3th WCSET-2014 at Nepal

Special Session at Ho Chi Minh City University of Technology, Vietnam:

Title:            Effect of a-Cyclodextrin inclusion complex on the crystallization of 3-Arm Poly (e- Caprolactone)
Authors:       Bich-Tram, Truong-Le, Po-Da Hong, Minh-Vien, Le
Abstract:     The polymorphic crystallization behavior of 3-arm poly (ε-caprolactone) (PCL) in the presence of nucleation agents as α-cyclodextrin inclusion complex (IC) with PCL was studied. Polymeric inclusion complexes between α-CD and PCL was successfully prepared and characterized quantitatively with various analytical methods. Formation of α-CD-PCL IC was characterized by FT-IR, DSC, WAXD, and 1H NMR. The WAXD studies showed that all of the α-CD-ICs adopt a channel structure. Both DSC, FT-IR and1H NMR results suggested that the polymer chains were partially complexed by α-CDs. The nucleation effect of α-CD-IC on the crystallization of PCL was also investigated with DSC and POM. We found that the α-CD-IC of a given polymer could effectively enhance the crystallization of the polymer itself. This result may be attributable to the limited mobility of the uncovered part of the polymer segments constrained by its interior part residing in the α- CD cavity, leading to the nucleation of polymer crystallization.

Keywords:   Inclusion Complex, 3-Arm Poly(Ε-Caprolactone), Α-Cyclodextrin, Nucleating Agent, Crystallization Behavior
Pages:         728-732

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