| 光谱学与光谱分析 |
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| Study on Effect of Hyperbranched Polyester on the Mechanical Properties and Morphology of PEG Polyurethane Elastomer by ATR-FTIR |
| LIU Jing-ru，CHAO Ling-ling，YU Qiang，ZHU Meng-bing，GU Chun-miao |
| School of Materials Science and Engineering，Changzhou University，Changzhou 213164，China |
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Abstract In order to enhance the mechanical properties of polyethylene glycol (PEG) polyurethane elastomer, the modified hyperbranched polyester (HBP) was introduced. The chemical structures of HBP/PEG polyurethane films were analyzed by attenuated total reflection-Fourier transfoum infrared speetrum (ATR-FTIR). The results indicate that with the modified hyperbranched polyester added, the tensile strength and elongation at break of PEG polyurethane elastomer are improved obviously. When the content of hyperbranched polyester of the third generation is 0.4%, the resultant elastomer has the best tensile strength, which increases 2.53 times. When the content of hyperbranched polyester of the first generation rises up to 1.6%, the resultant elastomer has the best elongation at break, which increases 1.43 times. The degree of the total hydrogen bonding and the degree of microphase separation are increased, which enhance the mechanical properties of PEG polyurethane elastomer.
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Received: 2010-09-15
Accepted: 2010-11-02
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Corresponding Authors:
LIU Jing-ru
E-mail: ruruliu1028@163.com
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