| 钛酸四丁酯引发聚己内酯接枝改性淀粉的制备 |
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| 引用本文： | 李勇锋,林嘉平,陆冲,程树军.钛酸四丁酯引发聚己内酯接枝改性淀粉的制备[J].北京科技大学学报,2007,29(2):173-177. |
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| 作者姓名： | 李勇锋 林嘉平 陆冲 程树军 |
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| 作者单位： | 华东理工大学材料科学与工程学院,上海,200237 |
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| 摘 要： | 以玉米淀粉和己内酯单体为原料,以钛酸四丁酯为催化剂,通过原位开环聚合制备聚己内酯接枝改性淀粉,并利用红外光谱和差热扫描对接枝改性淀粉和玉米淀粉进行了比较. 进而制备了接枝改性淀粉和聚己内酯的共混材料,并对共混材料的力学性能、疏水性和界面性能进行评价. 结果表明,对淀粉进行接枝改性后能够有效改善共混材料两相的相容性,且共混材料的力学性能有所提高. 共混材料的疏水性得到改善,吸水前后材料力学性能变化不大.
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| 关 键 词： | 玉米淀粉 聚己内酯 钛酸四丁酯 接枝共聚 力学性能 钛酸四丁酯 聚己内酯 接枝改性 改性淀粉 titanate copolymer 性能变化 材料力学 相容性 改善 结果 评价 界面性能 疏水性 力学性能 共混材料 比较 差热扫描 红外光谱 利用 |
| 修稿时间： | 2006-09-05 |
Synthesis of polycaprolactone-grafted-starch copolymer by tetrabutyl titanate |
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| LI Yongfeng,LIN Jiaping,LU Chong,CHENG Shujun.Synthesis of polycaprolactone-grafted-starch copolymer by tetrabutyl titanate[J].Journal of University of Science and Technology Beijing,2007,29(2):173-177. |
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| Authors: | LI Yongfeng LIN Jiaping LU Chong CHENG Shujun |
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| Institution: | Materials Science and Engineering School, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | Polycaprolactone-grafted-starch (PCL-g-St) was synthesized with caprolactone and corn starch using tetrabutyl titanate as initiator via coordination-insertion ring-opening polymerization. PCL-g-St and corn starch were compared using FTIR and DSC. The blend of PCL and PCL-g-St was prepared, and the mechanical properties, hydrophobicity, interface properties of the blend were investigated. The results show that the compatibility of the two phases in the blend is effectively improved after the starch was grafted with PCL and the mechanical properties are also increased compared with a non-modified St/PCL blend. The hydrophobicity of the PCL-g-St/PCL blend is improved, and its mechanical properties are not much influenced after being soaked into the water. |
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| Keywords: | corn starch polycaprolactone tetrabuty1 titanate graft copolymerization mechanical properties |
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