Citation: Lu Wang, Jing-liang Wang, Chang-ming Dong. PREPARATION AND CHARACTERIZATION OF INCLUSION COMPLEXES OF TWO-ARM LINEAR AND FOUR-ARM STAR-SHAPED POLY(e-CAPROLACTONE)S WITH a-CYCLODEXTRIN[J]. Chinese Journal of Polymer Science, ;2006, 24(3): 245-252. shu

PREPARATION AND CHARACTERIZATION OF INCLUSION COMPLEXES OF TWO-ARM LINEAR AND FOUR-ARM STAR-SHAPED POLY(e-CAPROLACTONE)S WITH a-CYCLODEXTRIN

Received Date: 10 June 2005
Revised Date: 29 June 2005

Both four-arm star-shaped poly(-caprolactone) (4sPCL) and two-arm linear PCL (2LPCL) were synthesized and their inclusion complexation with a-cyclodextrin (a-CD) were studied. The inclusion complexes (ICs) formed between the PCL polymers and a-CD were characterized by 1H-NMR, DSC, TGA, WAXD, and FT-IR, respectively. Both branch arm number and molecular weight of the PCL polymers have apparent effect on the stoichiometry (CL:CD, mol:mol) of these ICs. All these analytical results indicate that the branch arms of the PCL polymers are incorporated into the hydrophobic a-CD cavities and their original crystalline properties are completely suppressed. Moreover, the inclusion complexation between two-arm linear or four-arm star-shaped PCL polymers and a-CD not only enhances the thermal stability of the guest PCL polymers but also improves that of a-CD.
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