Synthesis and hydrolysis of poly(vinyl acetals) derived from poly(vinyl alcohol) and 2,6-dichlorobenzaldehyde

1983 ◽  
Vol 16 (2) ◽  
pp. 291-296 ◽  
Author(s):  
Etienne Schacht ◽  
Guido Desmarets ◽  
Eric Goethals ◽  
Thomas St. Pierre
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Vinyl Acetals ◽  
Hydrolysis Of

scholarly journals Poly(Vinyl Alcohol) Recent Contributions to Engineering and Medicine

2020 ◽  
Vol 4 (4) ◽  
pp. 175
Author(s):  
Dorel Feldman
Keyword(s):  
Vinyl Alcohol ◽  
Dye Removal ◽  
Chemical Separation ◽  
Drug Carriers ◽  
Synthetic Polymers ◽  
Synthetic Polymer ◽  
Poly Vinyl Alcohol ◽  
Numerous Application ◽  
Separation Element ◽  
Hydrolysis Of

Poly(vinyl alcohol) (PVA) is a thermoplastic synthetic polymer, which, unlike many synthetic polymers, is not obtained by polymerization, but by hydrolysis of poly(vinyl acetate) (PVAc). Due to the presence of hydroxylic groups, hydrophilic polymers such as PVA and its composites made mainly with biopolymers are used for producing hydrogels that possess interesting morphological and physico-mechanical features. PVA hydrogels and other PVA composites are studied in light of their numerous application for electrical film membranes for chemical separation, element and dye removal, adsorption of metal ions, fuel cells, and packaging. Aside from applications in the engineering field, PVA, like other synthetic polymers, has applications in medicine and biological areas and has become one of the principal objectives of the researchers in the polymer domain. The review presents a few recent applications of PVA composites and contributions related to tissue engineering (repair and regeneration), drug carriers, and wound healing.

Effects of SiO2 and In Situ Crosslinking on the Swelling and Thermal Properties of Poly(vinyl Alcohol)/SiO2 Hybrid Films

2011 ◽  
Vol 266 ◽  
pp. 180-183 ◽  
Author(s):  
Jie Liu ◽  
Ke Yong Tang
Keyword(s):  
Vinyl Alcohol ◽  
Sio2 Film ◽  
Poly Vinyl Alcohol ◽  
Swelling Ratio ◽  
Hybrid Films ◽  
Initial Stage ◽  
In Situ Crosslinking ◽  
Hydrolysis Of ◽  
Thermal Stability Of

Poly(vinyl alcohol) (PVA)/SiO2 hybrid films were prepared through hydrolysis of tetraethoxysilane (TEOS) in the presence of PVA solution, followed by the in-situ crosslinking with formaldehyde (HCHO) in acidic circumstance. The swelling and thermal gravimetric (TG) analysis was employed to evaluate the influence of SiO2 and crosslinking on the properties of the hybrid films. The results indicate that SiO2 affects effectively the swelling property and thermal stability of the hybrid films because of both the filling and crosslinking effects of SiO2. With increasing the crosslinking time, the swelling ratio at equilibrium of the hybrid films decreases. The swelling ratio at equilibrium of the hybrid films is sensitive to the SiO2 content, which is similar to the swelling ratio at equilibrium (65~75%) for PVA and PVA/SiO2 hybrid films with enough crosslinking time (12h). Compared to the film without in-situ crosslinking, the crosslinked PVA/SiO2 film showed a lower swelling ratio at equilibrium and an increased diffusion coefficient at the initial stage of swelling.

Hydrolysis of sucrose in the presence of partially sulfonated poly(vinyl alcohol)

1986 ◽  
Vol 24 (10) ◽  
pp. 533-536 ◽  
Author(s):  
Shuji Matsuzawa ◽  
Kazuo Yamaura ◽  
Kohji Yamamoto ◽  
Toyomi Katoh ◽  
Shinobu Kawaguchi ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Hydrolysis Of ◽  
Sulfonated Poly

Poly(vinyl alcohol) obtained by hydrolysis of poly(vinyl silyl ethers) and poly(vinyl ethers) synthesized with indenyltitanium trichloride

2005 ◽  
Vol 90 (2) ◽  
pp. 264-271 ◽  
Author(s):  
Isidro Palos ◽  
Gregorio Cadenas-Pliego ◽  
Sergei Ya. Knjazhanski ◽  
Enrique J. Jiménez-Regalado ◽  
Edgar G. De Casas ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Vinyl Ethers ◽  
Silyl Ethers ◽  
Hydrolysis Of
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