In this research, gelatin nanoparticles were synthesized via inverse miniemulsion method by employing a mixture of a water soluble carbodiimide (CDI) and N-hydroxysuccinimide (NHS) as a non-toxic cross-linking system. The gelatin nanoparticles were characterized for their size and size distribution, morphology and stability and were compared with those of nanoparticles cross-linked by glutarald...

Abstract We report on a new process for the spinning of high-performance cellulosic fibers. For first time, cellulose has been dissolved in ionic liquid (IL) 1-ethyl-3-methylimidazolium octanoate ([C2C1im][Oc]) via thin film evaporator continuous process. Compared to other ILs, [C2C1im][Oc] shows no signs hydrolysis with water. dope preparation degree polymerization pulp was adjusted by electro...

Rheological measurements of polyethylene solutions in a novel nontoxic solvent were used to determine the Mark-Houwink parameters for PE widely different molecular weights assess viscosity average molar mass several millions g.mol−1. Solutions high density that had been previously characterized by size exclusion chromatography prepared harmless naphthenic oil. The intrinsic viscosities obtained...

Abstract The viscosities of poly(3-hydroxybutyrate) (PHB) with mixed tacticities were determined as functions temperature and shearing rate via plate–plate viscosimetry, fitted by a combined Herschel–Bulkley–Cross–Doolittle model while applying Carvalho et al.’s single-point correction. They compared to values slit obtained during processing at 428 K. In both cases, measured parameters function...

Staphylococcal enterotoxin types A and C, were observed by viscosimetry and near-ultraviolet difference spectroscopy to unfold at concentrations of aqueous guanidine hydrochloride greater than 1 M. Apparent rate constants of unfolding calculated from spectral curves differed markedly for the two enterotoxins. Rate constants for the unfolding of enterotoxin A in 2 or 3 M guanidine hydrochloride ...

Glucose oxidase (GOX; beta-d-glucose:oxygen oxidoreductase) from Aspergillus niger is a dimeric flavoprotein with a molecular mass of 80 kDa/monomer. Thermal denaturation of glucose oxidase has been studied by absorbance, circular dichroism spectroscopy, viscosimetry, and differential scanning calorimetry. Thermal transition of this homodimeric enzyme is irreversible and, surprisingly, independ...

Photo-degradation of Rhodamine B (RhB) in aqueous solution was use as a probe to assess the photocatalytic activity Gadolinium oxide (Gd2 O3 ) nanoparticles suspension under UV irradiation. The were prepared by polyol method using gadolinium chloride hexahydrate Cl6 .6H2 O) and diethylene glycol (DEG) starting precursors. physico-chemical properties elaborated are analyzed X-ray diffraction (XR...

The complex formation between allylamine and mineral acids (HCl, H 2 SO 4, 3 PO 4 ) their stabilities were investigated by Uv-Vis, DSC TGA analyses. Free radical polymerization of salts was achieved using 2,2?-azobis (2-methylpropanediamine)dihydrochloride at 50 o C under N atmosphere in water. PAlAm synthesized the presence insoluble water due to physical crosslinking chains. They converted so...

in this research, gelatin nanoparticles were synthesized via inverse miniemulsion method by employing a mixture of a water soluble carbodiimide (cdi) and n-hydroxysuccinimide (nhs) as a non-toxic cross-linking system. the gelatin nanoparticles were characterized for their size and size distribution, morphology and stability and were compared with those of nanoparticles cross-linked by glutarald...