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Martins JN, Bianchi O, Wanke CH, Castel CD, Oliveira RVB. Effects of POSS addition on Non-isothermal crystallization and morphology of PVDF. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0871-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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He F, Fan J, Chan LH. Preparation and characterization of electrospun poly(vinylidene fluoride)/poly(methyl methacrylate) membrane. HIGH PERFORM POLYM 2014. [DOI: 10.1177/0954008314531030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work, nanofibrous poly(vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA) membranes with different PMMA contents from 10 wt% to 20 wt% were prepared by electrospinning. The morphology of resultant membranes was investigated using scanning electron microscopy. It was found that the morphology of PVDF/PMMA electrospun nanofibers in the membrane was highly dependent on the solvent used during the electrospinning process. PVDF/PMMA nanofibers with beads were formed in the electrospun membrane when N, N-dimethylformamide (DMF) solvent was used due to its low evaporation rate. Uniform PVDF/PMMA nanofibers without beads in the electrospun membranes were obtained by DMF–acetone mixed solvent. The crystallization behavior of PVDF in the electrospun PVDF/PMMA membranes was investigated using differential scanning calorimetry and Fourier transform infrared spectroscopy. The β form crystalline structure was the major crystalline phase of PVDF in electrospun PVDF/PMMA membranes, and PMMA may suppress the formation of α crystalline phase of PVDF. The crystallinity degree of PVDF in the electrospun PVDF/PMMA membranes was lower than that of the electrospun PVDF membrane, and the annealing could effectively improve the crystallinity degree of PVDF in electrospun membranes. Moreover, it was found that the annealing has no adverse effect on the low density, high porosity, and water vapor permeability of electrospun membranes.
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Affiliation(s)
- Fuan He
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming, China
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY, USA
| | - Jintu Fan
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY, USA
| | - Laiwa Hellen Chan
- Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
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Horibe H, Sasaki Y, Oshiro H, Hosokawa Y, Kono A, Takahashi S, Nishiyama T. Quantification of the solvent evaporation rate during the production of three PVDF crystalline structure types by solvent casting. Polym J 2013. [DOI: 10.1038/pj.2013.75] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Horibe H, Hosokawa Y, Oshiro H, Sasaki Y, Takahashi S, Kono A, Nishiyama T, Danno T. Effect of heat-treatment temperature after polymer melt and blending ratio on the crystalline structure of PVDF in a PVDF/PMMA blend. Polym J 2013. [DOI: 10.1038/pj.2013.53] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chang CM, Hsu KY, Liu YL. Matrix-polymer-functionalized multiwalled carbon nanotubes as a highly efficient toughening agent for matrix polymers. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23112] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Morphological, viscoelastic and thermal properties of poly(vinylidene Fluoride)/POSS nanocomposites. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2011.10.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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