SYNTHESIS OF POLYSTYRENE-b-POLY(SODIUM VINYLTEREPHTHALATE) BLOCK COPOLYMER AND THEIR EFFECT ON PET CRYSTALLIZATION

XU  Yi-Ding; SHEN  Zhi-Hao; FAN  Xing-He; ZHOU  Qi-Feng

doi:10.3724/SP.J.1105.2011.11015

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SYNTHESIS OF POLYSTYRENE-b-POLY(SODIUM VINYLTEREPHTHALATE) BLOCK COPOLYMER AND THEIR EFFECT ON PET CRYSTALLIZATION

Research Article | 更新时间：2021-03-19

- SYNTHESIS OF POLYSTYRENE-b-POLY(SODIUM VINYLTEREPHTHALATE) BLOCK COPOLYMER AND THEIR EFFECT ON PET CRYSTALLIZATION
- Acta Polymerica Sinica Issue 9, Pages: 1053-1059(2011)
- 作者机构：
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- DOI：10.3724/SP.J.1105.2011.11015
  CLC：
- Published：20 September 2011，
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XU Yi-Ding, SHEN Zhi-Hao, FAN Xing-He, ZHOU Qi-Feng. SYNTHESIS OF POLYSTYRENE-b-POLY(SODIUM VINYLTEREPHTHALATE) BLOCK COPOLYMER AND THEIR EFFECT ON PET CRYSTALLIZATION. [J]. Acta Polymerica Sinica (9):1053-1059(2011)
DOI：

XU Yi-Ding, SHEN Zhi-Hao, FAN Xing-He, ZHOU Qi-Feng. SYNTHESIS OF POLYSTYRENE-b-POLY(SODIUM VINYLTEREPHTHALATE) BLOCK COPOLYMER AND THEIR EFFECT ON PET CRYSTALLIZATION. [J]. Acta Polymerica Sinica (9):1053-1059(2011) DOI： 10.3724/SP.J.1105.2011.11015.

摘要

通过原子转移自由基聚合合成了线形及三臂聚苯乙烯-b -聚2(5)-乙烯基对(间)苯二甲酸二钠嵌段共聚物

通过凝胶渗透色谱、核磁共振和热失重表征证实得到了结构明确、分散度较窄的嵌段共聚物成核剂.采用熔融共混的方法制得聚对苯二甲酸乙二酯(PET)与成核剂共混样品.采用差示扫描量热仪与一维X射线衍射仪研究了PET及添加成核剂后PET的非等温结晶过程

对不同结构和组成成核剂的成核效果进行对比研究

结果表明所合成的一系列共聚物都能有效改善PET结晶过程

同时还能有效保持PET分子量.

Abstract

A series of block copolymers of styrene and sodium 2-vinylterephthalate (sodium 5-vinylisophthalate) was synthesized via atom transfer radical polymerization (ATRP).Their structures were confirmed by 1H-NMR

gel permeation chromatography (GPC)

and thermogravimetric analysis (TGA).These copolymers had good thermal stability and were used as nucleating agents for PET.Differential scanning calorimetric (DSC) experiments were carried out to study the relationship between polymer structures and the effect on improving the crystallization of PET.Compared with pure PET

PET/copolymer blends showed higher crystallization temperatures and higher crystalline enthalpies.Ubbelohode viscometer was used to measure the intrinsic viscosities of PET and PET/copolymer blends.One-dimensional wide-angle X-ray diffraction (1D WAXD) experiments were carried out to determine the crystalline structure of samples.The results indicated that all these block copolymers were effective PET nucleating agents.They were able to not only improve the crystallization process of PET

but also retain the molecular weights of the samples.

关键词

PET成核剂嵌段共聚物

Keywords

PETNucleating agentsBlock copolymers

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Related Institution

Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology

State Key Laboratory of Supramolecular Molecular Structure amd Materials, Colloge of Chemistry, Jilin University

Shanghai Key Laboratory of Advanced Polymeric Materials, School of Science and Engineering, East China of University of Science and Technology

School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University

State Key Laboratory of Luminescent Materials and Devices, South China University of Technology

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