نتایج جستجو برای: pseudoplastic

تعداد نتایج: 317  

Journal: :European Polymer Journal 2022

Telechelic associative polymers such as Hydrophobically modified ethoxylated urethanes (HEURs) are an important class of rheology additives used in many industrial fields allowing a precise control the rheology. To avoid use toxic isocyanates, more eco-friendly HEURs were synthesized based on cyclo-carbonate/amine addition reaction. hydroxyurethanes (HEHURs) thus obtained by aminolysis telechel...

Journal: :Applied sciences 2021

The performance of different natural fibers (hemp, kenaf and bamboo) used to formulate composites with an alkali-activated matrix based on metakaolin is evaluated. Short were randomly dispersed up about 3% the binder weight, fresh cured properties derived determined. Up investigated fraction, it still possible obtain adequate workability without supply additional water or additives. Upon modifi...

Journal: :Jurnal farmasi sains dan praktis 2022

Nutmeg seed oil is one of essential which unstable in storage. The stability nutmeg can be improved by being formulated into an emulgel with carbopol 940. This study was to determine the physical and SPF value vitro 940 as a gel base. made 10% concentration variation base, namely 0.60% (FI), 0.80% (FII), 1.0% (FIII). tested for including organoleptic, homogeneity, adhesion, dispersibility, visc...

Journal: :Journal of Polymers and The Environment 2021

Media composition and culture conditions for levan production by Bacillus mojavensis (BM-levan) were optimized using Plackett–Burman Box-Behnken designs. The yield was 0.44 g of per gram sucrose consumed. decomposition revealed an optimal temperature 228 °C, endothermic peak at 216.58 °C a melting enthalpy 49.28 J/g. rheological parameters the aqueous solutions from BM-levan determined accordin...

An experimental study was carried out to obtain the mean convective heat transfer coefficient of aqueous carboximethyl cellulose (CMC) solutions in double-pipe heat <span style="font-size: 10pt; color:...

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