We investigate the adsorption and diffusion of colloidal particles at an interface containing a one-dimensional potential well. It is observed how the adsorption kinetics onto the wall is altered with time, and one observes the formation of a particle chain. We find that the time it takes for a bead to penetrate into the chain depends strongly on the particle density, and beyond a critical valu...

Poly(methyl methacrylate) (PMMA)/hydroxyapatite (HA) composite has potential application in denture base materials. The denture base materials should exhibit good mechanical properties and dimensional stability in moist environment. Silane coupling agent [3-methacryloxypropyltrimethoxy silane (γ-MPS)] was used to treat the HA fillers in order to enhance the interfacial interaction between the P...

Abstract We present a numerical simulation study of advective–diffusive scalar transport in three-dimensional high-contrast discontinuous permeability fields, generated with truncated pluri-Gaussian geostatistical approach. The experiments are run an Eulerian approach using novel unified framework based on the finite-volume library OpenFOAM ® (Weller et al. Comput Phys 12(6):620–631, 1998), for...

Thymol, an important and advantageous component of many essential oils, has been applied as an antimicrobial agent in animals. To increase the duration of action of this compound in ruminants, it was decided here to prepare a controlled release carrier for thymol. Hydroxy propyl methyl cellulose (HPMC) and ethyl cellulose (EC) were used as the matrix polymer here. Mixtures of thymol with eight ...

We present a comprehensive analysis of experimental results obtained for Fickian diffusion in the benchmark ternary liquid mixture of 1,2,3,4-tetrahydronaphthalene, isobutylbenzene, and dodecane (nC12) with equal mass fractions. Isothermal diffusion coefficients have been measured by two independent experimental methods: by Taylor dispersion technique, and by a counter flow cell fitted with an ...

Moisture diffusion analysis (MDA) has been developed as a new non-destructive evaluation methodology to monitor the strength degradation of graphite-epoxy composite materials. Studies of composite strength degradation due to high moisture identify reversible strength loss due to current moisture content and irreversible strength loss related to prior moisture exposure with microstructure damage...

Abstract With a view toward the application of highly hygroscopic polymers as humidity responsive self-actuator, evaluation real time moisture concentration in material becomes priority. In this paper, diffusion process cellulose acetate (53.3% acetylation) has been studied. Membranes (thickness within range 66–200 µm) have prepared, and absorption at room temperature different relative (RH 21–...

The present study was aimed to develop and evaluate nanoparticulate containing pioglitazone HCl as potential antidiabetic drug delivery system. The pioglitazone HCl -loaded chitosan nanoparticles were prepared by ionic gelation of chitosan with tripolyphosphate anions at various concentrations. The nanoparticles were characterized by zeta potential analyzer; particle size analyzer and Fourier t...

In this contribution, we theoretically investigate the isothermal mass transport of a simple fluid into a blend of two immiscible Newtonian polymers. Using internal state variables, we derive a nonlinear formulation that addresses the effects of the diffusion/interface coupling on both the mass transport as well as on the morphology of the interface. The approach uses a scalar and a second-orde...