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Title: Dynamics in poly vinyl alcohol (PVA) based hydrogel: Neutron scattering study

Results of quasielastic neutron scattering measurements carried out on Poly Vinyl Alcohol (PVA) based hydrogels are reported here. PVA hydrogels are formed using Borax as a cross-linking agent in D{sub 2}O solvent. This synthetic polymer can be used for obtaining the hydrogels with potential use in the field of biomaterials. The aim of this paper is to study the dynamics of polymer chain in the hydrogel since it is known that polymer mobility influences the kinetics of loading and release of drugs. It is found that the dynamics of hydrogen atoms in the polymer chain could be described by a model where the diffusion of hydrogen atoms is limited within a spherical volume of radius 3.3 Å. Average diffusivity estimated from the behavior of quasielastic width is found to be 1.2 × 10{sup −5} cm{sup 2}/sec.
Authors:
; ;  [1] ;  [2] ;  [3]
  1. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 40085 (India)
  2. Department of Physics, St. Xavier’s College, Mapusa, Goa 403507 (India)
  3. Department of Physics, Goa University, Taleigao Plateau, Goa 403206 (India)
Publication Date:
OSTI Identifier:
22490215
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMS; BIOLOGICAL MATERIALS; BORAX; CROSS-LINKING; DIFFUSION; HEAVY WATER; HYDROGELS; HYDROGEN; KINETICS; LOADING; MOBILITY; NEUTRON DIFFRACTION; POTENTIALS; PVA; QUASI-ELASTIC SCATTERING; SOLVENTS; SPHERICAL CONFIGURATION