PREPARATION OF AMPHOTERIC COPOLYMER P(AM-co-AA-co-DAC-co-DMC) BY DISPERSION POLYMERIZATION IN AMMONIUM SULFATE AQUEOUS SOLUTIONS

SHEN Zhong; LIAN Hongyan; ZHOU Yifeng; NIE Wangyan

doi:10.3724/SP.J.1105.2010.09155

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PREPARATION OF AMPHOTERIC COPOLYMER P(AM-co-AA-co-DAC-co-DMC) BY DISPERSION POLYMERIZATION IN AMMONIUM SULFATE AQUEOUS SOLUTIONS

Research Article | 更新时间：2021-03-19

- PREPARATION OF AMPHOTERIC COPOLYMER P(AM-co-AA-co-DAC-co-DMC) BY DISPERSION POLYMERIZATION IN AMMONIUM SULFATE AQUEOUS SOLUTIONS
- Acta Polymerica Sinica Issue 5, Pages: 530-535(2010)
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- DOI：10.3724/SP.J.1105.2010.09155
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- Published：20 May 2010，
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SHEN Zhong, LIAN Hongyan, ZHOU Yifeng, NIE Wangyan. PREPARATION OF AMPHOTERIC COPOLYMER P(AM-co-AA-co-DAC-co-DMC) BY DISPERSION POLYMERIZATION IN AMMONIUM SULFATE AQUEOUS SOLUTIONS. [J]. Acta Polymerica Sinica (5):530-535(2010)
DOI：

SHEN Zhong, LIAN Hongyan, ZHOU Yifeng, NIE Wangyan. PREPARATION OF AMPHOTERIC COPOLYMER P(AM-co-AA-co-DAC-co-DMC) BY DISPERSION POLYMERIZATION IN AMMONIUM SULFATE AQUEOUS SOLUTIONS. [J]. Acta Polymerica Sinica (5):530-535(2010) DOI： 10.3724/SP.J.1105.2010.09155.

摘要

利用分散聚合技术，在硫酸铵水溶液中以丙烯酰胺（AM）、丙烯酸 (AA)、丙烯酰氧乙基三甲基氯化铵（DAC）、甲基丙烯酰氧乙基三甲基氯化铵（DMC）为单体，合成了两性共聚物P(AM-co-AA-co-DAC-co-DMC).用FTIR，13C-NMR，TEM等方法表征了聚合物的结构和组成.考察了不同分散稳定剂、正负离子单体配比和pH对分散聚合的影响，并对P(AM-co-AAco-DAC-co-DMC)水基分散聚合条件及稳定性进行了一些探讨.实验表明，在硫酸铵水溶液中制得较稳定的P(AM-co-AA-co-DAC-co-DMC) 分散体系，应选用非离子型或阳离子型的分散稳定剂，如聚乙烯吡咯烷酮（PVP）、聚甲基丙烯酰氧乙基三甲基氯化铵（PDMC）、聚丙烯酰氧乙基三甲基氯化铵（PDAC），而其pH应在2到4之间.当选用占总质量1.5%的聚乙烯吡咯烷酮（PVP）为分散稳定剂，引发温度为40℃，正负离子单体物质的量比值大于1，pH=3时，可以制得总离子度超过25%的纳米级两性聚合物.

Abstract

The amphoteric copolymer P(AM-co-AA-co-DAC-co-DMC) was synthesized by dispersion polymerizationin in ammonium sulfate aqueous solutions

in which noionic monomer acrylamide (AM)

anionic monomer acrylic acid (AA)

cationic monomer acryloyloxyethyltrimethyl ammonium chloride (DAC) and cationic monomer methacryloyloxyethyltrimethyl ammonium chloride (DMC) were used as raw materials.The characteristics of copolymers were studied by means of FTIR

13C-NMR

transmission electron microscopy(TEM) and other methods.The effects of different dispersants

the molar ratio of anionic monomer to cationic monomer and pH on the dispersion polymerization process and the stability of the dispersion system were investigated.The results showed that when the amphoteric copolymer P(AM-co-AA-co-DAC-co-DMC) was synthesized in the ammonium sulfate aqueous solution

to obtain a relatively stable dispersion system

it should choose to use nonionic dispersion stabilizer or cationic dispersion stabilizer as polymeric stabilizer

such as polyvinylpyrrolidone (PVP)

poly(methacryloyloxyethyltrimethyl ammonium chloride) (PDMC) and poly\|(acryloylxyethyltrimethyl ammonium chloride)(PDAC) should be used

and its pH should be between 2 and 4.Amphoteric nano-copolymers with more than 25% total ion exponent can be obtained under the following optimized conditions:a mass fraction of polymeric stabilizer polyvinylpyrrolidone (PVP) is 1.5%

an initiation temperature is 40℃

pH = 3

the molar ratio of ionic monomer to cationic monomer is less than 1.

关键词

水基分散聚合两性共聚物丙烯酰胺分散剂

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