| 聚癸二酸丙三醇酯对聚乳酸的改性 |
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| 引用本文： | 顾丽勤,李勇锋,程树军.聚癸二酸丙三醇酯对聚乳酸的改性[J].功能高分子学报,2008,21(3). |
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| 作者姓名： | 顾丽勤 李勇锋 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,超细材料制备与应用教育部重点实验室,上海200237 |
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| 摘 要： | 以丙三醇和癸二酸为单体通过熔融缩聚制得了聚癸二酸丙三醇酯(PGS),并用其预聚物(p-PGS)对聚L-丙交酯(PLLA)进行共混改性.利用傅立叶变换红外光谱(FT-IR)、核磁共振氢谱(1H-NMR)及凝胶渗透色谱(GPC)法对P-PGS的结构进行表征,并研究了改性后材料的力学性能、两相相容性、亲水性能和细胞相容性.结果表明:P-PGS具有支化分子结构,分散系数约为2.7;共混改性后的材料弹性模量和拉伸强度均有所下降,而断裂伸长率从7 %显著提高到150%左右;PLLA/PGS属于海岛式共混结构,PGS以小于10μm的尺寸均匀分布在PLLA基体中;共混后材料的亲水性也有一定的提高,且几乎保持了PLLA原有的细胞相容性.
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| 关 键 词： | 聚癸二酸丙三醇酯 聚乳酸 共混改性 |
Modification of Poly(L-Lactide) by Poly(Glycerol-Sebacate) |
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| GU Li-qin,LI Yong-feng,CHENG Shu-jun.Modification of Poly(L-Lactide) by Poly(Glycerol-Sebacate)[J].Journal of Functional Polymers,2008,21(3). |
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| Authors: | GU Li-qin LI Yong-feng CHENG Shu-jun |
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| Institution: | GU Li-qin,LI Yong-feng,CHENG Shu-jun(Key Laboratory for Ultrafine Materials of Ministry of Education,School of Materials Science , Engineering,East China University of Science , Technology,Shanghai 200237,China) |
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| Abstract: | Poly(glycerol-sebacate)(PGS) was prepared from glycerol and sebacic acid by melt poly-(condensation,) and the prepolymer(p-PGS) was blended with poly(L-lactide)(PLLA) for modification.(p-PGS) was studied by FT-IR,()~1H-NMR and GPC,and the mechanical property,phase compatibility,(hydrophilicity) and cell compatibility of the blending materials were studied.Results shows that p-PGS was branched,the polydispersity index was about 2.7,the modulus and the tensile strength of the materials decreased after modific... |
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| Keywords: | PGS PLLA blending modification |
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