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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

沈云,黄丹*,蒋学   

  1. (江南大学生态纺织教育部重点实验室 无锡 214122)
  • 收稿日期:2011-08-08 修回日期:2011-10-31 出版日期:2012-07-10 发布日期:2012-07-10
  • 通讯作者: 黄丹，教授; Tel/Fax:0510-85981195; E-mail:huangdan6@163.com; 研究方向：有机合成、精细化学品合成和高分子材料的合成及应用
  • 基金资助:
    江南大学生态纺织教育部重点实验室开放基金资助项目(KLET0901)

Synthesis of a Novel UV Absorbent and Its Application in Polylactic Acid Superfine Fibrous Membranes

SHEN Yun, HUANG Dan*, JIANG Xue   

  1. (Key Laboratory of Eco-textile,Ministry of Education,Jiangnan University,Wuxi 214122,China)
  • Received:2011-08-08 Revised:2011-10-31 Published:2012-07-10 Online:2012-07-10

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被引次数

1

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。

关键词: 静电纺丝, 聚乳酸, 超细纤维膜, 紫外线吸收剂, 甘露糖苷

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.

Key words: electro-spinning, PLA, superfine fibrous membranes, UV absorbent, mannosidase

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