Synthesis and properties of degradable poly(vinyl alcohol) hydrogel
作者： Congming Xiao , Gaoyan Zhou
DOI: 10.1016/S0141-3910(03)00100-9
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摘要: Abstract A novel degradable hydrogel has been prepared by condensing poly(vinyl alcohol) (PVA) with ELDA, a diacid derived from lactic acid. The structure of the ELDA crosslinking agent and crosslinked PVA–ELDA polymer characterized FTIR. glass transition temperature (Tg) PVA–ELDA, determined DSC, is found to increase crosslink ratio (CR). character water in was also examined which shows that can be classified as bound free water. percentage CR 0.0151, 0.0101 0.0050 87.7, 74.5 76.4% respectively. maximum equilibrium content 123%. After 3-day's immersion phosphate-buffer saline (PBS) (0.1M, pH 7.4) at 37 °C, weight loss about 12.5%, indicates it degradable.
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