Potential applications of poly(vinyl alcohol)-congo red aqueous solutions and hydrogels as liquids for hydraulic fracturing

2008 ◽  
Vol 110 (2) ◽  
pp. 695-700 ◽  
Author(s):  
Isabel Vega ◽  
Emiliano Fernández ◽  
Carmen Mijangos ◽  
Norma D'Accorso ◽  
Daniel López
Keyword(s):  
Hydraulic Fracturing ◽  
Aqueous Solutions ◽  
Congo Red ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Potential Applications

Complexation of Poly(vinyl alcohol)-Congo Red Aqueous Solutions. 2. SANS and SAXS Studies on Sol-Gel Transition

1994 ◽  
Vol 27 (22) ◽  
pp. 6383-6388 ◽  
Author(s):  
Mitsuhiro Shibayama ◽  
Fumiyoshi Ikkai ◽  
Shunji Nomura
Keyword(s):  
Aqueous Solutions ◽  
Congo Red ◽  
Vinyl Alcohol ◽  
Sol Gel ◽  
Poly Vinyl Alcohol ◽  
Sol Gel Transition ◽  
Gel Transition

Complexation of Poly(vinyl alcohol)-Congo Red Aqueous Solutions. 1. Viscosity Behavior and Gelation Mechanism

1994 ◽  
Vol 27 (7) ◽  
pp. 1738-1743 ◽  
Author(s):  
Mitsuhiro Shibayama ◽  
Fumiyoshi Ikkai ◽  
Ryuji Moriwaki ◽  
Shunji Nomura
Keyword(s):  
Aqueous Solutions ◽  
Congo Red ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Gelation Mechanism ◽  
Viscosity Behavior

scholarly journals Composite Poly(vinyl alcohol)-Based Nanofibers Embedding Differently-Shaped Gold Nanoparticles: Preparation and Characterization

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1604
Author(s):  
Andrea Dodero ◽  
Maila Castellano ◽  
Paola Lova ◽  
Massimo Ottonelli ◽  
Elisabetta Brunengo ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Ad Hoc ◽  
Chemical Reduction ◽  
Chemical Properties ◽  
Single Step ◽  
Gold Nanostructures ◽  
Poly Vinyl Alcohol ◽  
Spherical Nanoparticles ◽  
Potential Applications ◽  
New Perspective

Poly(vinyl alcohol) nanofibrous mats containing ad hoc synthesized gold nanostructures were prepared via a single-step electrospinning procedure and investigated as a novel composite platform with several potential applications. Specifically, the effect of differently shaped and sized gold nanostructures on the resulting mat physical-chemical properties was investigated. In detail, nearly spherical nanoparticles and nanorods were first synthesized through a chemical reduction of gold precursors in water by using (hexadecyl)trimethylammonium bromide as the stabilizing agent. These nanostructures were then dispersed in poly(vinyl alcohol) aqueous solutions to prepare nanofibrous mats, which were then stabilized via a humble thermal treatment able to enhance their thermal stability and water resistance. Remarkably, the nanostructure type was proven to influence the mesh morphology, with the small spherical nanoparticles and the large nanorods leading to thinner well defined or bigger defect-rich nanofibers, respectively. Finally, the good mechanical properties shown by the prepared composite mats suggest their ease of handleability thereby opening new perspective applications.

Flow-induced crystalline precursors in entangled Poly(vinyl alcohol) aqueous solutions

Polymer ◽  
2021 ◽  
pp. 123960
Author(s):  
Chang Liu ◽  
Xinhong Yu ◽  
Yinghan Li ◽  
Xinyue Zhao ◽  
Quan Chen ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

Conformational changes in poly(vinyl alcohol)-graft-polyacrylamide in aqueous solutions vs graft content

2003 ◽  
Vol 203 (1) ◽  
pp. 201-206 ◽  
Author(s):  
Nataliya Kutsevol ◽  
Tatyana Zheltonozhskaya ◽  
Nataliya Melnik ◽  
Jean-Michel Guenet ◽  
Vladimir Syromyatnikov
Keyword(s):  
Aqueous Solutions ◽  
Conformational Changes ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

The role of electrostatic repulsion in the gelation of poly(vinyl alcohol)/borax aqueous solutions

Soft Matter ◽  
2018 ◽  
Vol 14 (32) ◽  
pp. 6767-6773 ◽  
Author(s):  
Jingjing Li ◽  
Zhijie Zhang ◽  
Xiao Cao ◽  
Yonggang Liu ◽  
Quan Chen
Keyword(s):  
Aqueous Solutions ◽  
Vinyl Alcohol ◽  
Linear Viscoelasticity ◽  
Poly Vinyl Alcohol ◽  
Electrostatic Repulsion

This study examined linear viscoelasticity of semidilute non-entangled poly(vinyl alcohol) (PVA) and borax aqueous solutions: one borax molecule dissociates into two B(OH)3 molecules and two B(OH)4− ions, and the latter can crosslink the PVA chains.

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