AIM The purpose of this study was to evaluate and compare the flexural strength of commercially available acrylic (trevalone) and modified polymethylmethacrylate (PMMA). MATERIALS AND METHODS Four groups were tested; Group 1- control group regular MMA, group 2-2% methacrylic acid, 88% MMA, group 3-16% methacrylic acid, 84% MMA group 4- 20% methacrylic acid, 80% MMA 15 resin specimens of each ...

in this paper, grafting of acrylic acid monomer on gum tragacanth was performed. variable of experiment included concentration of initiators and monomer, time, and temperature. grafting efficiency was measured in the term of percentage of grafting (%g) and percentage of grafting efficiency (%e). effectiveness of grafted gum in ferrous ion removal at different condition was assessed. according t...

Acrylic acid is a monomer that has been responsible for number of severe explosions worldwide as result thermal runaway. The present work was intended to lead an improved understanding the kinetics polymerization and Michael addition reaction (MAR) acrylic acid. Sealed cell differential scanning calorimetry carried out, were assessed on basis model-free Friedman method. In addition, microcalori...

Novel organic-inorganic hybrid materials were developed as LED sealants. Polysilsesquioxane with an -SH group (PSQ-SH) and acrylic monomer selected the inorganic organic components, respectively. Trimethylolpropane trimethacrylate (TRIM), which is a trifunctional monomer, was curing of material performed by thiol-ene reaction. The sealed using prepared PSQ-SH/TRIM (PTH), light emission test per...

A series of pressure-sensitive adhesives (PSAs) with different monomer composition was prepared using emulsion polymerisation. The monomers were butylacrylate (BA), 2-hydroxyethyl acrylate (2-HEA), acrylic acid (AA) and 2-ethylhexyl acrylate (2-EHA). The adhesive performance was studied at 4%, 8% and 12% 2-EHA content based on total monomer (BOTM) composition. The adhesives obtained with consta...

Molecularly imprinted polymer (MIP) microspheres for Piperine were synthesized by precipitation polymerization with a noncovalent approach. In this research Piperine was used as a template, acrylic acid as a functional monomer, ethylene glycol dimethacrylate as a cross-linker, and 2,2'-azobisisobutyronitrile (AIBN) as an initiator and acetonitrile as a solvent. The imprinted and nonimprinted po...

The core-shell acrylic emulsion was synthesized by a semicontinuous seeded polymerization with acrylate monomers as the main materials and octafluoropentyl methacrylate (OFPMA) modified monomers. influences of OFPMA on hydrophobicity, thermal stability mechanical properties latex film were investigated. Fourier transform infrared spectroscopy (FTIR) analysis X-ray photoelectron (XPS) indicated ...