Effect of methyl methacrylate (MMA) as a binder and heating treatment were investigated to improve green alumina compacts machinability. Properties their corresponding sintered samples prepared with without MMA compared. Investigation properties was performed on compacted at applied pressures up 150 MPa. After pressing, thermally treated 115oC. The intention enhance the polymerization temperatu...

In this study, synthesis of unsaturated Poly(2-Butene Maleate) polyester by condensation polymerization and preparation cross-linked graft copolymer with methyl methacrylate are presented. For purpose, polyesters were synthesized in four different time periods (12h, 24h, 36h, 48h) the presence hydroquinone using 1,4-Butanediol-2-ene maleic anhydride. Then, obtained was purified on alumina colum...

RAFT polymerization was used to synthesize urea-bearing methyl methacrylate copolymers for binding carboxylate isosteres.

methyl methacrylate (mma), a widely used monomer in dentistry and medicine has been reported to cause abnormalities or lesions in several organs. experimental and clinical studies have documented that monomers may cause a wide range of adverse health effects such as irritation to skin, eyes, and mucous membranes, allergic dermatitis, stomatitis, asthma, neuropathy, disturbances of the central n...

Terminally dibrominated poly(β-propiolactone) was prepared through sequentially ring-opening polymerization of β-propiolactone and dibromination the former product. Synthesis poly(β-propiolactone)-b poly(methyl methacrylate) tri-arm block copolymer achieved by atom transfer radical methyl methacrylate onto with bromide end groups. The characterization polymers carried out using 1H-NMR, DSC, TGA...

—ABA type tri-block amphiphilic polyelectrolyte consisting of poly(methyl methacrylate-block-methacrylic acid-block-methyl methacrylate) (P(MMA-b-MAA-b-MMA)) was synthesized by atom transfer radical polymerization technique (ATRP) and the self-assembly behavior of the polymers in aqueous solution was studied over the course of neutralization. Combination of potentiometric and conductometric tit...

in this article several control schemes for a pilot scale polymerization reactor are proposed and one of them is selected as the most suitable design. the performances of proposed schemes have been compared through computer simulations. the controllers are pid and chosen reaction is polymerization of methyl methacrylate which is highly exothermic.