The electron beam irradiation of collagen in the dry and gel states: The effect of the dose and water content from the primary to the quaternary levels.

The aim of our study was to describe the impact of collagen in the gel and dry state to various doses of electron beam radiation (1, 10 and 25 kGy) which are using for food processing and sterilization. The changes in the chemical compositions (water, amino acids, lipids, glycosaminoglycans) were analyzed and the changes in the structure (triple-helix or β-sheet, the integrity of the collagen) were assessed. Subsequently, the impact of the applied doses on the mechanical properties, stability in the enzymatic environment, swelling and morphology were determined.

Influence of Disinfection Methods on Cinematographic Film.

Microbiological contamination of cinematographic films can cause damage and loss of image information. A large part of the films is made with the base of cellulose triacetate, which has been used from the 1940s until today. Cellulose triacetate is relatively resistant to common organic solvents, but some types of microorganisms can contribute to its faster degradation.

Evaluation of Permulgin 3274 as a Material for the Conservation of Beeswax Seals.

When treating historical beeswax seals, it seems a natural choice to use materials as similar to the original as possible. The properties of analogous recent materials, however, differ from those of the aged ones, not to mention the fact that the exact composition of the particular sealing wax is usually uncertain. In order to obtain the material of desired properties, recent beeswax is often combined with various additives, including petroleum waxes, or even replaced by mixtures based solely on these products.

CO/CH and H/CH Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes.

This study explored the underlying synergy between titanium dioxide nanotube (TNT) and carbon nanotube (CNT) hybrid fillers in cellulose triacetate (CTA)-based mixed matrix membranes (MMMs) for natural gas purification. The CNT@TNT hybrid nanofillers were blended with CTA polymer and cast as a thin film by a facile casting technique, after which they were used for single gas separation. The hybrid filler-based membrane depicted a higher CO uptake affinity than the single filler (CNT/TNT)-based membrane.

CeO-Blended Cellulose Triacetate Mixed-Matrix Membranes for Selective CO Separation.

Due to the high affinity of ceria (CeO) towards carbon dioxide (CO) and the high thermal and mechanical properties of cellulose triacetate (CTA) polymer, mixed-matrix CTA-CeO membranes were fabricated. A facile solution-casting method was used for the fabrication process. CeO nanoparticles at concentrations of 0.