نتایج جستجو برای: cellulose film
تعداد نتایج: 120077 فیلتر نتایج به سال:
The thermomechanical and dynamic mechanical properties of films and fibres in vapour laden atmospheres and simulated dye baths were investigated in order to understand their processing behaviour. Acetone and water vapour acted as plasticisers for cellulose acetate film. 2-phenoxyethanol was found to penetrate poly(ethylene terephthalate) film above its glass transition temperature and consequen...
Cellulose was modified by formic acid to prepare formyl cellulose (FC). The amount of groups in FC adjusted controlling the reaction time, temperature, and concentration. Then, used reinforce polylactic (PLA) films prepared solution casting. Scanning electron microscopy (SEM) shows that long rod-like particles were broken into short rods after formylation introduction made PLA surface rougher. ...
The surface energies of film coating formulations based on hydroxypropyl methylcellulose and containing microcrystalline cellulose, lactose and Tween 20, respectively, have been assessed. The approach taken allowed the components of the surface energy, in terms of the Lifshitz-van der Waals and the acid-base contributions, to be determined. Spreading coefficients of these coating formulations w...
The water-insoluble DNA film was successfully prepared by UV irradiation. The DNA film was stable in water. It could effectively accumulated the DNA-binding intercalating materials, such as ethidium bromide, dibenzo-p-dioxin and benzo[a]pyrene, in their aqueous solutions. On the other hand, DNA was immobilized onto nonwoven cellulose fabrics, also by the UV irradiation. The DNA immobilized clot...
The recent interest in nanotechnology has triggered research on nanofibers and nanostructures. Here we present our work on fiber-based multifunctional materials including nanofibers obtained via electrospinning processes. Such nanofibers are of potential value given the highly porous structures they form and their large surface area-to-volume ratio which is often required in high performance ap...
The aim of the present work was to prepare and evaluate sublingual fast dissolving films containing metoprolol tartrate-loaded niosomes. Niosomes were utilized to allow for prolonged release of the drug, whereas the films were used to increase the drug's bioavailability via the sublingual route. Niosomes were prepared using span 60 and cholesterol at different drug to surfactant ratios. The nio...
Abstract: Aim and Objectives: The main motto of this work was to search the additive effect Datura stramonium leaves mucilage in making buccoadhesive film by taking Aceclofenac as a model drug. Materials Methods: Nine formulations buccal films were made using Carbopol 934 P varying proportions Ethyl Cellulose D. mucilage. judged for compatibility studies physical constraints including content d...
Homogeneous and transparent CNF films, fabricated from the (2,2,6,6tetramethylpiperidin-1-yl) oxyl (TEMPO)-modified CNF suspension, were laminated onto wood flakes (WF) based on phenol-formaldehyde (PF) resin and the reinforcement potential of the material has been investigated. The focus was on the influence of CNF film lamination, relative humidity (RH), heat treatment, and anisotropic proper...
Cellulose acetate (CA) was used for the preparation of food packaging film. Glycerol and n-propanol were introduced, as plasticizer transparent agent, respectively evaluating possible changes film functional properties on tensile strength transparency. The transmittance, haze value, flexibility acquired by using optical mechanical analyses, respectively. presence glycerol improved films increas...
A cellulose derivative substance called acetate is frequently used in the manufacturing of photographic film, fiber, membranes, and bioplastics. However, availability sources for acetate's raw material does not support this demand. Paper waste has a high content. Therefore, aim research to synthesize from α-cellulose paper. In order separate alpha paper study, delignification process with NaOH ...
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