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[1]李智,鲁潇,沈政,等.Na/HMPA溶剂化电子引发MMA的聚合行为[J].南京工业大学学报(自然科学版),2019,41(01):36-40.[doi:10.3969/j.issn.1671-7627.2019.01.006]
 LI Zhi,LU Xiao,SHEN Zheng,et al.Polymerization of methyl methacrylate via initiation of the solvated electron from Na/HMPA solution[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2019,41(01):36-40.[doi:10.3969/j.issn.1671-7627.2019.01.006]
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Na/HMPA溶剂化电子引发MMA的聚合行为()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
41
期数:
2019年01期
页码:
36-40
栏目:
出版日期:
2019-01-28

文章信息/Info

Title:
Polymerization of methyl methacrylate via initiation of the solvated electron from Na/HMPA solution
文章编号:
1671-7627(2019)01-0036-05
作者:
李智鲁潇沈政夏逸尘许平黄健
南京工业大学 材料科学与工程学院,江苏 南京 210009
Author(s):
LI ZhiLU XiaoSHEN ZhengXIA YichengXU PingHUANG Jian
College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
溶剂化电子 Na 六甲基磷酰三胺 聚甲基丙烯酸甲酯 长寿命活性种
Keywords:
solvated electrons Na hexamethylphosphoramide poly(methyl methacrylate) long-living species
分类号:
O631.5
DOI:
10.3969/j.issn.1671-7627.2019.01.006
文献标志码:
A
摘要:
以Na/六甲基磷酰三胺(HMPA)的溶剂化电子溶液引发甲基丙烯酸甲酯(MMA)的聚合,研究聚合动力学及阻聚性质,采用傅里叶变换红外光谱(FT-IR)和核磁共振(NMR)方法表征聚合物的分子量和化学结构。结果表明:溶剂化电子引发MMA聚合的活性种具有长寿命性质。得到的聚甲基丙烯酸甲酯(PMMA)为无规结构,其全同、无规和间同结构的占比分别为10.2%、41.0%和48.8%。1,1-二苯基-2-三硝基苯肼(DPPH)和O2是强烈的阻聚剂,而H2O不具有阻聚性能,排除了溶剂化电子引发MMA聚合的阴离子聚合机制。
Abstract:
Poly(methyl methacrylate)(PMMA)was prepared via the chain initiation of the solvated electron from Na/hexamethylphosphoramide(HMPA)solution.Polymerization behaviors,such as kinetics,molecular weight dependence on the monomer conversion and the inhibition feature,were investigated.Chemical structures of PMMA were characterized by Fourier transform infrared spectrometry(FT-IR)and nuclear magnetic resonance(NMR).Results of polymerization kinetics and molecular weight dependence on the monomer conversion suggested that the long-living reactive species were in the chain propagation.The atactic configuration of PMMA was 10.2% of the isotactic,41.0% of atactic and 48.8% of syndiotactic contents,respectively.The polymerization was seriously retarded by the radical inhibitors of 1,1-diphenyl-2-picrylhydrazyl(DPPH)and oxygen,and not by water,a typical inhibitor for the ionic polymerization.It was assumed that the solvated electron initiated polymerization of MMA would not follow the anionic polymerization mechanism.

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备注/Memo

备注/Memo:
收稿日期:2017-04-01
基金项目:江苏高校优势学科建设工程
作者简介:李智(1992—),男,E-mail:541029546@qq.com; 黄健(联系人),教授,E-mail:jhuang@njtech.edu.cn.
引用本文:李智,鲁潇,沈政,等.Na/HMPA溶剂化电子引发MMA的聚合行为[J].南京工业大学学报(自然科学版),2019,41(1):36-40..
更新日期/Last Update: 2019-02-26