Preparation of polyurethane/poly(vinylidene fluoride) blend hollow fibre membrane using melt spinning and stretching

Abstract

Melt spinning and stretching process was used to prepare polyurethane/poly(vinylidene difluoride) (PU/PVDF) blend hollow fibre membrane in this study. Rheological properties of melts of PU, PVDF and their blends were studied by observing their melting viscosity changing with shear rate and temperature. Morphologies of PU/PVDF blend hollow fibre membranes with different mass ratios were also observed by SEM and results showed that PU/PVDF mass ratio of 3:1 was relatively better condition for membrane preparation. The forming mechanism of the interfacial microvoids in PU/PVDF blends was also investigated and PU/PVDF blend hollow fibre membrane with water flux of ∼2174 L m⁻² h⁻¹ was finally obtained under the pressure of 0·1 MPa.

Keywords

PU/PVDF blend Rheological property Melt spinning Hollow fibre membrane

Get full access to this article

View all access options for this article.

References

Qin

J-J.

, Cao

Y.-M.

and Oo

M.-H.

: J. Appl Polym. Sci. , 2006, 99, 430–435.

Wang

, Li

and Teo

W. K.

: J. Membr. Sci. , 20(K), 178. 13–33.

C.-H.

, Xu

Y.-Y.

and Zhu

B.-K.

: J Appl Polym. Sci. , 2007, 106, 1793–1799.

Matsuyama

, Okafuji

, Maki

, Teramoto

and Kubota

: J. Membr. Sci. , 2003, 223, 119–126.

Kim

J. J.

, Jang

T. S.

and Kwon

Y. D.

: J. Membr. Sci. , 1994, 93, 209–215.

Shen

L. Q.

, Xu

Z. K.

and Xu

Y. Y.

: J. Appl Polym. Sci. , 2002, 84. 203–210.

X. F.

and Xiao

C. F.

: Chn J. Polym. Sci , 2005, 23, 203–210.

Lue

S. J.

and Peng

S. H.

: J. Membr. Sci. , 2003, 222, 203–217.

Melnig

, Apostu

M. O.

, Tura

and Ciobanu

: J. Membr. Sci. , 2005, 267. 58–67.

10.

Wang

, Li

and Teo

W. K.

: J. Membr. Sci. , 1999, 163, 211–220.

11.

, Xiao

and An

: J. Mater. Sci. , 2007. 42. 6234 6239.