Nucleation and Crystallization Behavior of Poly(butylene succinate) Induced by Its α-Cyclodextrin Inclusion Complex: Effect of Stoichiometry
Nucleation and Crystallization Behavior of Poly(butylene succinate) Induced by Its α-Cyclodextrin Inclusion Complex: Effect of Stoichiometry
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DOI：
10.1021/ma052687j
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发表时间：
2006-02
期刊：
影响因子：
5.5
通讯作者：
Tungalag Dong;Kyung-moo Shin;Bo Zhu;Y. Inoue
中科院分区：
文献类型：
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作者：
Tungalag Dong;Kyung-moo Shin;Bo Zhu;Y. Inoue
近年来，生物可降解聚合物作为环境友好材料引起了人们的广泛关注。然而，与传统的工程聚合物相比，它们在物理性能和加工性能方面较差。为了改善生物可降解聚合物的这些缺点，许多研究人员对聚合物共混和共聚进行了研究。已知添加成核剂可提高结晶聚合物的结晶速率和总结晶度。环糊精（CD）被认为是生物可降解聚合物的理想绿色成核剂5，因为它们不会引起免疫应答并且在动物和人类中具有低毒性。6在我们以前的工作中，7我们研究了R-CD包合物（R-CD IC）与几种线性螺纹聚合物对可生物降解聚合物结晶的影响。结果表明，当IC中的客体聚合物与聚合物基体相同时，R-CD-聚合物IC的加入更有效地促进了聚合物的成核。在本说明中，研究了R-CD IC中主体R-CD和客体聚合物之间的化学计量对聚合物成核增强的影响，因为化学计量也预计会影响成核效应的程度。采用差示扫描量热法（DSC）和偏光显微镜（POM）研究了不同配比的R-CD-PBS IC对聚丁二酸丁二醇酯（PBS）成核和结晶行为的影响。
In recent years, biodegradable polymers have attracted much attention as environment-friendly materials. However, compared with the traditional engineering polymers, they are inferior with respect to physical properties and processability. To improve these weak points of biodegradable polymers, polymer blending and copolymerization have been investigated by many researchers. 1-5An addition of nucleating agent is known to enhance the crystallization rate and the overall crystallinity of crystalline polymers. Cyclodextrins (CDs) are considered to be ideal candidates as a green nucleating agent for biodegradable polymers5 because they do not elicit immune responses and have low toxicities in animals and humans. 6 In our previous work, 7 we have investigated the effect of R-CD inclusion complexes (R-CD ICs) with several linear threading polymers on the crystallization of biodegradable polymers. It was found that the addition of R-CD-polymer IC more effectively enhances the nucleation of the polymer when the guest polymer of the IC was the same one as the polymer matrix. In this Note, the effect of the stoichiometry between the host R-CD and the guest polymer in the R-CD IC on the enhancement of the polymer nucleation is investigated because the stoichiometry is also expected to affect the extent of the nucleating effect. The nucleation and crystallization behavior of poly (butylene succinate)(PBS) blended with the R-CD-PBS IC with different stoichiometries are investigated by differential scanning calorimetry (DSC) and polarized optical microscopy (POM).