نتایج جستجو برای: rheological modelsrheology

تعداد نتایج: 11860  

2014
Rocío Gallego Mercedes González Jesús F. Arteaga José M. Franco

This work deals with the influence of functionalization degree on the thermogravimetric and rheological behaviour of NCO-functionalized chitosanand chitin-based oleogels. Chitosan and chitin were functionalized using different proportions of 1,6-hexamethylene diisocyanate (HMDI) and subsequently dispersed in castor oil to promote the chemical reaction between the –NCO group of the modified biop...

2009
Peggy Vauchel Raymond Kaas Abdellah Arhaliass Régis Baron Jack Legrand

Alginates are natural polysaccharides that are extracted from brown seaweeds and widely used for their rheological properties. The main step in the extraction protocol used in the alginate industry is that of alkaline extraction. A batch process is used for this step, which is time-, water-, and reactantconsuming. The possibility of extracting by reactive extrusion was investigated. The reactiv...

2016
Xin Wang Ling Xu Jian Ouyang Liqing Zhang Baoguo Han

Nano-TiO2 (NT) and nano-SiO2 (NS) were separately added in the cement paste to investigate the rheological property of fresh mixtures and mechanical strength in hardened state. The effects of different dosages and types of nano-particles on the properties of cement paste were studied. The results indicated that the rheological behavior of the fresh cement paste coincides with the Modified Bingh...

Journal: :Journal of oleo science 2010
Suraj Chandra Sharma Kenichi Sakai Hideki Sakai Masahiko Abe

We have studied the rheological properties of mixtures of polyoxyethylene (10 mol) phytosterol (PhyEO(10)) and polyoxyethylene (10 mol) cholesterol (ChEO(10)) mixed in different ratios along with tetraethylene glycol monododecyl ether (C(12)EO(4)) surfactants in water. Addition of C(12)EO(4) to the aqueous solution of a mixture of (PhyEO(10) + ChEO(10)) results in one-dimensional micellar growt...

2013
Pernille Barbré Pedersen Peter Vilmann Daniel Bar-Shalom Anette Müllertz Stefania G. Baldursdottir

The purpose of this study was to select a polymer for a simulated gastric media (simHGF) to obtain rheological properties similar to that of aspirated human gastric fluid (aspHGF). Rheological characterization showed that addition of 0.2% (w/v) MC 20.000 mPa·s to simHGF provided a simulated media with rheological properties similar to that of aspHGF. INTRODUCTION Many efforts have been made tow...

2016
Sung-Jin Yoon Youngseung Lee Byoungseung Yoo

To understand the effects of adding different gums (guar, xanthan, and locust bean gums) on naked barley flour (NBF), the rheological and pasting properties of NBF-gum mixtures were measured at different gum concentrations (0, 0.3, and 0.6% w/w). Steady shear rheological properties were determined by rheological parameters for power law and Casson models. All samples showed a clear trend of she...

Journal: :Journal of food science 2007
D B Genovese J E Lozano M A Rao

Rheological data on a food together with data on its composition and structure or microstructure should lead to understanding the interrelationships between them. A number of foods are dispersions of solids in liquids, liquids in liquids, or gas in liquids. The dispersed particles may be colloidal in nature with dimensions < 10 mum, or larger noncolloidal particles (> 10 mum). For both colloida...

2011
Xianquan Duan Jigang Xu Beihai He Junrong Li Yushan Sun

Cellulose/chitosan homogeneous solutions were prepared in 1-ethyl-3methylimidazolium acetate ([EMIM]Ac) ionic liquid. Steady and oscillatory dynamic rheological properties were studied with a Haake Mars-ΙΙΙ rotational rheometer. Rheological results show that cellulose/chitosan [EMIM]Ac solutions are a pseudoplastic liquid, and the viscosity of the solution decreases with increasing of chitosan ...

2006
E. S. Boek V. J. Anderson J. R. A. Pearson

This article reviews what has been published on the rheology of worm-like micellar fluids (WLMFs). It is written primarily for those interested in continuum (non-Newtonian fluid) mechanics: it covers the bulk rheological behaviour of typical WLMFs and rheological equations of state (REoS) that reflect this bulk behaviour; it also covers molecular dynamics and Brownian dynamics models that aim t...

ژورنال: مواد پرانرژی 2014
ذکری, نگار, شیخی نارانی, مجید, صابری مقدم, علی, عادلی نسب, مهدی,

A useful technique which is used recently for improving the properties of liquid oxidizer is gellatioin. In the present research it is attempted to study the rheological properties of different IRFNA gels build with different amount of fumed silica as gallant. Rheological measurement indicate that the gels have desirable properties needed for a gel propulsion system like shear-thinning, hystere...

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