| PLA—SPP共聚物的合成及其在SPI／PLA共混中的应用 |
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| 引用本文： | 李阳,滕翠青,余木火. PLA—SPP共聚物的合成及其在SPI／PLA共混中的应用[J]. 合成纤维, 2009, 38(4): 11-15 |
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| 作者姓名： | 李阳 滕翠青 余木火 |
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| 作者单位： | 纤维材料改性国家重点实验室,东华大学材料学院,上海,201620 |
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| 摘 要： | 以辛酸亚锡为催化剂，合成出丙交酯-大豆多肽共聚物（PLA-SPP），并对其进行红外及核磁共振光谱表征。研究了大豆蛋白（SPI）与聚乳酸（PLA）的共混工艺，考察了PLA-SPP共聚物对SPI/PLA共混体系的影响，发现该共聚物能有效地增加两者的相容性，当共聚物的含量为5%时，共混物的相容性明显改善；样品断面扫描电镜（SEM）照片显示，其微观结构明显变得均匀，两相分散较好。DSC结果显示，共聚物的加入增大了PLA与SPI间的作用力，并阻碍了PLA相的结晶行为。同时，加入共聚物后，共混物的耐水性也得到了明显提高。
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| 关 键 词： | 大豆蛋白 聚乳酸 共聚物 共混物 相容性 |
Synthesis of PLA-SPP Copolymer and its Role in SPI/PLA Blends |
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| LI Yang,TENG Cui-qing,YU Mu-huo. Synthesis of PLA-SPP Copolymer and its Role in SPI/PLA Blends[J]. Synthetic Fiber in China, 2009, 38(4): 11-15 |
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| Authors: | LI Yang TENG Cui-qing YU Mu-huo |
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| Affiliation: | State Key Laboratory for Modification of Chemical Fibers & Polymer Materials;College of Material Science & Engineering;Donghua University;Shanghai 201620;China |
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| Abstract: | PLA-SPP [poly(lactic acid-co-soybean polypeptide) ] copolymer was synthesized using stannous octoate as catalyst and characterized by FTIR and NMR.The blending of soy protein isolate(SPI) and polylactide(PLA) was studied and the effects of PLA-SPP copolymer on the blends were investigated.It was found that the addition of the copolymer to the blends improved the compatibility of SPI/PLA blends,especially when the content of the copolymer came to 5 %,and the section of the sample showed finer co-continuous m... |
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| Keywords: | SPI PLA copolymer blend compatibility |
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