Citation: ZHANG Lina, DU Yumin, KUMANOTANI JU. LIGHT SCATTERING OF POLYSACCHARIDE FROM LACQUER IN AQUEOUS SOLUTION[J]. Chinese Journal of Polymer Science, ;1989, 7(3): 252-257. shu

LIGHT SCATTERING OF POLYSACCHARIDE FROM LACQUER IN AQUEOUS SOLUTION

Received Date: 9 July 1988

The polysaccharide having weight-average molecular weight M_w=1. 09×10~5, isolated from the sap of lac trees (Vietnam), was separated into 12 fractions by aqueous-phase preparative gel permeation chromatography. The molecular weights and molecular weight distributions of the fractions were measured in aqueous 0.08M KCl/0.01 M NaAc and 0.4M KCl/0.05M NaAc at pH =7. 6 by light scattering, viscometry and gel permeation chromatography. The Mark-Houwink equation in aqueous 0.08M KCl/0.01M NaAc at 30℃ was found to be [η]=2.28×10-2M0.52w(cm3/g),which indicated the polysaccharide chain in the aqueous solution to be a spherical random coil.
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