نتایج جستجو برای: cellulose acetate phthalate

تعداد نتایج: 81571  

2002
A. Jorge Guiomar Stephen D. Evans James Guthrie

Phase inversion cellulose acetate propionate membranes showed low permeability to hydrogen peroxide aqueous solutions. Their permeability was increased by alkaline hydrolysis of the ester linking units. However, the permeability remained lower than that of an unsubstituted cellulose membrane. The inclusion of hydroxypropyl cellulose in the membrane formulation, followed by an alkaline hydrolysi...

Journal: :Separations 2022

The material composition of a group Rodovetri, hand-painted animation cels, made in the 1950s and 1960s for Italian television, has been determined by Flash Py-GC-MS, Thermally assisted Hydrolysis Methylation-(Py-)GC-MS GC-MS investigations, where, pyrolysis applications, pyrolyzer is connected septum-less to GC inlet. condition selected cels was generally poor (yellowing, exudation, warping, c...

2015
Shrikant Patil

Cellulose being an excellent biopolymer has cemented its place firmly in many industries as a coating material, textile, composites, and biomaterial applications. In the present study, we have investigated the effect of biofield treatment on physicochemical properties of cellulose and cellulose acetate. The cellulose and cellulose acetate were exposed to biofield and further the chemical and th...

Journal: :Acta pharmaceutica 2013
Barnabas Wilson Patel Pritesh Babubhai Moothandassery Sankarakutty Sajeev Josephine Leno Jenita S R Brahmani Priyadarshini

In this study, an attempt was made to deliver pantoprazole in a sustained manner using delayed release tablets. The tablets were prepared by the wet granulation method using HPMC, cassava starch and polyvinyl pyrrolidine as polymers, Avicel PH 102 (MCC) as filler and potato starch as binder. The prepared tablets were evaluated for hardness, mass variation, friability and drug content uniformity...

Objective(s): The purpose of this study was to compare novel sandwich-structured nanofibrous membranes, and coaxial and usual methods, to provide sustained-release delivery of morphine for drug delivery. In this work, synthesis ofnanofibrous cellulose acetate (NFC) was carried out by electrospinning. Methods: A weighed amount of cellulose acetate (CA) pow...

2013
Hitesh Chavda Ishan Modhia Anant Mehta Rupal Patel Chhagan Patel

Bioadhesive superporous hydrogel composite (SPHC) particles were developed for an intestinal delivery of metoprolol succinate and characterized for density, porosity, swelling, morphology, and bioadhesion studies. Chitosan and HPMC were used as bioadhesive and release retardant polymers, respectively. A 3(2) full factorial design was applied to optimize the concentration of chitosan and HPMC. T...

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