Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (07): 8-12.doi: 10.13475/j.fzxb.20180709706

• Fiber Materials • Previous Articles     Next Articles

Influence of cooling temperature on structure and properties of polyvinylidene fluoride/ultrahigh-molecular-weight polyethylene blends hollow fiber membrane

LI Nana1, LU Qingchen2, YIN Weiwei2, XIAO Changfa1   

  1. 1. State Key Laboratory of Separation Membrane and Membranes Processes, Tianjin Polytechnic University, Tianjin 300387, China
    2. School of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
  • Received:2018-07-31 Revised:2019-04-08 Online:2019-07-15 Published:2019-07-25

RichHTML

0

PDF (PC)

100

Abstract:

In order to solve the problem of hard synchronous increase strength and permeability of polyvinylidene fluoride(PVDF) membrane, PVDF/ultrahigh-molecular-weight polyethylene(UHMWPE) blends hollow fiber membranes were prepared by thermally induced phase separation, using mineral oil and dibutyl phthalate as mixed diluents. The influences of different cooling temperatures on the morphology and pore structure of the membrane were investigated. Permeability and mechanical properties of hollow fiber membranes were characterized by gas flux, water flux and tensile strength. The results show that fibrillar UHMWPE increases the connectivity of PVDF spherulitic aggregates. The cooling temperature has a significant influence on the structure and properties of the blends hollow fiber membrane. With the cooling temperature increases, the time of phase separation and crystallization of blends system(PVDF/dibutyl phthalate and UHMWPE/mineral oil) are prolonged. The average pore size and porosity of the membrane increase, which improves the membrane permeability. However, the appearance of large pores and the decrease of UHMWPE fibrils reduce the mechanical properties of the membrane.

Key words: hollow fiber membrane, thermally induced phase separation, polyvinylidene fluoride, ultrahigh-molecular-weight polyethylene, cooling temperature

CLC Number: 

  • TB324

Fig.1

FESEM cross-section images of PVDF/UHMWPE blending hollow fiber membrane at different cooling temperatures"

Fig.2

Pore diameter distribution of PVDF/UHMWPE blending hollow fiber membrane at different cooling temperatures"

Tab.1

Average pore diameter and porosity of PVDF/UHMWPE blending hollow fiber membrane at different cooling temperatures"

冷却温度/℃ 孔隙率/% 平均孔径/nm
20 74.0 1 045
35 76.2 1 104
50 77.8 1 154
65 81.1 1 227

Tab.2

Flux and contact angle of PVDF/UHMWPE blending hollow fiber membrane at different cooling temperatures"

冷却温度/
℃		 气通量/
(L·m-2·h-1)		 水通量/
(L·m-2·h-1)		 接触角/
(°)
20 892 1 525 76.8
35 920 1 721 100.5
50 951 1 946 108.5
65 970 2 170 117.8

Tab.3

Tensile strength and elongation at break of PVDF/UHMWPE blending hollow fiber membrane at different cooling temperatures"

