Swelling and shrinking kinetics of a lamellar gel phase

نویسندگان

  • David J. Fairhurst
  • Mark E. Baker
  • Neil Shaw
  • Stefan U. Egelhaaf
چکیده

David J. Fairhurst, Mark E. Baker, Neil Shaw, and Stefan U. Egelhaaf Department of Physics, Nottingham Trent University, Nottingham, NG11 8NS, United Kingdom Unilever Research, Port Sunlight Laboratory, Bebington, Wirral L63 3JW, United Kingdom Condensed Matter Physics Laboratory, Heinrich-Heine-University, 40225 Düsseldorf, Germany SUPA, School of Physics, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

In-Situ Interferometry Studies of the Drying and Swelling Kinetics of an Ultrathin Poly(N-isopropylacrylamide) Gel Film below and above Its Volume Phase Transition Temperature

The temperature influence on the drying and swelling kinetics of ultrathin poly(Nisopropylacrylamide) gel film were studied by in-situ interferometry. The drying rate is greatly dependent on temperature. When T j 31 °C, the original gel film was swollen and contained more than 99% of water before drying. Our results showed that the initial drying rate was a constant. However, it became faster a...

متن کامل

The kinetics and mechanism of the formation of crystalline phase of dipalmitoylphosphatidylethanolamine dispersed in aqueous dimethyl sulfoxide solutions.

The phase transition kinetics and mechanism of formation of a lamellar-crystalline phase of dipalmitoylphosphatidylethanolamine (DPPE) dispersed in different concentrations of aqueous dimethyl sulfoxide (DMSO) during cooling have been examined by differential scanning calorimetry and synchrotron X-ray diffraction techniques. In dispersions containing mole fractions of DMSO (x<0.22), the phase t...

متن کامل

Structural Parameters of Lamellar Phases Formed by the Self-Assembly of Dialkyldimethylammonium Bromides in Aqueous Solution

Phase behavior of didodecyl and dioctadecydimethylammonium bromide (DDAB and DODAB) in water was studied using X-ray techniques, differential scanning calorimetry and deuterium nuclear magnetic resonance measurements. Both surfactants self-assemble into lamellar liquid crystalline, either Lα (fluid) and Lβ (gel), phases. The gel-to-fluid phase transition temperature (Tm) in DDAB lamellae was fo...

متن کامل

Pii: S0032-3861(00)00031-8

A model was developed to describe the overall dissolution kinetics of semicrystalline PVA gels prepared by freezing and thawing techniques. The dissolution process was described as a three-step mechanism: detachment-, diffusion-, and disentanglement-controlled dissolution. The unfolding of crystalline regions due to detachment and diffusion was calculated. The lamellar thickness of a PVA crysta...

متن کامل

Modeling mechanochromatic lamellar gels.

Consisting of alternating swelling and nonswelling polymeric layers (SLs and NLs), lamellar gels are one-dimensional photonic crystals with mechanically tunable optical properties. The lamellar structure induces a constraint between the SLs and the NLs, resulting in a highly anisotropic swelling behavior that is coupled with deformation. The coupling gives rise to the mechanochromatic effect, i...

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

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008