Development of potentially biocompatible hydrogels with cylindrical pores prepared from polyvinyl alcohol and low‐molecular weight polyacrylic acid

2019 ◽  
Vol 59 (7) ◽  
pp. 1479-1488 ◽  
Author(s):  
Laura M. Sanchez ◽  
Vera A. Alvarez
Keyword(s):  
Molecular Weight ◽  
Polyvinyl Alcohol ◽  
Polyacrylic Acid ◽  
Low Molecular Weight ◽  
Cylindrical Pores

Expedient floating process for ultra-thin InGaZnO thin-film-transistors and their high bending performance

RSC Advances ◽  
2016 ◽  
Vol 6 (68) ◽  
pp. 63418-63424 ◽  
Author(s):  
Won Jun Kang ◽  
Cheol Hyoun Ahn ◽  
Myeong Gu Yun ◽  
Sung Woon Cho ◽  
Ye Kyun Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Molecular Weight ◽  
Surface Morphology ◽  
Polyvinyl Alcohol ◽  
Thin Film Transistors ◽  
Gate Oxide ◽  
Low Molecular Weight ◽  
Bending Performance ◽  
Good Surface ◽  
Oxide Tfts

Polyvinyl alcohol with low molecular weight exhibited good surface morphology and quick floating time for the fabrication of the top-gate oxide TFTs.

Vaginal Absorption of Polyvinyl Alcohol in Fischer 344 Rats

1990 ◽  
Vol 9 (2) ◽  
pp. 71-77 ◽  
Author(s):  
J.M. Sanders ◽  
H.B. Matthews
Keyword(s):  
Molecular Weight ◽  
Polyvinyl Alcohol ◽  
Low Molecular Weight ◽  
Fischer 344 Rats ◽  
Gi Tract ◽  
Molecular Weights ◽  
Fischer 344 ◽  
Human Dose ◽  
Wide Range ◽  
Intravaginal Administration

Polyvinyl alcohol (PVA) is a polymer with a wide range of molecular weights and uses. Recently, low molecular weight formulations of PVA have been used as components of contraceptive products designed for intravaginal administration in human females. Previous studies in animals have determined that little or no absorption of PVA occurs from the gastrointestinal (GI) tract. However, there is some concern that PVA of lower molecular weights might be absorbed across membranes of the reproductive tract. Consequently, this work has investigated the absorption of low molecular weight PVA across biological membranes of the reproductive and GI tracts of Fischer 344 rats. Oral administration of ten consecutive daily doses of 14C PVA resulted in little apparent absorption of the dose from the GI tract. In contrast, intravaginal administration of 14C PVA resulted in increasing concentrations of PVA-derived radioactivity in major tissues following one, three or ten daily doses of the estimated human dose of 3 mg/kg. PVA-derived radioactivity was concentrated mainly in the liver, reaching a peak greater than 1750 ng equivalents/g tissue 24 hours following ten daily doses. Over 300 ng equivalents/g tissue were still present in the liver 30 days following the last dose.

Physically crosslinked polyvinyl alcohol and gelatin interpenetrating polymer network theta-gels for cartilage regeneration

2015 ◽  
Vol 3 (48) ◽  
pp. 9242-9249 ◽  
Author(s):  
Tianxin Miao ◽  
Emily Julia Miller ◽  
Canaan McKenzie ◽  
Rachael Ann Oldinski
Keyword(s):  
Molecular Weight ◽  
Phase Separation ◽  
Polyvinyl Alcohol ◽  
Polymer Network ◽  
Cartilage Regeneration ◽  
Interpenetrating Polymer Network ◽  
Low Molecular Weight ◽  
Molecular Weight Polymer ◽  
Physically Crosslinked

Theta-gels are hydrogels that form during the solidification and phase separation of two dislike polymers, in which a low molecular weight polymer behaves as a porogen and is removed through dialysis.

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