引用本文:
沈云, 黄丹, 蒋学. 新型紫外线吸收剂的合成及其在聚乳酸超细纤维膜中的应用[J]. 应用化学,
2012, 29(7): 740-744.
doi:
10.3724/SP.J.1095.2012.00347
Citation: SHEN Yun, HUANG Dan, JIANG Xue. Synthesis of a Novel UV Absorbent and Its Application in Polylactic Acid Superfine Fibrous Membranes[J]. Chinese Journal of Applied Chemistry, 2012, 29(7): 740-744. doi: 10.3724/SP.J.1095.2012.00347
Citation: SHEN Yun, HUANG Dan, JIANG Xue. Synthesis of a Novel UV Absorbent and Its Application in Polylactic Acid Superfine Fibrous Membranes[J]. Chinese Journal of Applied Chemistry, 2012, 29(7): 740-744. doi: 10.3724/SP.J.1095.2012.00347
新型紫外线吸收剂的合成及其在聚乳酸超细纤维膜中的应用
摘要:
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-D-β-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230~350 nm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。
English
Synthesis of a Novel UV Absorbent and Its Application in Polylactic Acid Superfine Fibrous Membranes
Abstract:
A novel UV absorbent,(3-hydroxy-4-benzoyl)phenyl 2,3;4,6-di-O-cyclohexylidene-D-β-mannopyranoside(UV-O-DHM),was synthesized using 2,4-dihydroxy-benzophenone(UV-O) and D-mannose as raw materials.The compound exhibited high decomposition temperature(Td) at 372.6℃ and possessed good thermal stability.The biodegradable anti-UV polylactic acid(PLA) superfine fibrous membranes were prepared via electro-spinning through mixing UV-O-DHM into dichloromethane solution of PLA,and the features of the fiber were clearly characterized by scanning electron microscope.The fiber has uniform diameter of 3~4 μm and is evenly covered by the nano-porous.The UV-O-DHM/PLA superfine fiber has good ultraviolet absorption performance.With increasing concentration of UV-O-DHM,UV transmittance(T%) decreased,and when the mass fraction of UV-O-DHM was 1.1%,T% was almost 0 in 230~350 nm,and the UV protection level was better than that of UV-O/PLA superfine fiber in 365~380 nm.
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Key words:
- electro-spinning
- / polylactic acid
- / superfine fibrous membranes
- / UV absorbent
- / mannosidase
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