Synthesis and characterization of positive volume phase transition hydrogel membrane prepared using a cellulose substrate

Thermo-responsive hydrogels display swell-collapse behavior in response to changing temperature. While the hydrogels themselves have many applications such as environmental and chemical separations, the hydrogel can be incorporated within a membrane substrate to improve its mechanical properties and...

Full description

Saved in:
Bibliographic Details
Published in:Separation science and technology 2023-04, Vol.58 (6), p.1099-1110
Main Authors: Mah, Evan, Ghosh, Raja
Format: Article
Language:English
Subjects:
Acrylamide
Acrylic acid
Cellulose
Chemical separation
Copolymers
Crosslinking
hydrogel
Hydrogels
Ligands
Mechanical properties
Membrane
Membrane permeability
Membranes
Monomers
Permeability
phase transition
Phase transitions
Polymers
separation
Substrates
Synthesis
thermo-responsive membrane
Transition temperature
Transition temperatures
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Thermo-responsive hydrogels display swell-collapse behavior in response to changing temperature. While the hydrogels themselves have many applications such as environmental and chemical separations, the hydrogel can be incorporated within a membrane substrate to improve its mechanical properties and expand the opportunities for development and implementation. The present work describes synthesis of positive volume transition temperature responsive poly(acrylamide-co-acrylic acid) hydrogels on cellulose paper substrates. Effects of factors including co-monomer ratios, degree of crosslinking and mass loading are assessed for Series A random copolymer hydrogels in terms of permeability response. Examination of the membranes is then extended to investigate inter-penetrating networks (IPN) between acrylamide and acrylic acid homo-polymer hydrogels. Series B membranes explore the impact of nonpolar ligands on temperature response through addition of butyl methacrylate co-monomer. For both random copolymer and IPN hydrogel membranes, mass loading dominates permeability performance, though certain criteria must be met. Performance of the Series A membranes was found to be ideal when monomer ratio was 1:1 and there was a lower degree of crosslinking. Addition of butyl methacrylate did not appear to have a consistent impact on the membrane response, appearing to be tied to the degree of crosslinking for random copolymer hydrogel coatings.
ISSN:0149-6395
1520-5754
DOI:10.1080/01496395.2023.2179493