Free volume and the mechanism of plasticization in water-swollen poly (vinyl alcohol)

RM Hodge, TJ Bastow, GH Edward, GP Simon… - …, 1996 - ACS Publications
Poly (vinyl alcohol), PVOH, films have been studied as a function of water content. The
states of water present in the polymer (bound or free) have been characterized and are a …

Ion dynamics and positron annihilation studies on polymer ceramic composite electrolyte system (PVA/NaClO4/Y2O3): application in electrochemical devices

C Chavan, RF Bhajantri, S Bulla, HB Ravikumar… - Ceramics …, 2022 - Elsevier
This study aimed to develop a framework to investigate the structural, dielectric, and
transport properties of a sequence-based PVA matrix polymer ceramic composite electrolyte …

Development of TiO2/polyvinyl alcohol-cellulose acetate nanocomposite reverse osmosis membrane for groundwater-surface water interfaces purification

ES Mansor, H Abdallah, AM Shaban - Materials Science and Engineering …, 2023 - Elsevier
The conventional water treatment processes have limits to overcome the gap between
available water sources and the water demand. So desalination is required to face this …

Physical and electrochemical properties of PVA/TiO2 nanocomposite membrane

EE Abdel‐Hady, HFM Mohamed… - Advances in Polymer …, 2018 - Wiley Online Library
A casting method becomes used for the preparation of the polyvinyl alcohol (PVA)/TiO2
nanocomposite. Characterization of the casting membranes was done using Fourier …

The impact of plasticizer and degree of hydrolysis on free volume of poly (vinyl alcohol) films

RJ Fong, A Robertson, PE Mallon, RL Thompson - Polymers, 2018 - mdpi.com
The effect of plasticizer species and the degree of hydrolysis (DH) on the free volume
properties of poly (vinyl alcohol)(PVA) were studied using positron annihilation lifetime …

Effect of Al2O3 on Nanostructure and Ion Transport Properties of PVA/PEG/SSA Polymer Electrolyte Membrane

HFM Mohamed, EE Abdel-Hady, MMY Abdel-Moneim… - Polymers, 2022 - mdpi.com
Polymer electrolyte membrane (PEM) fuel cells have the potential to reduce our energy
consumption, pollutant emissions, and dependence on fossil fuels. To achieve a wide range …

Improvement of the Structure and Physicochemical Properties of Polylactic Acid Films by Addition of Glycero-(9, 10-trioxolane)-Trialeate

O Alexeeva, A Olkhov, M Konstantinova… - Polymers, 2022 - mdpi.com
Glycero-(9, 10-trioxolane)-trioleate (ozonide of oleic acid triglyceride, OTOA) was introduced
into polylactic acid (PLA) films in amounts of 5, 10, 30, 50, and 70% w/w. The morphological …

Non‐fluorinated PVA/SSA proton exchange membrane studied by positron annihilation technique for fuel cell application

S Awad, EE Abdel‐Hady… - Polymers for …, 2021 - Wiley Online Library
Abstract Poly (vinyl alcohol)(PVA) with sulfosuccinic acid (SSA) membrane was prepared
with different concentrations of SSA (wt.%) and thermally crosslinked successfully at 100° C …

Application of positron annihilation technique to reverse osmosis membrane materials

A Shimazu, K Ikeda, T Miyazaki, Y Ito - Radiation Physics and Chemistry, 2000 - Elsevier
Positron annihilation lifetime spectroscopy has been adopted as a new approach for
studying vacancies of reverse osmosis membrane materials composed of cellulose acetate …

Investigation of the free volume characteristics of PEO based solid state polymer electrolyte by means of positron annihilation spectroscopy

P Utpalla, SK Sharma, K Sudarshan, M Sahu, PK Pujari - Solid State Ionics, 2019 - Elsevier
Ion conduction in poly (ethylene oxide), PEO, based electrolytes are explained considering
the ion movement coupled with polymer segmental motions or free volume. Herein, we …