Since the discovery of microemulsions, they have attained increasing significance both in basic research and in industry. Due to their unique properties, namely, ultralow interfacial tension, large interfacial area, thermodynamic stability and the ability to solubilize otherwise immiscible liquids, uses and applications of microemulsions have been numerous. The objective of this review is to pr...

Article history: Received 11 January 2009 Received in revised form 21 August 2009 Accepted 8 September 2009 Available online 13 October 2009

OBJECTIVES To compare the polymerization contraction stress of resin cements in dual-cure and self-cure modes, and verify its effect on microleakage and gap formation in class I cavities restored with porcelain inlays. METHODS Dual-cure cements (Calibra, Choice and RelyX ARC) were monitored for contraction stress during 30 min in the tensilometer, in the presence or absence of photo-activatio...

In this study, plasma polymerization technique was used to modify the surface of glass fiber under various plasma powers (30, 60 and 90 W) for exposure time of 15 min to improve the compatibility between glass fiber and epoxy matrix. γ -glycidoxypropyltrimethoxysilane (γ-GPS) monomer were used for surface coating of glass fiber. Interfacial properties of composites were investigated by short be...

In this communication, a novel one-pot synthetic strategy for preparing hollow PNIPAM microspheres via an interfacial polymerization approach at the interface of an inverse W/O emulsion has been proposed and demonstrated. The results show that the prepared PNIPAM microspheres have real empty core and polymer shell structure, with a size range of 1-3 mum. The hollow microspheres experienced a re...

Hydrogels, especially double-network hydrogels, are attractive candidates as load-bearing biomaterials, e.g., tissue-engineering supports for articular cartilages and bones. In this study, we describe the modification of a hydrogel by introduction third monomer, N-[3-(dimethylamino)propyl]methacrylamide, to network system, which serves reactive site subsequent interfacial reactions surface-init...

This research is intended to compare degradation processes in light-cured (dimeth)acrylate-type polymer/filler dental composites affected aging dry-air and water-immersed mode. The positron annihilation lifetime (PAL) spectroscopy has been employed study changes atomic-deficient structure these under aging. Under light-curing polymerization initiating crosslinking of monomer chains, fragmentati...

Holdup was measured at various frequencies, amplitudes, continuous and dispersed phase flow rates for binary systems in a pulsed plate column capable of providing samples at various heights. The binary systems was so selected as to cover a wide spectrum of interfacial tensions. Dispersed phase holdup was found to increase with height in a logarithmic fashion at conditions away from the flooding...

The interfacial polymerization dynamics are tracked by successive droplet and capsule deformation using a straightforward microfl uidic approach. ab We use microfluidic polydimethylsiloxane (PDMS) devices to measure the kinetics of reactive encapsulations occurring at the interface of emulsion droplets. The formation of the polymeric shell is inferred from the droplet deformability measured in ...