Relationship between Structure and Performance of Polyacrylates Used as Chelator in Detergents

Yong-Mei Xia; Heon-young Cho; Yun Fang; Xiao-ya Liou; Jung-Mok Suh

Journal of Industrial and Engineering Chemistry, Vol.8, No.2, 108-113, March, 2002

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Relationship between Structure and Performance of Polyacrylates Used as Chelator in Detergents

Yong-Mei Xia, Heon-young Cho^{1, †}, Yun Fang, Xiao-ya Liou, and Jung-Mok Suh¹

School of Chemical and Material Engineering, Southern Yangzi University, Wuxi 214036, China
¹School of Chemical Engineering, PRC/NMR, Kongju National University, Kongju 314-701, Korea

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The effects of molecular weight and compositions of polyacrylates, i.e. sodium homopolyacrylates and modified polyacrylates on their tolerance to calcium ion (CaV), dispersancy and flocculence were investigated. The optimum formulations of phosphate-free detergent powder containing the polymers as substitute of phosphate in detergent were obtained by orthogonal test. By increasing the molecular weight of homopolyacrylate in testing range, their CaV are enhanced dramatically and the dispersancy are decreased but still are better than that of sodium tripolyphosphate (STPP). The modified polyacrylates were copolymerized with maleic anhydride (MA), methyl acrylate(AM) and acrylic acid (AA) with different compositions. The composition of copolymer affects its CaV slightly. By increasing the molecular weight in testing range, their CaV are enhanced moderately and the dispersancy of copolymer are slightly decreased. The flocculence of the polymer is enhanced by increasing the molecular weight, and is not related to type of the polymer but CaV of the polymer.

Keywords:polyacrylate;tolerance to calcium ion;dispersancy;flocculence;substitute of phosphate

[References]

Bertleff W, Numann P, Baur R, Kiessling D, J. Surf. Deter., 1, 419 (1998)
Yan XF, Zhang SX, China Surf. Deter. Cosm., 6, 9 (1997)
Upadck H, Kottwitz B, Schreck B, Tenside, 33(5), 385 (1996)
Amjad Z, Hooley JP, Tenside, 31(1), 12 (1994)
Nagarajan MK, Paine HL, J. Amer. Oil Chem. Soc., 61(9), 1475 (1984)
Wei GS, Yu GH, China Surf. Deter. Cosm., 7, 41 (1998)
Morgenthaler WW, Detergence, Theory and Test Methods, Surfactant Science Series, Part II, Marcel Dekker Inc. New York, 5, 475
Amjad Z, Brecksville J, Tenside, 36(3), 162 (1999)
Zhou HY, Xia YM, China Surf. Deter. Cosm., 4, 10 (1998)
Kawaguchi M, Hayakawa K, Takahashi A, Polym. J., 12(4), 265 (1980)
Park SH, "Comtempolary Experimental Planning Methods" Daeyoungsa, 501 (1984)

[Related Articles]

[1] Bertleff W, Numann P, Baur R, Kiessling D, J. Surf. Deter., 1, 419 (1998)

[2] Yan XF, Zhang SX, China Surf. Deter. Cosm., 6, 9 (1997)

[3] Upadck H, Kottwitz B, Schreck B, Tenside, 33(5), 385 (1996)

[4] Amjad Z, Hooley JP, Tenside, 31(1), 12 (1994)

[5] Nagarajan MK, Paine HL, J. Amer. Oil Chem. Soc., 61(9), 1475 (1984)

[6] Wei GS, Yu GH, China Surf. Deter. Cosm., 7, 41 (1998)

[7] Morgenthaler WW, Detergence, Theory and Test Methods, Surfactant Science Series, Part II, Marcel Dekker Inc. New York, 5, 475

[8] Amjad Z, Brecksville J, Tenside, 36(3), 162 (1999)

[9] Zhou HY, Xia YM, China Surf. Deter. Cosm., 4, 10 (1998)

[10] Kawaguchi M, Hayakawa K, Takahashi A, Polym. J., 12(4), 265 (1980)

[11] Park SH, "Comtempolary Experimental Planning Methods" Daeyoungsa, 501 (1984)