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Citation: ZHU Lin-Yong, MA Chang-Qi, LI Miao-Zhen, WANG Er-Jian. Hydrolysis of AM/AA/AMPS Copolymer at High Temperature[J]. Chinese Journal of Applied Chemistry, ;2000, 17(2): 117-120. shu

Hydrolysis of AM/AA/AMPS Copolymer at High Temperature

1.
Institute of Photographic Chemistry, Chinese Academy of Sciences, Beijing 100101

Received Date: 23 June 1999
Available Online: 18 January 2000
Fund Project: 国家攀登B"复合驱强化采油技术中重要基础研究"(85-33-02-03)资助项目 (85-33-02-03)

The hydrolysis of acrylamide/acrylic acid/2-acrylamido 2-methylpropane sulfonic acid(AM/AA/AMPS) copolymer(P3A) at 90℃ was studied. The results show that the polymer hydrolysis doesn't obey the monotonic kinetic model and there are two reaction stages, involving inter- and intra-molecular reaction mechanisms, respectively. In the first stage the hydrolysis of AM units occurs predominately and the reaction rate much depends on the pH value for the reaction is controlled by direct attacking of hydroxide ions. Whereas in the latter stage the hydrolysis of AMPS units is the main reaction and the reaction rate is less related to the pH due to the intermolecular catalysis by the adjacent AA units. The effects of composition and chain conformation of copolymers on the hydrolysis reaction also have been discussed.
- poly(acrylacmide-acrylic acid-acrylamidomethylpropane sulfonic acid),
- hydro-lysis,
- mechanism
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