Competitive Formation of Polymer−Cyclodextrin Inclusion Compounds
Competitive Formation of Polymer−Cyclodextrin Inclusion Compounds
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DOI：
10.1021/ma021755o
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发表时间：
2003-03
期刊：
影响因子：
5.5
通讯作者：
C. Rusa;J. Fox;A. Tonelli
中科院分区：
文献类型：
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作者：
C. Rusa;J. Fox;A. Tonelli
客体聚合物的疏水性以及客体聚合物截面与主体环糊精（CD）空腔直径之间的几何相容性在一种或两种客体聚合物分别与一种或两种不同类型的CD形成包合物（IC）中起重要作用。例如，当聚合物A-CD IC晶体悬浮在含有聚合物B的溶液中，并且在聚合物B-CD IC形成期间，聚合物B与聚合物A发生交换而没有CD-IC溶解时，可以区分特定的聚合物-CD相互作用。当使用聚合物对聚（e-己内酯）（PCL）/聚（l-乳酸）（PLLA）时，我们观察到PLLA-α-CD IC完全转化为PCL-α-CD IC，而反向聚合物转移几乎完全被禁止。α-CD主体分子也优先包括来自普通PCL/PLLA溶液的PCL链。此外，观察PCL从PCL−γ-CD IC晶体悬浮在溶液中的转移，含有...
The hydrophobicity of the guest polymer and also the geometrical compatibility between guest polymer cross section and cavity diameter of the host cyclodextrin (CD) play important roles in the formation of inclusion compounds (ICs) between a mixture of one or two guest polymers with one or two different types of CDs, respectively. Specific polymer−CD interactions can be distinguished when, for example, polymer A−CD IC crystals are suspended in a solution containing polymer B, and a polymer B for polymer A exchange occurs, without CD−IC dissolution, during formation of polymer B−CD IC. When using the polymer pair poly(e-caprolactone) (PCL)/poly(l-lactic acid) (PLLA), we have observed that PLLA−α-CD IC is completely converted to PCL−α-CD IC, while the reverse polymer transfer is almost completely prohibited. α-CD host molecules also preferentially included PCL chains from a common PCL/PLLA solution. In addition, observation of the transfer of PCL from PCL−γ-CD IC crystals suspended in a solution containing ...