Journal ArticleDOI
Synthesis of Chemically Modified Polyvinyl Alcohol Membranes for Dehydration of Dioxane by Pervaporation
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In this article, three semi-interpenetrating network (SIPN) membranes were synthesized with different weight ratio of PVOH: HEMA, 1:0.25, SIPNI and SIPNIII for pervaporative dehydration of dioxane.Abstract:
Polyvinyl alcohol (PVOH) has been chemically modified by polymerizing hydroxyethylmethacrylate (HEMA) in aqueous solution of PVOH and finally crosslinking PVOH with glutaraldehyde to produce a semi-interpenetrating network (SIPN) membrane. Accordingly, three such SIPNs i.e., SIPNI, SIPNII, and SIPNIII were synthesized with different weight ratio of PVOH: HEMA i.e., 1:0.25 (SIPNI), 1:0.50 (SIPNII) and 1:0.75 (SIPNIII). These SIPN membranes were used for pervaporative dehydration of dioxane. PVOH without any chemical modification but crosslinked with the same amount of glutaraldehyde has also been used for this study for comparison. All the SIPN membranes were also characterized with various conventional methods like mechanical properties, DSC and TGA. Water permeability and water selectivity of the IPN membranes were found to be much higher than those of the crosslinked PVOH membrane which was not chemically modified. The permeability of the membranes were also found to increase with increase in t...read more
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Journal ArticleDOI
Poly(vinyl alcohol)/halloysite nanotubes bionanocomposite films: Properties and in vitro osteoblasts and fibroblasts response.
TL;DR: In vitro fibroblasts response demonstrated that both neat PVA and P VA/HNTs nanocomposite films were biocompatible and PVA/H NTs films favored to fibro Blasts attach and growth below 7.5 wt % of HNTs incorporated.
Journal ArticleDOI
Polymeric Nanocomposite Membranes for Next Generation Pervaporation Process: Strategies, Challenges and Future Prospects.
Sagar Roy,Nayan Ranjan Singha +1 more
TL;DR: This article evaluates and collaborates the current research towards the development of next generation nanomaterials (NMs) and embedded polymeric membranes with regard to its synthesis, fabrication and application strategies, challenges and future prospects.
Journal ArticleDOI
Synthesis of guar gum-g-(acrylic acid-co-acrylamide-co-3-acrylamido propanoic acid) IPN via in situ attachment of acrylamido propanoic acid for analyzing superadsorption mechanism of Pb(II)/Cd(II)/Cu(II)/MB/MV
Nayan Ranjan Singha,Manas Mohan Mahapatra,Mrinmoy Karmakar,Arnab Dutta,Himarati Mondal,Pijush Kanti Chattopadhyay +5 more
TL;DR: In this article, a smart environment-friendly and sustainable interpenetrating polymer network hydrogel has been synthesized by the grafting of guar gum (GG) and in situ adjunct allocation of 3-acrylamido propanoic acid (APA) during solution polymerization of acrylic acid (AA) and acrylamide (AM), using N,N′-methylenebisacryamide (MBA) and potassium persulfate (PPS)-sodium bisulfite (SBS) as a crosslinker and a
Journal ArticleDOI
Carbohydrate and collagen-based doubly-grafted interpenetrating terpolymer hydrogel via N-H activated in situ allocation of monomer for superadsorption of Pb(II), Hg(II), dyes, vitamin-C, and p-nitrophenol.
Madhushree Mitra,Manas Mohan Mahapatra,Arnab Dutta,Joy Sankar Deb Roy,Mrinmoy Karmakar,Mousumi Deb,Himarati Mondal,Pijush Kanti Chattopadhyay,Abhijit Bandyopadhyay,Nayan Ranjan Singha +9 more
TL;DR: Herein, guar gum (GG), a smart carbohydrate and protein-based doubly-grafted interpenetrating terpolymer hydrogel showing excellent physicochemical properties and recyclability was synthesized by in situ strategic allocation of AMPA during solution polymerization of AA and AM through systematic optimization of the amounts of components and reaction temperature for superadsorption.
Journal ArticleDOI
Dehydration of 1,4-dioxane by pervaporation using filled and crosslinked polyvinyl alcohol membrane
TL;DR: In this article, a polyvinyl alcohol (PVOH) membrane was modified both physically and chemically by incorporation of inorganic filler, sodium aluminosilicate and chemical crosslinking with maleic acid and glutaraldehyde.
References
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Book ChapterDOI
Permeation of Gases and Vapours in Polymers
TL;DR: The solution and transport behavior of low molecular weight substances in polymeric materials is a topic of interest for many fields of science and technology as discussed by the authors. But the importance and relevance of such behaviour has become more apparent in recent years with the accelerating development of separation membrane systems, highly impermeable or selectively permeable packaging or barrier films, and the overall increase in the use of polymeric material for diverse applications with consequent exposure to various environmental agents.
Journal ArticleDOI
Drug diffusion and binding in ionizable interpenetrating networks from poly(vinyl alcohol) and poly(acrylic acid)
TL;DR: It was concluded that drug diffusion may be impeded by associated drug binding, especially in IPN hydrogels containing high amounts of PAA.
Journal ArticleDOI
Separation of liquid mixtures by using polymer membranes. I. Permeation of binary organic liquid mixtures through polyethylene
TL;DR: In this paper, a special permeation cell was designed in order to study permeation rates at different temperatures ranging from 25 to 45°C, and it was found that the temperature dependence of the permeation rate for both pure compounds and mixtures could be expressed by Arrheniustype relationships.
Journal ArticleDOI
Pervaporation separation of aqueous mixtures using crosslinked polyvinyl alcohol membranes. iii, permeation of acetic acid-water mixtures
Robert Y. M. Huang,C.K. Yeom +1 more
TL;DR: In this article, the authors used chemically crosslinked poly (vinyl alcohol) (PVA) membranes which had been developed in their laboratory to perform pervaporation separation of acetic acid-water mixtures.
Journal ArticleDOI
Sodium montmorillonite clay loaded novel mixed matrix membranes of poly(vinyl alcohol) for pervaporation dehydration of aqueous mixtures of isopropanol and 1,4-dioxane
Susheelkumar G. Adoor,M. Sairam,Lata S. Manjeshwar,Kothapalli V S N Raju,Tejraj M. Aminabhavi +4 more
TL;DR: In this paper, PVA/Na+MMT-based mixed matrix membranes were used in pervaporation (PV) dehydration of aqueous solutions of isopropanol and 1,4-dioxane at 30°C.