Effect of additives on the morphology and properties of poly(vinylidene fluoride) blend hollow fiber membrane prepared by the thermally induced phase separation method

Rajabzadeh, Saeid; Cui, Liang; Ohmukai, Yoshikage; Maruyama, Tatsuo; Matsuyama, Hideto

doi:10.1016/j.memsci.2012.08.013

Cited by 85 publications

(35 citation statements)

References 29 publications

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“…The thickness of this selective layer is gradually increased with PVP content in the dope solution. Rajabzadeh et al 43 reported the improved tensile strength for PVDF/PVP blend membranes especially at high concentrations. This is ascribed to the formation of a dense skin layer and interconnected structure on the outer surface and inside of the PVDF/PVP membrane.…”

Section: Resultsmentioning

confidence: 99%

Effect of Poly(vinyl pyrrolidone) on Antifouling Properties of Asymmetric Poly(ethylene‐co‐vinyl alcohol) Membranes

2014

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Poly(ethylene‐co‐vinyl alcohol)/poly(vinyl pyrrolidone) (EVAL/PVP) blend membranes with antifouling properties were prepared by nonsolvent induced phase separation. Residual PVP in the sample was calculated by infrared spectroscopic data and confirmed by thermogravimetric analysis. The effect of residual PVP on hydrophilicity and permeation characteristics of the membranes was evaluated. Porosity and equilibrium water content of the membranes were influenced by the addition of PVP. The effect of protein fouling on flux using bovine serum albumin as a model system was studied in detail. The residual PVP content could enhance the antifouling property of the membrane. All membranes proved to have sufficient mechanical strength to withstand pressure‐driven filtrations.

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Section: Resultsmentioning

confidence: 99%

Effect of Poly(vinyl pyrrolidone) on Antifouling Properties of Asymmetric Poly(ethylene‐co‐vinyl alcohol) Membranes

2014

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“…The HR hollow fiber membrane consists of the same polymer in two layers prepared by HR process, which the matrix membrane is fabricated by the melt-spinning cold-stretching (MSCS) or thermally induced phase separation (TIPS) method and the functional outer layer is fabricated by the NIPS method. The structure of the membrane prepared by MSCS and TIPS methods was more compact than NIPS method which gave the HR membrane the excellent mechanical property [10,11].…”

Section: Introductionmentioning

confidence: 97%

Study on interface structure and performance of homogeneous-reinforced polyvinyl chloride hollow fiber membranes

et al. 2015

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“…However, the hydrophobic characteristic of PVDF is a limitation in some applications. For example, membrane fouling caused by hydrophobic interactions results in rapid water flux decline and high energy-consumption, especially when the wastewater contains natural organic matter (NOM), proteins and micro-organisms (Rajabzadeh et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Effect of Poly (N- Vinypyrrolidone) on the Non-Isothermal Crystallization Kinetics and Viscoelastic Properties of PVDF Films

Mashak

Ghaee

Ravari

2016

Braz. J. Chem. Eng.

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-Poly(vinylidene fluoride) (PVDF) and PVDF blends with various molecular weights of poly (Nvinylpyrrolidone) (PVP) films were prepared in dimethyl formamide through the solution casting method. Non-isothermal melt crystallization studies of PVDF films were carried out by cooling the molten samples at different temperatures using differential scanning calorimetry (DSC). The obtained films have been characterized by dynamic mechanical thermal analysis (DMTA). Crystallization kinetics of PVDF films were successfully described by the Jeziorney, Mo and Ziabicki models. The Ozawa equation was found to be invalid for describing the crystallization kinetics. Kinetic parameters such as t 1/2 , Z c and F(T) indicated that the crystallization rate decreased for PVDF/PVP films as compared to neat PVDF films and was affected by the molecular weight of PVP. The results based on Ziabicki's model revealed that the addition of PVP decreased the ability of PVDF to crystallize under non-isothermal melt crystallization conditions. The activation energy was calculated through Friedman and advanced isoconversional methods. Results showed that the addition of PVP to PVDF films caused an increase in activation energy. By comparing DMTA results of PVDF/PVP blends with neat PVDF films, it could be concluded that blending PVDF with PVP caused an increase in the glass transition temperature (T g ) while the storage modulus was decreased.

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Effect of additives on the morphology and properties of poly(vinylidene fluoride) blend hollow fiber membrane prepared by the thermally induced phase separation method

Cited by 85 publications

References 29 publications

Effect of Poly(vinyl pyrrolidone) on Antifouling Properties of Asymmetric Poly(ethylene‐co‐vinyl alcohol) Membranes

Effect of Poly(vinyl pyrrolidone) on Antifouling Properties of Asymmetric Poly(ethylene‐co‐vinyl alcohol) Membranes

Study on interface structure and performance of homogeneous-reinforced polyvinyl chloride hollow fiber membranes

Effect of Poly (N- Vinypyrrolidone) on the Non-Isothermal Crystallization Kinetics and Viscoelastic Properties of PVDF Films

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