| 反应挤出法制备马来酸酐接枝聚乳酸 |
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| 引用本文： | 于人同,方显力,张云灿,陈贤益.反应挤出法制备马来酸酐接枝聚乳酸[J].高分子材料科学与工程,2009(3):85-88. |
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| 作者姓名： | 于人同 方显力 张云灿 陈贤益 |
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| 作者单位： | 南京工业大学材料科学与工程学院; |
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| 摘 要： | 采用反应挤出方法制备了聚乳酸(PLA)与马来酸酐(MAH)的接枝共聚物,研究了工艺条件和配方对产物接枝率和熔体流动速率的影响。结果表明,聚乳酸的接枝反应主要依赖于大分子侧链自由基进行,过高的螺杆转速或过高的挤出反应温度会引发聚乳酸的降解反应,不利于产物接枝率的提高;在适宜的反应条件下(马来酸酐含量2%,DCP含量0.35%,温度180℃,螺杆转速100 r/min),可以方便制得马来酸酐接枝聚乳酸产物(接枝率≥0.45%);SEM观察显示,马来酸酐接枝聚乳酸有效改善了PLA/淀粉共混材料的相容性。
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| 关 键 词： | 聚乳酸 马来酸酐 反应挤出 接枝 |
Preparation and Properties of PLA Grafted with Maleic Anhydride Through Reactive Extrusion |
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| YU Ren-tong,FANG Xian-li,ZHANG Yun-can,CHEN Xian-yi.Preparation and Properties of PLA Grafted with Maleic Anhydride Through Reactive Extrusion[J].Polymer Materials Science & Engineering,2009(3):85-88. |
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| Authors: | YU Ren-tong FANG Xian-li ZHANG Yun-can CHEN Xian-yi |
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| Affiliation: | College of Material Science and Engineering;Nanjing University of Technology;Nanjing 210009;China |
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| Abstract: | Functionalization of polylactide(PLA) has been performed by means of melt grafting reaction of maleic anhydride(MAH) initiated by dicumyl peroxide(DCP) in a corotating intermeshing twin-screw extruder.The effects of the processing condition and the composition of reaction mixture on the properties of polylactide grafted maleic anhydride product(PLA-g-MAH) were investigated.The results show that the excessive screw rotation speed or a higher reaction temperature can lead to the degradation of PLA or the decr... |
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| Keywords: | PLA maleic anhydride reactive extrusion melt grafting |
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