SWELLING AND SCATTERING INVESTIGATIONS ON CHEMICALLY CROSS-LINKED POLY(VINYL ALCOHOL) HYDROGELS

Authors
HORKAY F BURCHARD W GEISSLER E HECHT AM ZRINYI M
Citation
F. Horkay et al., SWELLING AND SCATTERING INVESTIGATIONS ON CHEMICALLY CROSS-LINKED POLY(VINYL ALCOHOL) HYDROGELS, Die Makromolekulare Chemie. Macromolecular symposia, 76, 1993, pp. 145-154
Citations number
22
Categorie Soggetti
Polymer Sciences
Journal title
Die Makromolekulare Chemie. Macromolecular symposia → ACNP
ISSN journal
02580322
Volume
76
Year of publication
1993
Pages
145 - 154
Database
ISI
SICI code
0258-0322(1993)76:<145:SASIOC>2.0.ZU;2-Y
Abstract
Swelling and scattering measurements are reported from chemically cros s-linked poly(vinyl alcohol) hydrogels and the corresponding semi-dilu te polymer solutions. The mixing free energy in the swollen network is found to be significantly smaller than that of the corresponding poly mer solution at identical concentration. Static light scattering and s mall-angle neutron scattering measurements indicate the presence of la rge-scale static structures in the solution. Reasonable agreement is f ound between the osmotic moduli obtained from light scattering measure ments and macroscopic osmotic observations.