The thermal gravimetric studies for polymer samples of polyvinyl chloride (PVC) and polyvinyl alcohol (PVA) obtained by treatment with ionic liquid [bmim]Br

2014 ◽  
Vol 71 (6) ◽  
pp. 1349-1358 ◽  
Author(s):  
Preeti A. Tomar ◽  
S. M. Yadav ◽  
Gaurav R. Gupta
Keyword(s):  
Ionic Liquid ◽  
Polyvinyl Alcohol ◽  
Polyvinyl Chloride ◽  
Thermal Gravimetric

Ionic liquid–polyvinyl chloride ionomer for highly selective isolation of basic proteins

Talanta ◽  
2010 ◽  
Vol 81 (1-2) ◽  
pp. 637-642 ◽  
Author(s):  
Yang Shu ◽  
Xu-Wei Chen ◽  
Jian-Hua Wang
Keyword(s):  
Ionic Liquid ◽  
Polyvinyl Chloride ◽  
Selective Isolation ◽  
Basic Proteins

Efficient pseudo five-component synthesis of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives promoted by a novel ionic liquid catalyst

2018 ◽  
Vol 73 (3-4) ◽  
pp. 191-195 ◽  
Author(s):  
Zahra Abshirini ◽  
Abdolkarim Zare
Keyword(s):  
Ionic Liquid ◽  
Disulfonic Acid ◽  
Thermal Gravimetric ◽  
One Pot ◽  
Mild Conditions ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
The One ◽  
C Nmr

AbstractIn this research, initial production and characterization of a novel Brønsted-acidic ionic liquid, namely,N,N,N′,N′-tetramethylethylenediaminium-N,N′-disulfonic acid hydrogen sulfate ([TMEDSA][HSO4]2), has been described (characterization was achieved using Fourier-transform infrared spectroscopy,1H nuclear magnetic resonance (NMR),13C NMR, and mass and thermal gravimetric spectra). Thereafter, utilization of [TMEDSA][HSO4]2as a highly effectual catalyst for the synthesis of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives through the one-pot pseudo five-component reaction of phenylhydrazine (2 eq.) with ethyl acetoacetate (2 eq.) and arylaldehydes (1 eq.) in relatively mild conditions, has been reported.

Effect of the bis-imidazolium-based poly(ionic liquid) on the microstructure and the properties of AAEMs based on polyvinyl alcohol

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 25311-25318 ◽  
Author(s):  
Yi Yang ◽  
Na Sun ◽  
Panpan Sun ◽  
Liqiang Zheng
Keyword(s):  
Ionic Liquid ◽  
Polyvinyl Alcohol ◽  
Ionic Channel ◽  
Poly Ionic Liquid

The conductivity of AAEMs can be improved by building the ionic channel based on bis-imidazolium-based poly(ionic liquid).

Preparation of Two Novel Ionic Electroconductive Polyurethanes Functionalized with the Backbone of Ionic Liquid

2013 ◽  
Vol 668 ◽  
pp. 259-262
Author(s):  
Ding Jun Zhang ◽  
Chao Yun Qu ◽  
Yu Xian Chen
Keyword(s):  
Electrical Conductivity ◽  
Differential Scanning Calorimetry ◽  
Ionic Liquid ◽  
Surface Resistance ◽  
High Yield ◽  
Gravimetric Analysis ◽  
Thermal Gravimetric ◽  
Facile Synthesis ◽  
Scanning Calorimetry ◽  
Structures And Properties

The facile synthesis of two new Ionic electroconductive polyurethanes with the framework of ionic liquids, i.e., PUR-T: synthesized with isocyanate TDI; PUR-H: synthesized with isocyanate HDL, are described. Their structures and properties were characterized by Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), Differential scanning calorimetry (DSC) and the surface resistance meter. The effects of the different kinds of isocyanate on electrical conductivity of PUR were also investigated. It was found that their electrical conductivity can be optimized by changing the reaction temperature. The PUR-H, which exhibits an electrical conductivity of 1.0×104 Ω surface resistance, could be obtained in high yield, up to 65% at 90 oC for 12h.

Comparison of the Structures of Stretched Linear Polymers

1945 ◽  
Vol 18 (4) ◽  
pp. 763-771
Author(s):  
Maurice L. Huggins
Keyword(s):  
Polyvinyl Alcohol ◽  
Polyvinyl Chloride ◽  
Linear Polymers ◽  
Interatomic Distances ◽  
Polyvinylidene Chloride ◽  
X Ray

Abstract Published x-ray data from crystalline selenium and tellurium and from stretched sulfur (amorphous), polyethylene, polyisobutylene, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyoxymethylene, polyoxyethylene, polyethylene disulfide, polyethylene tetrasulfide, and polyphosphonitrile chloride are compared. In most cases the experimental identity-distance in the direction of the chain axes and the expected interatomic distances and interbond angles are found to be in agreement with the assumption that the chain atoms form a regular spiral, unidirectional in each chain and of uniform pitch. Apparent exceptions are briefly discussed.

scholarly journals Tertiary Amine-Mediated Polyvinyl Alcohol Membrane Over the Porous Support of Polyvinyl Chloride Membrane for CO2 Separation

2021 ◽  
Vol 8 (2) ◽  
pp. 28-34
Author(s):  
Mushtaq Asim ◽  
Hashmi Saud ◽  
Nadeem Saad ◽  
Awan Zahoor ◽  
Ali Zaeem Uddin
Keyword(s):  
Polyvinyl Alcohol ◽  
Polyvinyl Chloride ◽  
Scale Up ◽  
Porous Membranes ◽  
Porous Support ◽  
Environmental Friendliness ◽  
Acid Gas ◽  
Dimethyl Acetamide ◽  
Carbon Dioxide Co2 ◽  
Polyvinyl Chloride Membrane

Great attention has been paid to membrane-based separation technology in various separation fields, including gas separation. It provides the benefits of energy efficiency, environmental friendliness, easy scale-up, and convenience in operation. Different division advancements are being utilized for the expulsion of acid gas carbon dioxide (CO2). The aim of this work is to synthesis the membrane using polyvinyl alcohol (PVA) with treatment (WT) and without treatment (WOT) of the additive that is triethanolamine (TEA), to study the effect of additive on the permeance of membrane towards CO2 and the morphology changes of each membrane. In this research, virgin PVA and PVA with TEA were cast upon the porous support membrane of polyvinyl chloride (PVC). PVA was used as the polymer matrix, and TEA was used as a CO2 facilitating agent. Distilled water was used as a solvent for TEA and PVA in preparing the solution. Dimethyl acetamide (DMAc) and Tetrahydrofuran (THF) were used as solvents for PVC porous membranes. These membranes were tested on CO2 to find out the permeability and flux rates (J). For the morphology of the membrane, we performed SEM; for thermal analysis, we performed DSC and TGA, and for the strength, we performed the tensile test. The results reveal that the presence of TEA changes the morphology and thermal behavior increases the strength and the permeability of CO2. In a nutshell, the presence of TEA enhanced the performance and the morphology of the membrane.

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