Discrimination-Learning Sets1 1This chapter was supported by Grant M-4890 from the National Institute of Mental Health, U. S. Public Health Service. The author wishes to acknowledge, with appreciation, the assistance of R. G. W. Miles.

Miles, Raymond C.

doi:10.1016/b978-1-4832-2820-4.50009-3

Cited by 20 publications

(1 citation statement)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the DS of CA decreases, its biodegradation rate increases. CA has ester bonds and glycosidic linkages in its structure, and it is conceivable that these bonds of CA are susceptible to hydrolysis by acid/base catalysts 6–9. Research in our laboratory was carried out to clarify the hydrolysis behavior of CA films (DS = 2.5) in acidic or basic solution at room temperature 10.…”

Section: Introductionmentioning

confidence: 99%

Deacetylation behavior of binary blend films of cellulose acetate and various polymers

Yamashita

Endō

2006

J of Applied Polymer Sci

View full text Add to dashboard Cite

For binary blend films of cellulose acetate (CA) and various polymers, the elution behavior of the polymers from the CA films in different environments (i.e., soil, water) was examined. For the CA film containing poly-(ethylene glycol) (PEG), the PEG eluted to the periphery of the film completely. On the other hand, polyvinylpyrrolidone blended with CA remained in the CA film. A CA film containing acrylic acid was prepared, and this film was heated. The elution of acrylic acid was inhibited by its polymerization. These results suggested that the internal polymers were capable of remaining in the CA film by polymer entanglement. Second, we examined the deacetylation and biodegradation behavior of CA films containing polymers with a phosphoric acid moiety in the side chain, such as poly(2-hydroxyethyl methacrylate phosphoric acid ester)[poly(HEMA-P)]. Poly(HEMA-P) had the ability to deacetylate the CA, and the biodegradation rate of the CA films containing poly(HEMA-P) increased in comparison with that of the nonadditive CA films. The elution of internal 2-hydroxyethyl methacrylate phosphoric acid ester was inhibited by the copolymerization with 2-hydroxyethyl methacrylate or crosslinking. In the case of both 2-hydroxyethyl methacrylate phenyl phosphoric acid ester and 10-methacryloyloxydecyl dihydrogen phosphate, the acetonesoluble polymers were obtained by radical polymerization in a mixture of acetone and water.

show abstract

Section: Introductionmentioning

confidence: 99%