Results 11 to 20 of about 23,170 (262)
Poly(vinyl alcohol)/poly(vinyl pyrrolidone) hydrogels for the cleaning of art [PDF]
Journal 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
Long Branching in Poly(vinyl acetate) and Poly(vinyl alcohol). V. Determination of the Long-Chain Branching in Poly(vinyl alcohol). [PDF]
Polymer Journal, 1976 Long branching in poly (vinyl alcohol) (PVA) was quantitatively determined from measurements of the intrinsic viscosity and gel-permeation chromato-graphy of derived poly(vinyl acetate) (PVAc) according to Kurata’s method. The average number of branch points per unit molecular weight, λ3, was observed to lie in the range of 10−6—10−5 for PVA obtained ...
Morishima, Yotaro +2 more
openaire +1 more source
Medžiagotyra, 2013 Successful vinyl acetate radical emulsion polymerization in water with different type of industrial grade poly(vinyl alcohol) were produced by semi continuous way. The poly(vinyl alcohol) type has crucial impact on dispersion rheological as well on films
Mindaugas DUBININKAS +2 more
doaj +1 more source
Fabrication and Characterization of Poly Vinyl Alcohol/ Poly Vinyl Pyrrolidone/MnTiO Nanocomposite Membranes for PEM Fuel Cells [PDF]
Iranica Journal of Energy and Environment, 2013 PVA (poly vinyl alcohol)-MnTiO (PM) and PVA-PVP (poly 3 vinyl pyrrolidone)-MnTiO3 (PPM) nanocomposite membranes have been prepared with solutions casting method. Glutaraldehyde (GA) was used as cross linking agent.
Abdol Mohammad Attaran +3 more
doaj +1 more source
Results in Physics, 2018 Flexible dielectric polymer composites with high dielectric permittivity and low dielectric loss have many applications in different areas of electronic industry.
Saira Ishaq +6 more
doaj +1 more source
Biodegradation of blend films PVA/PVC, PVA/PCL in soil and soil with landfill leachate
Brazilian 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
Effect of Chain Extender and Banana Fiber on Melt-Processing Properties of Poly (vinyl alcohol) [PDF]
Warasan 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
eXPRESS 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
International 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
Reduction of V4+ from V5+ using polymer as a surfactant for electrochemical applications
International Journal of Electrochemical Science, 2010 Vanadium dioxide nanowires and nanobelts were synthesized from vanadium pentoxide xerogel through a hydrothermal process. V5+ was reduced to V4+ by a polyblend of poly(vinyl pyrrolidone) (PVP) and poly(vinyl alcohol)(PVA), and by poly(vinyl alcohol)(PVA).
V S Reddy Channu +5 more
doaj +1 more source