Journal
COLLOIDS AND SURFACES B-BIOINTERFACES
Volume 144, Issue -, Pages 238-249Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2016.04.025
Keywords
SiO2 nanosphere; Surface functionalization; Electrospinning; Nanofibre
Funding
- National Natural Science Foundation of China [U1362205, 51373016]
- Natural Science Foundation of Jiangsu Province [BK20140271]
- Beijing Youth Talent Plan [YETP0492]
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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. (C) 2016 Elsevier B.V. All rights reserved.
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