An alternative route to highly concentrated, freely flowing colloidal dispersions

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The rheological behavior of concentrated colloidal dispersions

A simple model for the rheological behavior of concentrated colloidal dispersions is developed. For a suspension of Brownian hard spheres there are two contributions to the macroscopic stress: a hydrodynamic and a Brownian stress. For small departures from equilibrium, the hydrodynamic contribution is purely dissipative and gives the high-frequency dynamic viscosity. The Brownian contribution h...

متن کامل

Jamming and unjamming of concentrated colloidal dispersions in channel flows†

We investigated the pressure driven flow of concentrated colloidal dispersions in a converging channel geometry. Optical microscopy and image analysis were used to track tracer particles mixed into dispersions of sterically stabilized poly(methyl methacrylate) (PMMA) spheres. The dispersions were drawn into a round 0.5 mm capillary at one of two pump speeds (^ applied pressure): v1 1⁄4 0.245 ml...

متن کامل

Hydrodynamic and Colloidal Interactions in Concentrated Charge-Stabilized Polymer Dispersions.

Hydrodynamic and colloidal interactions are explored in concentrated, charge-stabilized colloidal dispersions by measuring the dependence of rheology (e.g., low and high-shear viscosity, high-frequency viscosity, and modulus) and self-diffusivity on salt content, particle size, and concentration. Model, sulfonated polystyrene lactices of varying diameter are prepared and investigated by shear r...

متن کامل

Rheology of Concentrated Dispersions

In t h i s paper we b r i e f l y p resen t t h e main re levan t physical q u a n t i t i e s i n t h e rheology of concentrated d i spers ions . Main l i n e s o f t h r e e t o p i c s ( s h e a r v i scos i ty , sedimentation ve loc i ty and aggregation processes) a r e then given. The importance o r ordered or random s t r u c t u r e s is emphasized. Nature and i n d u s t i a l processes...

متن کامل

Absorption length for photon propagation in highly dense colloidal dispersions

The absorption length for photon propagation in highly concentrated colloidal dispersions calculated from temporal intensity profiles of 100 femto-second pulses is much longer than the absorption length obtained from the measurements of static light transmission in the pure continuous phase fluid. The difference between these two values is explained on the basis of small interparticle spacing a...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Soft Matter

سال: 2011

ISSN: 1744-683X,1744-6848

DOI: 10.1039/c1sm05200d