SYNTHESIS AND PERFORMANCE OF POLYURETHANE WITH QUADRUPLE HYDROGEN BOND UNITS

FENG Zhicheng; ZHU Bo; YAO Hongxi; WANG Mingjun; YANG Xiaohui

doi:10.3724/SP.J.1105.2012.11185

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SYNTHESIS AND PERFORMANCE OF POLYURETHANE WITH QUADRUPLE HYDROGEN BOND UNITS

Research Article | 更新时间：2021-03-19

- SYNTHESIS AND PERFORMANCE OF POLYURETHANE WITH QUADRUPLE HYDROGEN BOND UNITS
- Acta Polymerica Sinica Issue 3, Pages: 318-325(2012)
- 作者机构：
  
  上海交通大学化学化工学院,上海,200240
- 作者简介：
- 基金信息：
- DOI：10.3724/SP.J.1105.2012.11185
  CLC：
- Published：20 March 2012，
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FENG Zhicheng, ZHU Bo, YAO Hongxi, WANG Mingjun, YANG Xiaohui. SYNTHESIS AND PERFORMANCE OF POLYURETHANE WITH QUADRUPLE HYDROGEN BOND UNITS. [J]. Acta Polymerica Sinica (3):318-325(2012)
DOI：

FENG Zhicheng, ZHU Bo, YAO Hongxi, WANG Mingjun, YANG Xiaohui. SYNTHESIS AND PERFORMANCE OF POLYURETHANE WITH QUADRUPLE HYDROGEN BOND UNITS. [J]. Acta Polymerica Sinica (3):318-325(2012) DOI： 10.3724/SP.J.1105.2012.11185.

摘要

合成了一种新型含有UPy(2-ureido-4[1H]-pyrimidone)基团的二羟基化合物

以此二羟基化合物作扩链剂

通过与聚氨酯预聚体进行的扩链反应

制备了一系列主链含UPy的聚氨酯(PU-UPy).傅里叶红外光谱(FTIR)、氢核磁共振(1H-NMR)等测试结果表明

在聚氨酯主链中确实含有UPy链段.同时

热性能及力学性能测试表明

聚氨酯中的UPy二聚体会集聚而形成微晶

熔点在60℃附近.在聚氨酯主链中引入UPy

能大幅提高聚氨酯的力学性能

调整软段的分子量

以及在主链中UPy含量可改变聚氨酯弹性体的断裂伸长率和抗张强度.

Abstract

A new kind of supramolecular polymer can be obtained through hydrogen bond interactions of UPy (2-ureido-4[1H]-pyrimidone) units.So it is a new method of polymer modification.Inspired by this

a new kind of polyurethane with UPy units in the main chain was designed.A novel polyurethane chain extender containing UPy units was synthesized through five steps.UPy units were introduced into the main chain of the polyurethane through reacting OH groups with the NCO groups in the prepolymer.The structure was characterized by FTIR and 1H-NMR.The thermal testing results showed that the UPy units aggregated to form microcrystals which melted around 60℃ in the polyurethane.The polyurethane with UPy units in the main chain showed greatly improved mechanical performances compared to the non-UPy counterpart in the tensile testing.The breaking strength was up to 28.6

17.3

15.5

14.9 MPa by using PTMG650

1000

1400

2000 as the soft segment.UPy content in the PU can be adjusted through changing the molecular weight of the soft segment to get PU elastomers with proper performance.

关键词

UPy四重氢键超分子化学聚氨酯扩链剂

Keywords

UPyQuadruple hydrogen bondSupramolecular chemistryPolyurethaneChain extender

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Related Institution

College of Textile Science and Engineering, Jiangnan University

College of Chemistry, State Key Laboratory of Supramolecular Structure and Materials, Jilin University

College of Science, Tianjin University

Department of Chemistry, Tsinghua University

Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology

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