Results 21 to 30 of about 88,383 (304)

Poly(vinyl alcohol)/poly(vinyl pyrrolidone) hydrogels for the cleaning of art [PDF]

open access: yesJournal of Colloid and Interface Science, 2019
The cleaning of modern and contemporary paintings is a delicate and challenging operation. Many contemporary paintings exhibit rough, clotted and pitted surfaces, where the removal of soil is difficult. Gels are among the most efficient tools to achieve controlled and efficient cleaning of works of art.
Nicole Bonelli   +4 more
openaire   +3 more sources

Biodegradation of blend films PVA/PVC, PVA/PCL in soil and soil with landfill leachate

open access: yesBrazilian Archives of Biology and Technology, 2011
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 variety of conditions by ...
Adriana de Campos   +2 more
doaj   +1 more source

Antibacterial activity of a chitosan-PVA-Ag+-Tobermorite composite for periodontal repair [PDF]

open access: yes, 2014
A polymer-mineral composite was prepared by solvent casting a mixture of chitosan, poly(vinyl alcohol), and Ag+-exchanged tobermorite in dilute acetic acid and characterised by scanning electron microscopy and Fourier transform infrared spectroscopy. The
Coleman, Aimee A.   +4 more
core   +2 more sources

Antimicrobial hydrogels based on autoclaved poly(vinyl alcohol) and poly(methyl vinyl ether-alt-maleic anhydride) mixtures for wound care applications [PDF]

open access: yes, 2016
Novel antimicrobial hydrogels with good mechanical and physical properties were synthesized by autoclaving aqueous mixtures of poly(vinyl alcohol) and poly(methyl vinyl ether-alt-maleic anhydride). The structure of these materials was studied by infrared
Abdelrahman   +45 more
core   +1 more source

Effect of Chain Extender and Banana Fiber on Melt-Processing Properties of Poly (vinyl alcohol) [PDF]

open access: yesWarasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, 2019
This research aims to study the effect of chain extender and banana fiber on melt processing of poly (vinyl alcohol). 0 and 5 %w/w of banana fiber and 0, 2 and 4 %w/w of chain extender were melt-blended with poly (vinyl alcohol) in an internal mixer at ...
Yottha Srithep
doaj  

The Use of Poly(vinyl alcohol)-based Hydrogels in Biomedical Applications [PDF]

open access: yes, 2018
Polymers have found increasing favor in biomedical applications due to the greater control that researchers can exert over their properties. Researchers have focused on the development of therapies using biologically compatible polymers due to their ...
Subramanian, Deepak
core   +1 more source

Investigation on the thermal properties of new thermo-reversible networks based on poly(vinyl furfural) and multifunctional maleimide compounds

open access: yeseXPRESS Polymer Letters, 2012
New thermo-reversible networks were obtained from poly(vinyl furfural) and multifunctional maleimide monomers by Diels-Alder (DA) and retro-DA reactions.
C. Gaina   +4 more
doaj   +1 more source

Multilayer structures based on annealed electrospun biopolymer coatings of interest in water and aroma barrier fiber-based food packaging applications [PDF]

open access: yes, 2018
In this research work, for the first time, a fiber-based packaging material was coated by annealed electrospun ultrathin fibers of poly(3-hydroxybutyrate), poly(vinyl alcohol), and polylactide.
Cabedo, Luis   +4 more
core   +2 more sources

Separation of Aqueous Isopropanol Through Chitosan/Poly (Vinyl Alcohol) Blended Membranes by Pervaporation

open access: yesInternational Islamic University Malaysia Engineering Journal, 2012
Blend membranes consisting of chitosan/poly (vinyl alcohol) (CS/PVA) were prepared from a solution casting method and characterized via the pervaporation separation of isopropanol-water mixtures.  The solution of pure chitosan was blended with poly(vinyl
S. H. Tan, A. L. Ahmad   +1 more
doaj   +1 more source

Post-harvest tomato plants and urban food wastes for manufacturing plastic films [PDF]

open access: yes, 2017
Poly(vinyl alcohol-co-ethylene) was compounded with 2-10% post-harvest tomato (PHT) plant powder and processed by single-screw extrusion to yield composite films. Upon increasing the filler content, the values of the mechanical properties indicators were
Evon, Philippe   +6 more
core   +4 more sources

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