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Date of Publication:2008-01-01

Journal:大连海事大学学报

Volume:34

Issue:1

Page Number:95-98

ISSN No.:1006-7736

Abstract:Two series of dihydroxyl-terminated poly-epsilon-caprolactone （PCL-diol）
   and poly-epsilon-caprolactone-poly （ethylene glycol）-
   poly-epsilon-caprolactone （PCL-PEG-PCL） were prepared via ringopening
   polymerization of epsilon-caprolactone using stannous octoate as
   catalyst and ethylene glycol or PEG as initiator. The chemical
   structures and properties of the resulting products were measured with
   FT-IR,~ 1 HNMR, DSC, GPC and XRD. The results indicate that the polymer
   molecular weights can be controlled by adjusting the ratio of monomer to
   initiator. DSC shows that the melting point increase and crystallinity
   of PCL-diol is improved from 58% to 72% with increasing of the polymer
   molecular weight and melting point of PCL-PEG-PCL rise up to 69.3℃ with
   increasing of the molecular weight of the PEG. Crystallinity of
   PCL-PEG-PCL is improved by introducing PEG, and microphase-separation in
   the products is observed by XRD.

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