PREPARATION AND CHARACTERIZATION OF VINYLIDENE CHLORIDE COPOLYMER/LAYERED DOUBLE HYDROXIDES NANOCOMPOSITES

Fei-yan Jiang; Jie Yang; Yong-zhong Bao

doi:10.3724/SP.J.1105.2013.12382

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PREPARATION AND CHARACTERIZATION OF VINYLIDENE CHLORIDE COPOLYMER/LAYERED DOUBLE HYDROXIDES NANOCOMPOSITES

Research Article | 更新时间：2021-03-19

- PREPARATION AND CHARACTERIZATION OF VINYLIDENE CHLORIDE COPOLYMER/LAYERED DOUBLE HYDROXIDES NANOCOMPOSITES
- Acta Polymerica Sinica Issue 9, Pages: 1131-1136(2013)
- 作者机构：
  
  浙江大学化学工程联合国家重点实验室化学工程与生物工程学系,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.3724/SP.J.1105.2013.12382
  CLC：
- Published：20 September 2013，
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Fei-yan Jiang, Jie Yang, Yong-zhong Bao. PREPARATION AND CHARACTERIZATION OF VINYLIDENE CHLORIDE COPOLYMER/LAYERED DOUBLE HYDROXIDES NANOCOMPOSITES. [J]. Acta Polymerica Sinica (9):1131-1136(2013)
DOI：

Fei-yan Jiang, Jie Yang, Yong-zhong Bao. PREPARATION AND CHARACTERIZATION OF VINYLIDENE CHLORIDE COPOLYMER/LAYERED DOUBLE HYDROXIDES NANOCOMPOSITES. [J]. Acta Polymerica Sinica (9):1131-1136(2013) DOI： 10.3724/SP.J.1105.2013.12382.

摘要

通过硝酸根插层层状双金属氢氧化物(LDH)与可逆加成-断裂链转移(RAFT)试剂S

S'-对(

'-二甲基--乙酸)三硫代碳酸酯(CTA)阴离子的离子交换制备CTA阴离子插层LDH

再通过原位RAFT活性自由基聚合制备偏氯乙烯-丙烯酸甲酯(VDC-MA)共聚物/LDH纳米复合材料.采用傅里叶变换红外光谱、元素分析和X-射线衍射、透射电子显微镜、凝胶渗透色谱仪和热失重仪表征了CTA阴离子插层LDH和纳米复合材料的结构和性能.结果表明

CTA阴离子可以置换硝酸根阴离子插入到LDH层间

LDH层间距由0.89 nm增大到1.50 nm;在原位RAFT聚合过程中

LDH逐渐剥离

LDH以纳米层板形式分散在VDC-MA共聚物基体中;VDC-MA共聚物数均分子量随加入的插层CTA阴离子含量增加而减小

聚合具有活性特征.此外

含量LDH的引入可明显提高VDC-MA共聚物的热稳定性.

Abstract

In order to prepare vinylidene chloride-methyl acrylate(VDC-MA) copolymer/layered double hydroxide(LDH) nanocomposites with intercalated or exfoliated LDH structure

reversible addition-fragmentation chain transfer living radical polymerization of VDC-MA were carried out in the presence of LDH intercalated with S

S'-bis('-dimethyl--acetic acid)-trithiocarbonate anion groups(CTA-LDH).The structure and properties of CTA-LDH and VDC-MA copolymer/LDH nanocomposites were characterized by Fourier transform infrared spectroscopy

elemental analysis

transmission electron microscopy

gel permeation chromatography and thermogravimetric analysis.It was found that the layer spacing of LDH changed from 0.89 nm to 1.50 nm as CTA anion groups intercalated into LDH through the ion-exchange reaction.The average molecular weight of VDC-MA copolymers was decreased as the amount of intercalated CTA increased

confirming the living nature of VDC-MA copolymerizations.LDH could be gradually exfoliated in the process of in situ RAFT polymerization

and dispersed in VDC-MA copolymer matrix in the form of nanolaminates.The TGA data evidenced that the thermal degradation temperatures of VDC-MA copolymer/LDH nanocomposites were increased as the weight fraction of incorporated LDH increased.

关键词

偏氯乙烯层状双金属氢氧化物纳米复合材料可逆加成-断裂链转移活性自由基聚合

Keywords

Vinylidene chlorideLayered double hydroxidesNanocompositeReversible addition-fragmentation chain transfer living radical polymerization

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Related Institution

College of Materials Science & Engineering, Beijing University of Chemical Technology

Key Laboratory of Advanced Materials, Department of Chemical Engineering, Tsinghua University

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing Laboratory of Biomedical Materials

State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology

State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University

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