冷却温度/℃ 拉伸强度/MPa 断裂伸长率/%
20 4.7 182.3
35 4.2 160.2
50 3.5 150.6
65 3.1 128.1
[1] 顾蓓蓓, 胡啸林 . 中空纤维膜的现状与研究进展[J]. 广州化工, 2010,38(6):42-44.
GU Beibei, HU Xiaolin . Status-quo and research development of hollow fiber membrane[J]. Guangzhou Chemical Industry, 2010,38(6):42-44.
[2] ABED M R M, KUMBHARKAR S C, GROTH A M , et al. Ultrafiltration PVDF hollow fibre membranes with interconnected bicontinuous structures produced via a single-step phase inversion technique[J]. Journal of Membrane Science, 2012, 407-408:145-154.
[3] ZHOU Q H, WANG Z, SHEN H J , et al. Morphology and performance of PVDF tips microfiltration hollow fiber membranes prepared from PVDF/BDP/DOP systems for industrial application[J]. Journal of Chemical Technology & Biotechnology, 2015,91(6):1697-1708.
[4] ANTHONY J C . Methods for making microporous products: US, 4247498[P]. 1981-01-27.
[5] KIM J F, JUNG J T, WANG H H , et al. Microporous PVDF membranes via thermally induced phase separation (tips) and stretching methods[J]. Journal of Membrane Science, 2016,509:94-104.
[6] LI H J . Research on structure and performance of PVDF microporous membranes via thermally induced phase separation[J]. New Chemical Materials, 2008,36(2):42-43,46.
[7] 武利顺, 孙俊芬, 王庆瑞 . 凝固条件对聚偏氟乙烯膜结构的影响[J]. 纺织学报, 2004,25(6):12-14.
WU Lishun, SUN Junfen, WANG Qingrui . Effect of solidification conditions on the structure of polyvinylidene fluoride membrane[J]. Journal of Textile Research, 2004,25(6):12-14.
[8] 徐丽 . 疏水微孔膜的制备及其在膜蒸馏中的应用[D]. 杭州:浙江大学, 2007: 43-46.
XU Li . Fabrication of hydrophobic microporous membranes and their application in membrane distillation[D]. Hangzhou: Zhejiang University, 2007: 43-46.
[9] WANG L, HUANG D X, WANG X D , et al. Preparation of PVDF membranes via the low-temperature tips method with diluent mixtures: the role of coagulation conditions and cooling rate[J]. Desalination, 2015,361:25-37.
[10] CUI Z Y, DU C H, XU Y Y , et al. Preparation of porous PVDF membrane via thermally induced phase separation using sulfolane[J]. Journal of Applied Polymer Science, 2008,108(1):272-280.
[11] 周钱华 . 热致相分离法制备聚偏氟乙烯中空纤维膜[D]. 北京:北京工业大学, 2015: 38-39.
ZHOU Qianhua . Preparation of polyvinylidene fluoride hollow fiber membrane by thermally induced phase separation[D]. Beijing: Beijing University of Technology, 2015: 38-39.
[12] LI N N, LIU, F, LU Q C , et al. The preparation and study of poly(vinylidene fluoride)/ultrahigh-molecular-weight polyethylene/SiO2 hollow fiber membrane with network enhanced structure[J]. Reactive and Functional Polymers, 2016,109:64-69.
[13] WANG Z Y, WEI Y, ZHOU C X . Preparation of polyethylene microporous membranes with high water permeability from thermally induced multiple phase transitions[J]. Polymer, 2015,56:535-544.
[14] SONG H M, YU H W, ZHU L J , et al. Durable hydrophilic surface modification for PTFE hollow fiber membranes[J]. Reactive and Functional Polymers, 2017,114:110-117.
[15] WANG X D, ZHANG Q . Compatibilizing effect of novolak on toughness, crystallite and morphology of polyacetal and nitrile-butadiene rubber blends[J]. Chemical Research in Chinese Universities, 2001(4):673-677.
[16] ZHANG H, LU X L, LIU Z Y , et al. The unidirectional regulatory role of coagulation bath temperature on cross-section radius of the PVDF hollow-fiber membrane[J]. Journal of Membrane Science, 2018,550:9-17.
[1] MEI Shuo, LI Jinchao, LU Shiyan, XIAO Changfa, YANG Yong, FENG Xiangwei. Preparation and properties of high strength polyvinyl chloride hollow fiber membrane [J]. Journal of Textile Research, 2020, 41(09): 16-20.
[2] WU Qianqian, LI Ke, YANG Lishuang, FU Yijun, ZHANG Yu, ZHANG Haifeng. Preparation and properties of drug-loaded polyvinylidene fluoride wound dressings [J]. Journal of Textile Research, 2020, 41(01): 26-31.
[3] . Preparation and properties of polyvinylidene fluoride photothermal nanofiber membrane [J]. Journal of Textile Research, 2019, 40(08): 1-6.
[4] . Structure and properties of braided tube reinforced polylactic acid hollow fiber membranes [J]. Journal of Textile Research, 2019, 40(08): 20-26.
[5] . Preparation of graphene oxide / polyvinglidene fluoride composite filtration membrane and its filtration performance [J]. Journal of Textile Research, 2019, 40(04): 32-37.
[6] . Research status of flexible strain sensor based on electrospun nanofibers [J]. Journal of Textile Research, 2018, 39(12): 152-157.
[7] . Preparation and properties of photo-catalytic self-cleaning coated fabrics [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(05): 87-91.
[8] . Preparation and characterization of super hydrophobic aerogel coated ultra-high molecular weight polyethylene fabric [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(04): 93-99.
[9] . Study on the concentration and recovery of cellulose solvent N-methylmorpholine-N-oxide by vacuum menbrane distillation [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(08): 16-22.
[10] . Compression fatigue resistance of automobile cushion fabric based on three-dimensional warp-knitted spacer structure [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(05): 64-68.
[11] . Preparation and hydrophilic modification of polytetrafluoroethylene hollow fiber membrane [J]. Journal of Textile Research, 2016, 37(2): 35-38.
[12] . Development and application of polytetrafouoroethylene filtration membrane [J]. JOURNAL OF TEXTILE RESEARCH, 2015, 36(09): 149-153.
[13] . Preparation and characterization of polyurethane∕polyvinylidene fluoride waterproof permeable composite fabric [J]. JOURNAL OF TEXTILE RESEARCH, 2014, 35(5): 23-0.
[14] . Effect of slow coling temperature on structure and properties of PPS fibers [J]. JOURNAL OF TEXTILE RESEARCH, 2013, 34(8): 17-0.
[15] . Preparation of modified PVDF hollow fiber separating membrane [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(11): 31-36.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd