A novel polyaspartic acid derivative with multifunctional groups for scale inhibition application

  title={A novel polyaspartic acid derivative with multifunctional groups for scale inhibition application},
  author={Ying Zhang and Hongquan Yin and Qingshan Zhang and Yunzheng Li and Pengjun Yao and Hongyu Huo},
  journal={Environmental Technology},
  pages={843 - 850}
ABSTRACT Polyaspartic acid is a green biodegradable antiscalant and widely applied in water treatment field. However, its scale inhibition efficiency is not prominent, especially for calcium orthophosphate. So we introduced acylamino and hydroxyl groups simultaneously to prepare a novel polyaspartic-acid derivative (PASPTU) with multifunctional groups by the reaction of polysuccinimide with threonine and urea. The graft copolymer was analyzed by using nuclear magnetic resonance, gel permeation… 
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