statement of problem: the degree of conversion depends on the material composition, light source properties, distance from light source, light intensity, curing time, and other factors such as shade and translucency. objectives: in the present study, we evaluated the effects of different light- curing modes and shades of methacrylate and silorane-based resin composites on the degree of conversi...

Polymersomes are exciting self-assembled structures with great potential in pharmaceutical applications. A systematic investigation of a novel series methacrylate-based polymersomes is reported this study. Five well-defined ABA triblock copolymers being based on tri(ethylene glycol) methyl methacrylate and B 2-(diethylamino)ethyl (DMAEMA) were synthesized using living polymerization method. The...

We evaluated the influence of monomer type, plasticizer content, and powder/liquid (P/L) ratio on setting characteristics light-cured acrylic permanent soft denture liners based poly(ethyl methacrylate/butyl methacrylate). Two monomers, iso-butyl methacrylate (i-BMA) 2-ethylhexyl (2-EHMA), that contained various concentrations acetyl tributyl citrate (ATBC) trace amounts photo initiator reducin...

Although the effects of u.v. radiation on poly(methyl methacrylate) and poly(methyl acrylate) are superficially different, nevertheless there are obvious fundamental similarities and this copolymer system was chosen for study in order to observe the influence of one type of chain unit on the degradation reactions of the other. Rates of chain scission and crosslinking were measured at room tempe...

STUDY DESIGN Axial pullout tests using fresh cadaveric thoracolumbar vertebral bodies. OBJECTIVES To evaluate the effect of a new injectable calcium phosphate cement on the axial pullout strength of both revised and augmented pedicle screws in comparison with polymethyl methacrylate and in terms of injection method. SUMMARY OF BACKGROUND DATA Failure of pedicle screws by loosening and back ...

The design of crosslinking domains is a vital factor to create functional hydrogels with controlled physical, mechanical, and adhesive properties. This paper demonstrates versatile synthetic systems micelle-crosslinked highly stretchable, self-healing, selectively For this, methacrylate-bearing random copolymer micelles are designed as physical covalent crosslink via the self-assembly amphiphil...

The eMcacy of pretreatment on the dentin surface with an aqueous solution of glycery1 methacrylate {GM) was examined by measuring the wall-to-wall polymerization centraction of a light activated composite in a cylindrical dentin cavity, and by measuring the tensile bondi strength to a flat dentin surface. All of the tested dentin surfaces were cleaned with neutralized O.5M EDTA and treated with...

Specialized adaptations for application of Goldner's Masson trichrome stain to plastic embedded undecalcified bone specimens are presented. This stain can be used successfully on methyl-glycol methacrylate, glycol methacrylate and Spurr embedded bones. The stain affords the advantage of good cellular staining due to the hematoxylin component with concomitant sharp discrimination of mature bone ...

Self-healing of the superhydrophobic cotton fabric (SCF) obtained by the radiation-induced graft polymerization of lauryl methacrylate (LMA) and n-hexyl methacrylate (HMA), can be achieved by ironing. Through the steam ironing process, the superhydrophobicity of the SCFs will be regenerated even after the yarns are ruptured during the abrasion test under a load pressure of 44.8 kPa. SCFs made f...

Development und experimental testing of a new kind of dielectric barrier discharge flow reactors applicable for plasma-assisted chemical vapor deposition as well as surface treatment processes at atmospheric pressure are described. Using a combination of two upstream modules, a gradient mixer and a homogenizer, the reactor is fed by a laminar gas flow with an established concentration gradient ...