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Mostrando ítems 1-10 de 1806
Preparação e caracterização de filme de PVA/Quitosana/Colágeno visando a aplicação como curativo cutâneo
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Ciência dos Materiais - PPGCM-SoCâmpus Sorocaba, 2017-06-28)
One of strong associations between polymers as biomaterials are in field of skin reparation. Polymers are utilized for this purpose, some such as poly (vynil alcohol) (PVA) are used due to characteristics such as ...
The effect of molecular weight and hydrolysis degree of poly(vinyl alcohol)(PVA) on the thermal and mechanical properties of poly(lactic acid)/PVA blends
(Associação Brasileira de Polímeros, 2018-06)
The effect of molecular weights and hydrolysis degrees (HD) of polyvinyl alcohol (PVA) on thermal and mechanical properties and crystallinity of polylactic acid (PLA)/PVA blends was investigated. Blends were prepared by ...
Biodegradation of blend films PVA/PVC, PVA/PCL in soil and soil with landfill leachate
(Brazilian Archives of Biology and Technology, 2011-12-01)
This study investigated the biodegradation of blends films of poly(vinyl alcohol)/poly(vinyl chloride) (PVA/PVC) and poly(vinyl alcohol)/poly(caprolactone) (PVA/PCL) blends films prepared with dimethylformamide under a ...
Biodegradation of blend films PVA/PVC, PVA/PCL in soil and soil with landfill leachate
(Brazilian Archives of Biology and Technology, 2011-12-01)
This study investigated the biodegradation of blends films of poly(vinyl alcohol)/poly(vinyl chloride) (PVA/PVC) and poly(vinyl alcohol)/poly(caprolactone) (PVA/PCL) blends films prepared with dimethylformamide under a ...
Highly Structured Polyvinyl Alcohol Porous Carriers: Tuning Inherent Stability and Release Kinetics in Water
(American Chemical Society, 2018-02)
Polyvinyl alcohol (PVA) porous carriers were prepared by means of ice templating of aqueous solutions containing of 90 kD and/or 16 kD PVA. The carriers were loaded with traces of a colored probe (methyl orange) to screen ...
Improving barrier properties of HDPE using PVA as clay modifier
(Science & Knowledge Publishing Corporation Limited, 2013-10)
In this work it was prepared nanocomposites of high density polyethylene (HDPE) with different loads of modified organoclay with polyvinylalcohol (PVA). Modified organoclay was obtained by in situ polymerization of vinyl ...
Preparation of KOH-doped PVA/PSSA solid polymer electrolyte for DMFC: the influence of TiO 2 and PVP on performance of membranes
(Fuel CellsBrasil, 2016-01-22)
The development of low cost alkaline anion solid exchange membranes requires high ionic conductivity, low liquid uptake, strong mechanical properties and chemical stability. PVA/PSSA blends cross-linked with glutaraldehyde ...
Protonic conductivity and thermal properties of cross-linked PVA/TiO2 nanocomposite polymer membranes
(2019-10-15)
Nanocomposite polymer membranes based on PVA/TiO2 were prepared by a solution casting method. Glutaraldehyde solution (GA) was used as linking agent to improve the chemical, thermal and physical properties of the membranes. ...
Electrodeposition of PVA-protected PtCo electrocatalysts for the oxygen reduction reaction in H2SO4
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
In this paper we report the electrosynthesis of PVA-protected PtCo films (PVA = poly(vinylalcohol)) and their activities towards the oxygen reduction reaction (ORR). PtCo electrodeposits were potentiostatically obtained ...