Preparation of Cosmetic-Grade Sodium Polyaspartate

doi:10.11944/j.issn.1000-0518.2020.08.200062

Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (8): 883-888.DOI: 10.11944/j.issn.1000-0518.2020.08.200062

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Preparation of Cosmetic-Grade Sodium Polyaspartate

DONG Yilin^a,b, ZHANG Hao^a, CHEN Jinlong^b*

^aCollege of Food Science and Engineering,Jilin Agricultural University,Changchun 130118,China;
^bKey Laboratory of Polymer Ecomaterials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China

Received:2020-03-10 Published:2020-08-01 Online:2020-08-07
Contact: CHEN Jinlong, assistant professor; Tel:0431-85262247; E-mail:chenjl2015@ciac.ac.cn; Research interests:amino acid polymerization.
Supported by:
National Natural Science Foundation of China(No.21805272, No.31801477)

Abstract

Abstract: Cosmetic-grade sodium polyaspartate was synthesized through the polycondensation of L-aspartic acid. The effects of polymerization temperature, time and catalyst amount on the polymerization were systematically investigated to obtain the optimal polymerization conditions. The structure and molecular weight of sodium polyaspartate were characterized by nuclear magnetic resonance spectroscopy (NMR) and gel permeation chromatography (GPC). The properties of acid and alkali resistance, temperature resistance and compatibility were also evaluated. The resultant sodium polyaspartate has light color (white), low odor, few impurities and high quality, exhibits excellent acid, alkali, temperature resistance and compatibility, reaches the standard as a moisturizing additive.

Key words: L-aspartic acid, sodium polyaspartate, condensation polymerization

DONG Yilin, ZHANG Hao, CHEN Jinlong. Preparation of Cosmetic-Grade Sodium Polyaspartate[J]. Chinese Journal of Applied Chemistry, 2020, 37(8): 883-888.

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Preparation of Cosmetic-Grade Sodium Polyaspartate

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