Computer simulation studies on the polymer-induced modification of water properties in polyacrylamide hydrogels
Article Abstract:
Research was conducted to examine the interactions between SPC/E water molecules and polyacrylamide in polymer gels and solutions using computer simulations. To investigate various polymer environments, several polymer structures with different concentrations, pore sizes and connectivity properties were used. Results demonstrate that the structure of water is enhanced in the presence of the polymer network but the effect is short-ranged. Findings also show the strong H-bond-determined structure of water in the presence of the polar side groups.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Optical properties of aligned rod-shaped gold particles dispersed in poly(vinyl alcohol) films
Article Abstract:
The function of the film elongation was studied through the analysis of the polarization spectra of template-synthesized colloidal gold rods with aspect ratios ranging from L/d=1.8 to 49 embedded in poly(vinyl alcohol) films. Only one resonance band instead of two absorbance bands as found for randomly distributed gold rods were shown by the polarization absorbance spectra of aligned systems. The rods were completely oriented when the film was stretched 4-6 times its original length as revealed by the visible and near-infrared spectra.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Thermal stability of proteins in aqueous polyol solutions: role of the surface tension of water in stabilizing effect of polyols
Article Abstract:
Experiments were conducted to investigate the relationship between the surface tension of water and the thermal stability of five different proteins in aqueous polyol solutions. The proteins examined such as RNase A, alpha-chymotrypsinogen, lysozyme and cytochrome c exhibited varied physicochemical properties. The pH level ranged from 2.5-7.0. Surface tension and thermal denaturation measurements were taken. The findings confirmed a correlation between the surface tension of water and the thermal stability of proteins.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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