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Fabrication of microfiltration membranes from polyisobutylene/polymethylpentene blends
Author(s) -
Ignatenko Viktoria Y,
Anokhina Tatyana S,
Ilyin Sergey O,
Kostyuk Anna V,
Bakhtin Danila S,
Antonov Sergey V,
Volkov Alexey V
Publication year - 2020
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5932
Subject(s) - microfiltration , membrane , materials science , fabrication , chemical engineering , solvent , filtration (mathematics) , polymer chemistry , chromatography , composite material , chemistry , organic chemistry , medicine , biochemistry , statistics , alternative medicine , mathematics , pathology , engineering
An approach for fabrication of microfiltration membranes by solvent extraction of one of the immiscible components from a polymer blend was developed. Poly(4‐methyl‐1‐pentene) (PMP) was the membrane material, and poly(isobutylene) (PIB) was the extractable component. The PIB content varied in the wide range 0–45 wt%, and all blends could be melted and processed at a temperature of 240 °C. A rheological study demonstrated a pronounced non‐Newtonian behavior of PMP/PIB blends and their very low viscosity due to interlayer slip. With a PMP content of 55 and 60 wt%, it was possible to fabricate microfiltration membranes with a water permeability of 31 and 3.7 m 3 m −2 h –1 bar –1 , respectively. The microfiltration membranes based on both compositions demonstrated good rejection performance at the level of 93%–98% for submicron particles of phthalocyanine dye with a size of 240 nm. These results indicate that the PMP/PIB system can be utilized for fabrication of filtration membranes by means of 3D printing followed by solvent extraction. © 2019 Society of Chemical Industry