TY - JOUR
T1 - Influence of cellulose/[Bmim]Cl solution on the properties of fabricated NIPS PVDF membranes
AU - Ma, Bomou
AU - Yang, Jing
AU - Sun, Qisong
AU - Jakpa, Wizi
AU - Hou, Xiuliang
AU - Yang, Yiqi
N1 - Funding Information:
The authors greatly acknowledge the financial support from the Enterprise university-research prospective program Jiangsu Province (No. BY2016022-08) and the Fundamental research funds for the central universities (Nos. JUSRP51723B, JUSRP51505, JUSRP11502). Yang also appreciates USDA [National Agriculture and Food Initiative, Hatch Act, Multistate Research Project S-1054 (NEB37-037)] and Agricultural Research Division at the University of Nebraska-Lincoln for their support.
Publisher Copyright:
© 2017, Springer Science+Business Media New York.
PY - 2017/8/1
Y1 - 2017/8/1
N2 - In this study, composite membranes were prepared from mixed solution of polyvinylidene fluoride (PVDF) and cellulose via the non-solvent-induced phase separation (NIPS) method. N, N-dimethylacetamide (DMAc) and 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) were used as the solvent for PVDF and cellulose, respectively. SEM and in situ scanning techniques were used to investigate the morphology of the prepared membranes. The results showed that viscose cellulose/[Bmim]Cl solution acted as a porogenic agent during the membrane preparation process. Hydrophilicity of the composites was evaluated by water contact angle, moisture regain and equilibrium water uptake, which demonstrated that the wettability of the membranes was associated with the hydrophilic group and the roughness of the surface. Most importantly, the α → β transformation in PVDF matrix was demonstrated from the results of WAXD, FT-IR and DSC. The quantitative analysis indicated that the β-phase content in PVDF reached 90.1% when cellulose content was 5%, which is higher than many published references and was ascribed to the cooperation of cellulose and ionic liquid. Besides, the crystallinity, thermal stability and mechanical properties of the composite membranes were studied as well.
AB - In this study, composite membranes were prepared from mixed solution of polyvinylidene fluoride (PVDF) and cellulose via the non-solvent-induced phase separation (NIPS) method. N, N-dimethylacetamide (DMAc) and 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) were used as the solvent for PVDF and cellulose, respectively. SEM and in situ scanning techniques were used to investigate the morphology of the prepared membranes. The results showed that viscose cellulose/[Bmim]Cl solution acted as a porogenic agent during the membrane preparation process. Hydrophilicity of the composites was evaluated by water contact angle, moisture regain and equilibrium water uptake, which demonstrated that the wettability of the membranes was associated with the hydrophilic group and the roughness of the surface. Most importantly, the α → β transformation in PVDF matrix was demonstrated from the results of WAXD, FT-IR and DSC. The quantitative analysis indicated that the β-phase content in PVDF reached 90.1% when cellulose content was 5%, which is higher than many published references and was ascribed to the cooperation of cellulose and ionic liquid. Besides, the crystallinity, thermal stability and mechanical properties of the composite membranes were studied as well.
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U2 - 10.1007/s10853-017-1150-2
DO - 10.1007/s10853-017-1150-2
M3 - Article
AN - SCOPUS:85018724729
VL - 52
SP - 9946
EP - 9957
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 16
ER -