具有光致变色功能的PA6纳微米纤维的制备与性能  

Preparation and properties of PA6 nano-micron fibers with photochromic function

作　　者：西鹏[1] 常晓康 XI Peng;CHANG Xiaokang(School of Material Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学材料科学与工程学院,天津300387

出　　处：《天津工业大学学报》2024年第3期1-8,共8页Journal of Tiangong University

基　　金：国家自然科学基金面上项目(51373118);天津市自然科学基金重点项目(18JCZDJC38300)。

摘　　要：为制备具有光致变色功能的纳微米纤维,以萘并吡喃(NA)为变色单元,以甲基丙烯酸甲酯(MMA)为聚合物基质单体,以二氧化硅(SiO_(2))为包覆层,制备了光致变色纳微米微球PMMA/NA@SiO_(2),然后将PMMA/NA@SiO_(2)纳微米微球引入到尼龙6的静电纺丝溶液中,通过对静电纺丝过程中的各工艺参数的优化,对PA6的基本形貌进行了在线调控,成功制备了直径分布较均匀的PA6纳微米变色纤维。场发射扫描电镜和紫外可见光分光光度计的测试结果表明:PMMA/NA@SiO_(2)的直径范围在100~210 nm之间;在PMMA/NA@SiO_(2)质量分数小于10%时,纤维样品的形貌无明显变化,变色性能随添加的变色材料的增加而增强,所制备的样品变色性能和纤维形貌最好,在紫外光照射后会呈现出较好的变色性能和耐疲劳性;通过紫外灯照射发现,相对于λ=365 nm的紫外光,λ=254 nm的紫外光对该光致变色纳微米纤维的变色性能影响较大。In order to prepare nano-micron fibers with photochromic function,the photochromic nano-micron microspheres PMMA/NA@SiO_(2) were prepared with naphthopyran(NA)as the color-changing unit,methyl methacrylate(MMA)as the polymer matrix monomer,and silica(SiO_(2))as the coating layer.Then,PMMA/NA@SiO_(2) nano-micron microspheres were introduced into the electrospinning solution of nylon 6.The basic morphology of PA6 was adjusted online by optimizing each parameter in the electrostatic spinning process,and the PA6 nano-micron color-changing fiber with uniform diameter distribution was successfully prepared.The results of field emission SEM and UV-visible spectrophotometer show that the diameter of PMMA/NA@SiO_(2) ranges from 100 nm to 210 nm.When the additive amount of PMMA/NA@SiO_(2) is less than 10%,the morphology of the fiber sample has no obvious change,and the discoloration performance is enhanced with the increase of the additive amount of discoloration material.It leads to the best discoloration performance and morphology of sample.The prepared sample showed better discoloration and fatigue resistance after ultraviolet irradiation.It was found that the ultraviolet light ofλ=254 nm has a greater influence on the color-changing performance of the photochromic nano-micron fiber compared to the ultraviolet light ofλ=365 nm by ultraviolet lamp irradiation.

关 键 词：静电纺丝 光致变色材料 纳微米纤维 尼龙6 

分 类 号：TS102.528.4[轻工技术与工程—纺织工程]