微波溶剂法合成天冬氨酸-谷氨酸共聚物研究

CIESC Journal

• RESEARCH NOTES • 上一篇

微波溶剂法合成天冬氨酸-谷氨酸共聚物研究

张玉玲; 黄君礼; 程志辉; 杨士林

School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-06-28 发布日期:2007-06-28
通讯作者: 张玉玲

Microwave-assisted synthesis of modified polyaspartic acid in solvent

ZHANG Yuling; HUANG Junli; CHENG Zhihui; YANG Shilin

School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

Received:1900-01-01 Revised:1900-01-01 Online:2007-06-28 Published:2007-06-28
Contact: ZHANG Yuling

摘要/Abstract

摘要： Polyaspartic acid (PASP) is suitable for the inhibition of scale deposition from water. To
enhance its inhibition efficiency, PASP was modified by reacting aspartic acid (Asp) with
glutamic acid (Glu) to provide Asp-Glu copolymer under microwave irradiation. The influence
of reaction parameters on conversion, molecular weight and inhibition of CaCO3
precipitation was investigated Infra-red. (IR), 1H nuclear magnetic resonance (1H NMR) and
13C nuclear magnetic resonance (13C NMR) spectroscopies were used to characterize the
copolymer. The results show that copolymerization of aspartic acid and glutamic acid is
catalyzed by a small amount of phosphorous acid (H3PO4) in solvent, the product conversion
is 98.05% under the following conditions: the molar ratio of glutamic acid to reactant
[Glu/(Asp＋Glu)] is 0.3 and that of catalyst (Cat) to reactant [Cat/(Glu+Asp)] is 0.05
(0.65ml H3PO4), the volume of solvent dimethylformamide is 16ml, the microwave power used
is 720W and the reaction for 3 min. The weight average molecular weight of copolymer
synthesized under these conditions is 2709 and the inhi-bition rate for CaCO3 is 97.75%.

关键词: microwave irradiation;aspartic acid;glutamic acid;copolymer;conversion ratio;scale inhibition

Abstract: Polyaspartic acid (PASP) is suitable for the inhibition of scale deposition from water. To
enhance its inhibition efficiency, PASP was modified by reacting aspartic acid (Asp) with
glutamic acid (Glu) to provide Asp-Glu copolymer under microwave irradiation. The influence
of reaction parameters on conversion, molecular weight and inhibition of CaCO3
precipitation was investigated Infra-red. (IR), 1H nuclear magnetic resonance (1H NMR) and
13C nuclear magnetic resonance (13C NMR) spectroscopies were used to characterize the
copolymer. The results show that copolymerization of aspartic acid and glutamic acid is
catalyzed by a small amount of phosphorous acid (H3PO4) in solvent, the product conversion
is 98.05% under the following conditions: the molar ratio of glutamic acid to reactant
[Glu/(Asp＋Glu)] is 0.3 and that of catalyst (Cat) to reactant [Cat/(Glu+Asp)] is 0.05
(0.65ml H3PO4), the volume of solvent dimethylformamide is 16ml, the microwave power used
is 720W and the reaction for 3 min. The weight average molecular weight of copolymer
synthesized under these conditions is 2709 and the inhi-bition rate for CaCO3 is 97.75%.

Key words: microwave irradiation, aspartic acid, glutamic acid, copolymer, conversion ratio, scale inhibition

张玉玲, 黄君礼, 程志辉, 杨士林. 微波溶剂法合成天冬氨酸-谷氨酸共聚物研究[J]. CIESC Journal.

ZHANG Yuling, HUANG Junli, CHENG Zhihui, YANG Shilin. Microwave-assisted synthesis of modified polyaspartic acid in solvent[J]. .

参考文献

1 Tao, H.C., Huang, J.L., Yang, S.L., Zhang, Y.L., Xing, L.G., “Study on
environmental consequence of polyas-partic acid”, Res. Environmental Sci., 17(5), 32—34
(2004). (in Chinese)
2 Larry, P.K., Kim, C.L., “Polyaspartic acid as a calcium sulfate and a barium
sulfate inhibitor”, US Pat., 5116513 (1992).
3 Larry, P.K., Kim, C.L., Abdul, R. Y.M., Anne, M.A., Polyaspartic acid as a calcium
carbonate and a calcium phosphate inhibitor, US Pat., 5152902(1992).
4 Yang, Q.F., “Inhibition of CaCO3 scaling in reverse os-mosis system by zinc ion”,
Chin. J. Chem. Eng., 14(2), 178—183(2006).
5 Lei, W., Xu, J., Xia, M.Z., Song, W.Y., Wang, Y.F., “Syn-thesis of polyaspartic
acid”, Chin. J. Appl. Chem., 20(4), 397—399(2003). (in Chinese)
6 Pan, M., Wang, Y.Q., Liu, T.F., Hou, Y.J., “Scale inhibit-ing abilities of poly
(aspartic acid) and combinations of phosphorus containing inhibitors”, Indus. Water Treat
-ment, 23(6), 21—22(2003). (in Chinese)
7 Grigory, Y.M., Robert, J.R., James, F.K., Jacob, M., “Pro-duction of succinimide
copolymers in cyclic carbonate solvent”, US Pat., 6197897 (2001).
8 Grigory, Y.M, Jacob, M., “Production of polysuccinimide and derivatives thereof in
a sulfur-containing solvent”, US Pat., 6005069 (1999).
9 Louis, L.W., Gray, J.C., “Copolymers of polyaspartic acid and polycarboxylic acid
and polyamines”, US Pat., 6001956 (1999).
10 Grigory, Y.M., Robert, J.R., James, F.K., Jacob, M., “So-lution polymerizing
aspartic acid and monomer to form succinimide copolymer”, US Pat., 6399715 (2002)
11 Robert, J.R., Kim, C.L., James, E.S., “Polyaspartate scale inhibitors-
biodegradable alternatives to polyarylates”, Material Performance, 36(4), 53—57(1997).
12 Pivcová, H., Saudek, V., Schmidt, P., Hiavatá, D., Pleštil, J., Lauprêtre, F.,
“Conformation of poly(glutamic acid) and of poly(aspartic acid) in the solid state. X-ray
dif-fraction, infra-red and 13C cross-polarization/magic angle spinning nuclear magnetic
resonance spectroscopic study”, Polymer, 28(5), 991—996(1987).
13 Steven, K.W., Graham, S., Yi, H.P., Kathryn, M.Y., Re-becca, L.S., Simon, E.S.,
“One- and two-dimensional nu-clear magnetic resonance characterization of poly(aspartic
acid) prepared by thermal polymerization of L-aspartic acid”, Macromolecules, 27, 7613—
7620(1994).
14 Pivcová, H., Saudek, V., Drobník, J., Vlasák, J., “NMR study of poly(aspartic
acid) (Ⅰ) α- and β-peptide bonds in poly (aspartic acid) prepared by thermal polyconden
-sation”, Biopolymer, 20, 1605—1614(1981).

微波溶剂法合成天冬氨酸-谷氨酸共聚物研究

Microwave-assisted synthesis of modified polyaspartic acid in solvent

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