Title of article
Synthesis and characterization of functional l-lactic acid/citric acid oligomer
Author/Authors
Fanglian Yao، نويسنده , , Quing Yun Bai، نويسنده , , Wei Chen، نويسنده , , Xiaoyan An، نويسنده , , Kangde Yao، نويسنده , , Pingchuan Sun، نويسنده , , Hai Lin، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
7
From page
1895
To page
1901
Abstract
Oligomers of l-lactic acid and citric acid (PLCA) were synthesized by reacting lactic acid with citric acid in the presence of stannous chloride. The chemical compositions of these multicarboxylated oligomers were verified by FT-IR and 1H-NMR spectroscopy. The thermal characteristics of the oligomers, such as glass transition temperature Tg, melting temperature Tm and melting enthalpy, were confirmed by DSC. The crystallinity of the oligomers were determined by DSC and WXRD. Meanwhile, the acid–base surface characteristics of PLCA have been determined by contact angle. The results implicated that these oligomers may be used to entrap the cospecies on PLLA surface in tissue engineering.
Keywords
Citric acid , Copolymer , Poly(L-lactic acid) , Surface properties
Journal title
European Polymer Journal(EPJ)
Serial Year
2004
Journal title
European Polymer Journal(EPJ)
Record number
1212443
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