静电纺丝
材料科学
甲基丙烯酸甲酯
制作
聚合物
原子转移自由基聚合
化学工程
溶剂
甲基丙烯酸酯
纳米纤维
聚合
聚甲基丙烯酸甲酯
高分子化学
复合材料
有机化学
化学
替代医学
病理
工程类
医学
作者
Ran Zhang,Tinghua Shang,Guang Yang,Xiaolong Jia,Qing Cai,Xiaoping Yang
标识
DOI:10.1016/j.colsurfb.2016.04.025
摘要
The direct fabrication of hybrid nanofibres composed of poly(methyl methacrylate)-grafted SiO2 (SiO2-PMMA) nanospheres via electrospinning was investigated in detail. SiO2-PMMA nanospheres were successfully prepared, with the SiO2 nanospheres synthesized via the Stober method, followed by in situ surface-initiated atom transfer radical polymerization of methyl methacrylate (MMA). Electrospinning was carried out with N,N-dimethylformamide (DMF) as the solvent to disperse SiO2-PMMA nanospheres. The size of the SiO2 core, the molecular weight of the PMMA shell and the concentration of the SiO2-PMMA/DMF solution all had substantial effects on the morphology and structure of electrospun nanofibres composed of SiO2-PMMA nanospheres. When these determining factors were well-tailored, it was found that one-dimensional necklace-like nanofibres were obtained, with SiO2-PMMA nanospheres aligned one by one along the fibre. The successful fabrication of nanofibres by directly electrospinning the SiO2-PMMA/DMF solution verified that polymer-grafted particles possess polymer-like characteristics, which endowed them with the ability to be processed into desirable shapes and structures.
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