Institution of Engineering and Technology;Stevenage: John Wiley & Sons, Inc
摘要:
摘要： A comparative study utilising both continuous near-field electrospinning (CNFES) and conventional electrospinning processes of an electrospun polyvinylidene fluoride (PVDF)-based membranes (EPMs) is presented in this Letter. The fibre morphology and average fibre diameter (AFD) of the EPMs are observed by scanning electron microscopy. Differential scanning calorimetry (DSC) is used to compare the possible modifications in crystal structure and thermal properties. Fourier transform infrared spectroscopy is used to study the crystalline isomers of PVDF EPMs. Moreover, the CNFES electrospun fibres are revealed to have relatively higher crystallinity of 40.78%, as compared with conventional ones of 33.72%. However, DSC results indicate that both CNFES and conventional EPMs share similar thermographs in endothermic peaks extending from 156 to 174°C, despite the significant differences in AFD. Finally, the critical length of PVDF nanofibres is characterised experimentally and theoretical prediction of r ... z 20.5 is in well agreement with the experimental observations of r ... z 20.51.(ProQuest: ... denotes formulae/symbols omitted.) 出版者： Stevenage: John Wiley & Sons, Inc 出版日期： 2012-04-01 出處： Micro & nano letters, 2012-04, Vol.7 (4), p.376-379 版權： Copyright The Institution of Engineering & Technology Apr 2012 識別號： ISSN: 1750-0443 識別號： EISSN: 1750-0443 識別號： DOI: 10.1049/mnl.2012.0161
