Evolution of the precipitation kinetics, morphology, and permeation performance of phenolphthalein poly(ether sulfone) hollow-fiber membranes with polyvinylpyrrolidones of different molecular weights as additives

2011 ◽  
Vol 121 (4) ◽  
pp. 1961-1971 ◽  
Author(s):  
Wan-Zhong Lang ◽  
Lian-Feng Chu ◽  
Ya-Jun Guo
Keyword(s):  
Hollow Fiber ◽  
Hollow Fiber Membranes ◽  
Precipitation Kinetics ◽  
Molecular Weights ◽  
Fiber Membranes

scholarly journals Structure and Properties of PSf Hollow Fiber Membranes with Different Molecular Weight Hyperbranched Polyester Using Pentaerythritol as Core

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 383
Author(s):  
Min Liu ◽  
Long-Bao Zhao ◽  
Li-Yun Yu ◽  
Yong-Ming Wei ◽  
Zhen-Liang Xu
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Hollow Fiber ◽  
Pure Water ◽  
Esterification Reaction ◽  
Hollow Fiber Membranes ◽  
Water Contact ◽  
Molecular Weights ◽  
Hyperbranched Polyesters ◽  
Fiber Membranes

A homologous series of hyperbranched polyesters (HBPEs) was successfully synthesized via an esterification reaction of 2,2-bis(methylol)propionic acid (bis-MPA) with pentaerythritol. The molecular weights of the HBPEs were 2160, 2660, 4150 and 5840 g/mol, respectively. These HBPEs were used as additives to prepare polysulfone (PSf) hollow fiber membranes via non-solvent induced phase separation. The characteristic behaviors of the casting solution were investigated, as well as the morphologies, hydrophilicity and mechanical properties of the PSf membranes. The results showed that the initial viscosities of the casting solutions were increased, and the shear-thinning phenomenon became increasingly obvious. The demixing rate first increased and then decreased when increasing the HBPE molecular weight, and the turning point was 2660 g/mol. The PSf hollow fiber membranes with different molecular weights of HBPEs had a co-existing morphology of double finger-like and sponge-like structures. The starting pure water contact angle decreased obviously, and the mechanical properties improved.

Dual Layer Mixed Matrix Hollow Fiber Membranes for Outside-In Filtration of Human Blood Plasma

2020 ◽  
Author(s):  
O.E.M. ter Beek ◽  
M.K. van Gelder ◽  
C. Lokhorst ◽  
D.H.M. Hazenbrink ◽  
B.H. Lentferink ◽  
...  
Keyword(s):  
Blood Plasma ◽  
Human Blood ◽  
Hollow Fiber ◽  
Human Blood Plasma ◽  
Hollow Fiber Membranes ◽  
Mixed Matrix ◽  
Fiber Membranes

Inner-selective coordination nanofiltration hollow fiber membranes from assist-pressure modified substrate

2021 ◽  
Vol 626 ◽  
pp. 119186
Author(s):  
Qian Wang ◽  
Xin Wei ◽  
Guang-Rui Wang ◽  
Tian-Dan Lu ◽  
Qixun Shi ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes
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