材料科学
聚合物
紫外线
聚碳酸酯
静电纺丝
热稳定性
结晶度
吸收(声学)
复合材料
溶剂
玻璃化转变
纳米纤维
化学工程
紫外线
纤维
高分子化学
光电子学
有机化学
化学
工程类
作者
Thomas Baby,Tomlal Jose E,Gejo George,Vinitha Varkey,Shijo K. Cherian
标识
DOI:10.1016/j.polymertesting.2019.106103
摘要
An innovation will be recognized as successful only if it satisfies all phases of product development; i.e. from the specification to mass production. Therefore, a cost-effective production by keeping the best possible characteristics is vital in any Industry. Large scale production of polymer fibers with ultrafine morphology is such a challenge to the field of nanotechnology. The idea proposed here utilizes the versatile electrospinning technology for the preparation of uniform, beadless and ultraviolet light absorbing polycarbonate (PC) nanofibers. The average diameter limits to 114 nm and that too by using most convenient and comparatively less toxic solvent mixture. This method is simple and so far, it is not reported elsewhere. For THF-DMF system a PC concentration of 17 w/v% and for DCM-DMF system a PC concentration of 15 w/v% was found to be the optimum polymer concentration. The average fiber diameter and bead density were very much influenced by the viscosity, conductivity and concentration of the solution used for electrospinning. The PC fibers (PC concentration of 15 w/v % in DCM-DMF system) with lowest average diameter of 114 nm shows excellent ultraviolet absorption, semicrystalline nature, enhanced glass transition temperature and thermal stability.
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