نتایج جستجو برای: plasticizer molecular weight
تعداد نتایج: 928575 فیلتر نتایج به سال:
The use of plastics and plastic-containing products is a reality of modern life that has transformed both the home and work environments. In addition to the polymerized molecules that form the matrix of the plastic, however, other chemicals (adjuvants) are commonly incorporated into plastic products to impart specific use or performance characteristics such as combustion resistance, color enhan...
Objective: The goal of this present research finding was to formulate mucoadhesive film for a water insoluble drug using different plasticizers and to study the effect of plasticizers in formulating buccal films. Buccal drug delivery is a safer and easier method of drug utilization. Methods: Buccal films were prepared by using Hydroxy Propyl Methyl Cellulose (HPMC) as the polymer and Glycerine,...
The effects of compound plasticizer urea/caprolactam (UC) on the diffusion behavior water in mixtures with poly(vinyl alcohol) (PVA) were studied using a Molecular Dynamics (MD) simulation method. Five models PVA composites different contents constructed to investigate variation intermolecular interaction as well molecules. Results showed that predominant between functional groups UC and consis...
Characterizing the sorption of drugs onto polyvinylchloride (PVC) and polyethylene (PE) materials in terms thermodynamic adsorption properties atomistic details (local arrangements, orientation, diffusion) is fundamental for development alternative that would limit drug phenomena plasticizer release. Here, a combination experiments sophisticated calculations potential mean forces are carried ou...
low molecular weight heparin-modified isoliquiritigenin-loaded solid lipid nanoparticle (lmwh-isl-sln) was developed for injective application. the morphological observation, particle diameter and zeta potential of lmwh-isl-sln were characterized using transmission electron microscopy (tem) and a malvern zetasizer. its entrapment efficiency (ee) and drug loading (dl) were determined by ultracen...
the data on the effect of ethylene concentration on polymerization rate for several modifications of modern highly active titanium–magnesium catalysts ticl4/mgcl2 are presented. these catalysts differ in titanium content and conditions of support preparation, activities, and the shape of kinetic curves. it is found that the observed order of polymerization rate with respect to ethylene in the r...
This work investigates the possibility of obtaining molecular weight distribution (MWD) linear ultrahigh (UHMW) polypropylene (PP) through rheology. To this end, viscoelastic response a set UHMWPP samples is measured over largest possible frequency range. The terminal relaxation achieved by running creep experiments and converting compliance in dynamic moduli. A time–temperature concentration p...
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