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二元醇为核单体的超支化聚酯的合成与性能

王勇 朱延安 孔霞 瞿金清

高校化学工程学报Issue(3):482-487,6.
高校化学工程学报Issue(3):482-487,6.DOI:10.3969/j.issn.1003-9015.2013.03.019

二元醇为核单体的超支化聚酯的合成与性能

Synthesis and Properties of Hyperbranched Polyesters with Diol as a Core Monomer

王勇 1朱延安 2孔霞 2瞿金清1

作者信息

  • 1. 华南理工大学 化学与化工学院,广东 广州 510640
  • 2. 嘉宝莉化工集团股份有限公司,广东 江门 529085
  • 折叠

摘要

Abstract

  The third generation hyperbranched polyesters (HBPs) were synthesized by the pseudo-one step method with 2,2-bis(hydroxyl-methyl) propionic acid as AB2 monomer, p-toluene sulfonic acid as catalyst, in which 2-butyl-2-ethyl-1,3-propanediol (BEPD, HBP-1), 1,4-butanediol (BDO, HBP-2), and neopentyl glycol (NPG, HBP-3) were used as the core monomers, respectively. The structures and molecular weights of HBPs were characterized with FT-IR, NMR and GPC as well as their intrinsic viscosities were also given. The film properties of HBPs cured by the toluene diisocyanate adduct were tested. The thermal stability of cured HBPs films were also examined by thermogravimetric analysis (TGA). It was found that HBPs are successfully synthesized and HBP-1 displays the highest branching degree up to 0.55. The GPC measured molecular weights of HBPs approach to the theoretical values, and HBP-1 exhibits the lowest polydispersity index up to 1.68. HBPs are soluble in strong polar solvents and insoluble in non-polar solvents and HBP-1 displays better solubility and lower intrinsic viscosity up to 4.24 mL⋅g−1. The cured HBPs films exhibit good thermal stability, adhesion, flexibility, and high hardness.

关键词

超支化聚酯/核单体/溶解性/乙基丁基丙二醇

Key words

hyperbranched polyesters/core monomers/solubility/2-butyl-3-ethyl-1,3-propanediol

分类

化学化工

引用本文复制引用

王勇,朱延安,孔霞,瞿金清..二元醇为核单体的超支化聚酯的合成与性能[J].高校化学工程学报,2013,(3):482-487,6.

高校化学工程学报

OA北大核心CSCDCSTPCD

1003-9015

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