Pervaporation performance of poly(vinyl alcohol)‐graft‐poly( N ‐hydroxymethyl acrylamide) membranes for dehydration of isopropyl alcohol‐water mixture

2021 ◽  
pp. 51976
Author(s):  
Fatma Kurşun Baysak ◽  
Nuran Işıklan
Keyword(s):  
Vinyl Alcohol ◽  
Isopropyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Water Mixture ◽  
Alcohol Water

Effect of surfactant on drying and rheology of poly (vinyl alcohol) – water coatings

2021 ◽  
pp. 1-13
Author(s):  
Raj Kumar Arya ◽  
D. Giribabu ◽  
Jyoti Sharma ◽  
Manju Rawat ◽  
Avinash Chandra ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Alcohol Water

scholarly journals Phase Equilibrium of Poly(acrylamide)–Poly(vinyl alcohol)–Water System

1982 ◽  
Vol 14 (7) ◽  
pp. 575-578 ◽  
Author(s):  
Le van Minh ◽  
Takao Ohtsuka ◽  
Hidehiko Soyama ◽  
Takuhei Nose
Keyword(s):  
Phase Equilibrium ◽  
Vinyl Alcohol ◽  
Water System ◽  
Poly Vinyl Alcohol ◽  
Alcohol Water ◽  
Poly Acrylamide

Effect of degree of saponification on the rheological properties of syndiotactic poly(vinyl alcohol)/ water solution

2002 ◽  
Vol 86 (2) ◽  
pp. 463-467 ◽  
Author(s):  
Won Seok Lyoo ◽  
In Seok Seo ◽  
Jeong Hyun Yeum ◽  
Won Sik Yoon ◽  
Byung Chul Ji ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Vinyl Alcohol ◽  
Water Solution ◽  
Poly Vinyl Alcohol ◽  
Alcohol Water

scholarly journals Synthesis of tetraalkyl thiuram disulfides using different oxidants in recycling solvent mixture

2012 ◽  
Vol 18 (1) ◽  
pp. 73-81 ◽  
Author(s):  
Milutin Milosavljevic ◽  
Aleksandar Marinkovic ◽  
Jelena Markovic ◽  
Danijela Brkovic ◽  
Milan Milosavljevic
Keyword(s):  
Isopropyl Alcohol ◽  
Level Structure ◽  
Reaction Medium ◽  
Solvent Mixture ◽  
Azeotropic Mixture ◽  
Water Mixture ◽  
Alcohol Water ◽  
High Yields ◽  
Industrial Level ◽  
Laboratory Synthesis

A new optimized laboratory synthesis of tetraalkyl thiuram disulfides, starting from dialkyl amines and carbon disulfide in presence of three oxidants (hydrogen peroxide, potassium peroxodisulfate and sodium hypochlorite) and appropriate reaction medium: two mixtures of isopropyl alcohol - water used in two consecutive syntheses, was presented in this work. First synthesis was performed in a recycled azeotropic mixture of isopropyl alcohol - water 87.7% - 12.3%, and second in a filtrate obtained after first synthesis, which was a mixture of isopropyl alcohol - water 70.4% - 29.6%. After the second synthesis and filtration, recycled azeotropic mixture isopropyl alcohol - water 87.7% - 12.3% was regenerated from the filtrate by rectification. Considering this, the technology for beneficial use of recycling isopropyl alcohol - water mixture as reaction medium for tetraalkyl thiuram disulfides synthesis was developed. Such concept contributes to extraordinary economical benefit of implemented optimal laboratory synthesis at semi-industrial level. High yields of tetraalkyl thiuram disulfides syntheses were obtained at both laboratory and semiindustrial level. Structure and purity of synthesized compounds were confirmed by elemental analysis, as well as FTIR, 1H and 13C NMR, and MS spectral data.

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