev., 16, 305 (1977)

[5] Otey FH, Westhoff RP, Doane WM, Ind. Eng. Chem. Prod. Res. Dev., 19, 592 (1977)

[6] Per HR, Koch H, Staerke, 42, 123 (1990)

[7] Otey FH, Mark AM, Mehltretter L, Russell R, Ind. Eng. Chem. Prod. Res. Dev., 13, 90 (1974)

[8] Wittwer F, Tomka I, European Patent, 0.118,240 A2 (1984)

[9] Wittwer F, Tomka I, DOS 7,12,029 A1 (1987)

[10] Bagley EB, Fanta GF, Burr RC, Doane WM, Russell CR, Polym. Eng. Sci., 17, 311 (1977)

[11] Dennenberg RJ, Bothast RJ, Abbott TP, J. Appl. Polym. Sci., 22, 459 (1978)

[12] Carraher CE, Sperling LH, "Starch-g-poly(methyl acrylate) effects of graft level and molecular weight on tensile properties," in Polymer Appliciations of Renewable Resource Materials, Eds., p. 55, Plenum Press, New York (1989)

[13] Dennenberg RJ, Abbott TP, J. Polym. Sci. C: Polym. Lett., 14, 693 (1976)

[14] Fanta GF, Doane WM, "Grafted Starches," in Modified Starches: Properties and Uses, ed. by O.B. Wurzburg, Chap. 10, CRC Press (1986)

[15] "Photodegradation and Photo-oxidation of Particular Polymers," in Photodegradation, Photo-Oxidation and Photostabilization of Polymers-Principles and Applications, ed. by R. Ranby, p. 154, John Wiley & Sons (1973)

[16] Lloyd NE, Kirst LC, Cereal. Chem., 40(3), 154 (1963)

[17] Mark HF, Othmer DF, Kirk-Othmer Encyclopedia of Chemical Technology, 3rd ed., Vol. 1, Wiley-Interscience Publications (1984)