R. Murakami et al., GEL-PERMEATION CHROMATOGRAPHIC PROPERTIES OF POLY(VINYL ALCOHOL) GEL PARTICLES PREPARED BY FREEZING AND THAWING, Journal of chromatography, 678(1), 1994, pp. 180-182
The gel permeation chromatographic properties of poly(vinyl alcohol) g
el particles prepared by a freezing-and-thawing procedure were investi
gated. From the calibration graph established with poly(ethylene glyco
l) and poly(ethylene oxide) samples, it was found that the value of th
e excluded molecular mass increased from 2500 (original) to 6000 (fift
een repeated cycles of freezing and thawing). In addition, the treated
gels showed a favourable pressure-resisting property.