以D-甘露糖和2,4-二羟基二苯甲酮(UV-O)为原料,合成了新型的紫外线吸收剂(3-羟基-4-苯甲酰基)苯基-2,3;4,6-二-O-亚环己基-Dβ-吡喃甘露糖苷(UV-O-DHM),其完全分解温度可达372.6℃,具有很好的热稳定性.将UV-O-DHM均匀地掺入聚乳酸(PLA)的二氯甲烷溶液中,通过静电纺丝制得了可生物降解的抗紫外线PLA超细纤维膜.采用扫描电子显微镜观察了纤维形貌,纤维的粗细均匀,直径为3～4 μm,且纤维表面有均匀的纳米孔结构.随着PLA纤维中UV-O-DHM浓度的增大超细纤维的紫外辐射透过率降低.当UV-O-DHM的掺入量为1.1％时,在230 ～350nm范围内,透过率基本接近于0,同时在365 ～380 nm的紫外光范围内抗紫外辐射效果明显优于同等条件下的UV -O/聚乳酸纤维.
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