Films of pseudoisocyanine iodide in a cellulose acetate matrix were prepared by spin coating and characterized by UV/Vis absorption and fluorescence spectroscopies. The comparison with self-supported films of the same dye enabled analysing the role of the matrix in the aggregation of pseudoisocyanine iodide ([PIC]I). It was proved that cellulose acetate is a suitable support for [PIC]I J-aggreg...

Recently, IL/cosolvent systems have generated a lot of interest as cellulose-dissolving solvents and reaction media for various kinds of cellulose modification. In the present study, both 1-allyl-3-methylimidazolium chloride (AmimCl)/dimethyl sulfoxide (DMSO) and AmimCl/N,N-dimethylformamide (DMF) systems were employed to synthesize cellulose acetate by transesterification. Microcrystalline cel...

In the present study, we describe a novel one-step method to prepare water-soluble cellulose acetate (WSCA) with higher degree of polymerization values (DP = 650-680) by in situ activation of carboxyl group in ionic liquid. First of all, cellulose was dissolved in 1-ethyl-3-methylimidazolium acetate (EmimAc) and reacted with dichloroacetyl chloride (Cl2AcCl) in order to make cellulose dichloroa...

A thermostable acetylxylan esterase gene, TTE0866, which catalyzes the deacetylation of cellulose acetate, was cloned from the genome of Caldanaerobacter subterraneus subsp. tengcongensis. The pH and temperature optima were 8.0 and 60 °C. The esterase was inhibited by phenylmethylsulfonyl fluoride. A mixture of the esterase and cellulolytic enzymes efficiently degraded insoluble cellulose aceta...

VAN ZYL, LULU C. , 1974. Serum protein fractions as determined by cellulose acetate electrophoresis in Schistosoma mattheei infested sheep. Onderstepoort J. vet . Res. 41, 714 (1974). The serum protein fraction values of Dorper sheep infested with Schistosoma mattheei were determined by cellulose acetate electrophoresis at regular intervals for 15 months. Statistical analyses showed that increa...

A rapid microtechnic utilizing cellulose acetate membranes for the electrophoretic separation of LDH isoenzymes is described. The use of cellulose acetate for both migration and reagent application representsa relatively inexpensiveand reproducible method which avoids many of the inherent problems associatedwith agar gels. The technic can be used for the analysisof a relatively large number of ...

A short review with 49 references describes the electrospinninng (ES) process for polysaccharides, cellulose and chitosan, and their derivatives, including cellulose acetate and hydroxypropyl cellulose. A majority of applied studies adopted a two step-process, in which the cellulose acetate was used for the first ES process, followed by acetyl group removal to regenerate cellulose thin fibers. ...

Serum containing normal and abnormal levels of alkaline phosphatase activity were assayed for total enzyme activity, then fractionated by electrophoresis on cellulose acetate membranes for 20 mm. The new substrate, phenolphthalein monophosphate, was employed to locate the isoenzymes on the cellulose acetate membranes and to measure their activity by eluting and scanning procedures. The sensitiv...

We describe for the first time a multi-antisera applicator to be used on cellulose acetate membranes with immunoelectrophoresis on a solid support. The new procedure overcomes previous shortcomings of immunoelectrophoresis on cellulose acetate membranes and permits rapid analyses of 11 samples on single “standard”-size membranes with a substantialsaving in antisera, celluloseacetate membranes, ...