Results 21 to 30 of about 1,052,861 (299)

Preparation of cyanobacteria-enhanced poly(vinyl)alcohol-based films with resistance to blue-violet light / red light and water.

open access: yesPLoS ONE, 2020
The harmful cyanobacteria blooms which usually form in spring and summer, cause global eutrophication of freshwater and coastal marine ecosystems. This study tried to utilize cyanobacteria as a raw material to produce biological poly(vinyl)alcohol-based ...
Sainan Chen   +9 more
doaj   +1 more source

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

Structural characterisation of printable noble metal/poly(vinyl-alcohol) nanocomposites for optical applications [PDF]

open access: yes, 2015
This work was conducted under the aegis of the Engineering and Physical Sciences Research Council (EPSRC) of the United Kingdom (EP/I004173/1). Amin Abdolvand is an EPSRC Career Acceleration Fellow at the University of Dundee.In order to enable ...
Hourd, A.C.   +5 more
core   +1 more source

Impact of Industrial Grade Modified PVA to Vinyl Acetate Semi-continuous Emulsion Polymerization and Properties of Final Product

open access: yesMedžiagotyra, 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

Long Branching in Poly(vinyl acetate) and Poly(vinyl alcohol). V. Determination of the Long-Chain Branching in Poly(vinyl alcohol). [PDF]

open access: yesPolymer 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

Water governs the mechanical properties of poly(vinyl alcohol)

open access: yes, 2021
The presence of water molecules can significantly determine the macroscopic mechanical property and microscopic chain dynamics of poly(vinyl alcohol) (PVA).
Fang, Zhengping   +7 more
core   +1 more source

Fabrication and Characterization of Poly Vinyl Alcohol/ Poly Vinyl Pyrrolidone/MnTiO Nanocomposite Membranes for PEM Fuel Cells [PDF]

open access: yesIranica 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

Aqueous colloidal processing and green sheet properties of lead zirconate titanate (PZT) ceramics made by tape casting [PDF]

open access: yes, 2004
An aqueous system for tape casting PZT ceramics was developed using poly (vinyl alcohol) binder, poly (propylene glycol) plasticizer, D3021 dispersant and Surfynol SE-F wetting agent. Screening experiments were performed to assess the stability of the
Alcock, Jeffrey R.   +2 more
core   +1 more source

Dielectric and impedance spectroscopic studies of three phase graphene/titania/poly(vinyl alcohol) nanocomposite films

open access: yesResults 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

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

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