Structure Formation Mechanism of Phase Separation in Polymer Mixtures

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

Phase separation in star-polymer-colloid mixtures.

We examine the demixing transition in star-polymer-colloid mixtures for star arm numbers f=2,6,16,32 and different star-polymer-colloid size ratios 0.18< or =q< or =0.50. Theoretically, we solve the thermodynamically self-consistent Rogers-Young integral equations for binary mixtures using three effective pair potentials obtained from direct molecular computer simulations. The numerical results...

متن کامل

Depletion-induced phase separation in colloid-polymer mixtures.

Phase separation can be induced in a colloidal dispersion by adding non-adsorbing polymers. Depletion of polymer around the colloidal particles induces an effective attraction, leading to demixing at sufficient polymer concentration. This communication reviews theoretical and experimental work carried out on the polymer-mediated attraction between spherical colloids and the resulting phase sepa...

متن کامل

Phase-Destabilization Mechanism of Polymer-Modified Bitumens in Quiescent Annealing

Bitumen as a binder in coating and insulating materials is modified with polymers to improve its performance in service conditions. Almost all polymers are incompatible with bitumen, and at high temperatures due to relatively very low viscosity of the bitumen phase, are separated from it. These lead to a considerable limitation in the use and handling of polymer-modified bitumens. An understand...

متن کامل

The role of polymer polydispersity in phase separation and gelation in colloid-polymer mixtures.

Mixtures of nonadsorbing polymer and colloidal particles exhibit a range of different morphologies depending on the particle and polymer concentrations and their relative size ratios. These can be very important for technological applications, where gelation can produce a weak solidlike structure that can help reduce phase separation, extending product shelf life. However, industrial products a...

متن کامل

Phase behavior and structure of star-polymer–colloid mixtures

We calculate the phase diagrams of mixtures between hard-sphere colloids and star-polymers of arm numbers f 52,6,32 for different star-polymer–colloid size ratios 0.2<q<0.6 using an effective one-component description for the colloids in the presence of the stars. We map the full two-component system onto an effective one-component system by inverting numerically the Ornstein–Zernike equation f...

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: Journal of the Japan Society of Colour Material

سال: 2007

ISSN: 0010-180X

DOI: 10.4011/shikizai1937.80.343