Ultra-thin films of syndiotactic-rich poly-vinyl alcohol (s-PVA) with several proteins and polysaccharides were prepared by the bubble and frame methods using a mixed dilute aqueous solution (1.5g/dL).The mixed amount of Β-cyclodextrin (Β-CD) was the largest among these proteins and polysaccharides giving a weight ratio (Β-CD/s-PVA) of 1. The ratios of silk fibroin(SF), lysozyme, pepsin, and pectin to s- PVA were 0.58, 0.40, 0.35, and 0.35, respectively. For the Β-CD/s-PVA and SF/s-PVA blend thin films, the phase separation was observed. © 1990 Steinkopff.
