| PPDO/PDLLA共混物的结晶行为 |
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| 引用本文： | 白威,张丽芳,黄小川,李庆,熊成东.PPDO/PDLLA共混物的结晶行为[J].高分子材料科学与工程,2009(11). |
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| 作者姓名： | 白威 张丽芳 黄小川 李庆 熊成东 |
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| 作者单位： | 中国科学院成都有机化学研究所;四川大学工科学报编辑部; |
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| 基金项目： | 中国科学院“西部之光”人才培养计划项目 |
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| 摘 要： | 通过溶液共混的方法得到了一系列PPDO/PDLLA生物可降解复合物。利用差示扫描量热法(DSC),配带热台的偏光显微镜(POM)和X射线衍射法(XRD)研究了聚对二氧环己酮(PPDO)与外消旋聚乳酸(PDLLA)共混物的结晶行为。结果表明,PPDO/PDLLA复合物的DSC曲线具有两个明显不同的Tg,分别与其均聚物的Tg相对应,说明二者是不相容的,同时PDLLA的加入并未明显影响PPDO的晶体结构,同时PDLLA的存在提高了PPDO的结晶度,并显著加速了PPDO的结晶过程。
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| 关 键 词： | 聚对二氧环己酮 外消旋聚乳酸 共混 结晶 |
Crystallization Behaviour of PPDO/PDLLA Blends |
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| BAI Wei,ZHANG Li-fang,HUANG Xiao-chuan,LI Qing,XIONG Cheng-dong.Crystallization Behaviour of PPDO/PDLLA Blends[J].Polymer Materials Science & Engineering,2009(11). |
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| Authors: | BAI Wei ZHANG Li-fang HUANG Xiao-chuan LI Qing XIONG Cheng-dong |
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| Affiliation: | BAI Wei1,ZHANG Li-fang1,HUANG Xiao-chuan2,LI Qing1,XIONG Cheng-dong1 (1.Chengdu Institute of Organic Chemistry,Chinese Academy of Sciences,Chengdu 610041,China,2.Editorial Department of Sichuan University,Chengdu 610065,China) |
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| Abstract: | A series of biodegradable polymers were prepared by solution co-precipitation of poly(para-dioxanone)(PPDO) and poly(DL-lactide)(PDLLA) in various blend ratios.The influence of PDLLA on the crystalline chararcteristics of PPDO was researched using differential scanning calorimeter(DSC),polarized optical microscopy(POM) and X-ray diffraction(XRD).DSC curves for all blends revealed two discrete glass transition temperatures(Tg) which were nearly constant regardless of composition and matched the values for pu... |
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| Keywords: | PPDO PDLLA blends crystallization |
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