Premium
Swelling and scattering investigations on chemically cross‐linked poly(vinyl alcohol) hydrogels
Author(s) -
Horkay Ferenc,
Burchard Walther,
Geissler Erik,
Hecht AnneMarie,
Zrinyi Miklós
Publication year - 1993
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19930760123
Subject(s) - self healing hydrogels , swelling , polyvinyl alcohol , scattering , materials science , polymer , small angle neutron scattering , vinyl alcohol , neutron scattering , light scattering , mixing (physics) , polymer chemistry , composite material , chemical engineering , optics , physics , quantum mechanics , engineering
Swelling and scattering measurements are reported from chemically cross‐linked polyvinyl alcohol) hydrogels and the corresponding semi‐dilute polymer solutions. The mixing free energy in the swollen network is found to be significantly smaller than that of the corresponding polymer solution at identical concentration. Static light scattering and small‐angle neutron scattering measurements indicate the presence of large‐scale static structures in the solution. Reasonable agreement is found between the osmotic moduli obtained from light scattering measurements and macroscopic osmotic observations.