Abstract In the present study, mutual diffusivity D 11 in binary mixtures of water with technical polydisperse poly(ethylene) glycol (PEG) blends molar masses (1000, 4000, or 6000) g⋅mol −1 as well a purified monodisperse PEG homolog polymerization number 21 and mass 943 was investigated by heterodyne dynamic light scattering (DLS) function temperature and/or concentration. The measured for 100...

A synthetic oxygen (O(2)) and carbon monoxide (CO) receptor (hemoCD) composed of 5,10,15,20-tetrakis(4-sulfonatophenyl)porphinatoiron(ii) and a per-O-methylated β-cyclodextrin dimer with a pyridine linker (Py3CD) was functionalised with poly(ethylene glycol) (PEG) to elongate the circulation time of the receptor in the bloodstream. α-PEG monocarboxylic acid (HOOC(CH(2))(3)(CO)O-PEG(mw)-OCH(3); ...

Open-graded friction course (OGFC) is prone to deformation-related clogging during summer owing high internal temperature. Reducing OGFC temperature has significant benefits in relation mitigation of rutting and problems. A phase change composite material with PEG-4000 serving as the core SiO2 shell (PEG/SiO2) was used modify OGFC. Different mechanical performance tests were conducted, results ...

C-phycocyanin from Spirulina platensis was purified in aqueous two-phase systems (ATPS) of polyethylene glycol (PEG)/potassium phosphate, varying the molar mass of the PEG. Results using a full factorial design showed that an increase in the concentration of salt and decrease in the concentration of PEG caused an increment in the purification factor for all the ATPS studied. Optimization of the...

Vinpocetine is a poorly water soluble drug, commonly used in treatment of various cerebral insufficiency conditions. The aim of this work was to formulate vinpocetine in the form of orally disintegrating tablets (ODTs) and enhance its solubility and dissolution rate. This objective was addressed using lyophilization technique of either solid dispersion using polyethylene glycol 4000 (PEG 4000) ...

Extraction of laccase produced by L. polychrous in an aqueous two-phase system, composed of polyethylene glycol and phosphate salt at pH 7.0 and 25C was investigated. The effect of PEG molecular weight, PEG concentration and phosphate concentration was determined. Laccase preferentially partitioned to the top phase. Good extraction of laccase to the top phase was observed with PEG 4000. The opt...

EVALUATION OF PEG 4000 SOLUTION STABILITY IN DIFFERENT TEMPERATURES AND ENVIRONMENTAL CONDITIONS OVER THE TWELVE MONTHS

The present work investigates the feasibility of the design of an enteric coated microporous osmotic pump tablet (ECMOPT) to prolong the drug release of an antipsychotic drug, quetiapine fumarate (QTF). The ECMOPT consisted of an osmotic core coated with a microporous membrane (MPM) made up of cellulose acetate and PEG 4000 as in situ micropore former. The effect of formulation variables such a...

Solid Dispersions were prepared by solvent evaporation technique using microcrystalline cellulose, PEG 4000, PEG 6000, PVP-K30 and Gelucire 50/13. Further objective of the project was to develop fast release surface solid dispersion of glibenclamide and compressed at low pressure to form fast-melting pharmaceutical tablet. In this study, we used sodium starch glycolate for mouth dissolving natu...

Abstract: All production activities will eventually produce waste, especially liquid waste. The nitrate ion (NO3-) is one of the substances in waste that can have a significant impact on water systems and human health. Several methods be used to treat contained water, such as adsorption, phytoremediation, wetland treatment. One its was adsorption. silica modified with polymer due huge carbon ch...