The mechanism of stereospecific polymerization in a methyl methacrylate–Grignard reagent (CHMgBr) system is studied as a function of polymerization temperature with high-resolution nuclear magnetic resonance (NMR) spectroscopy for obtained polymers. It is found that the maximum temperature during the ...
Nishioka, AtsuoPolymer JournalY. Inoue, R. Chujo, A. Nishioka, Polymer J. 2 , (1) 13 (1971).Ando I, Chujo R, Nishioka A. Polymerization mechanism in methyl methacrylate-grignard reagent system. I. Phenyl- magnesium bromide. Polym J 1970;1:609....
THE EFFECTS OF HINDERED AMINES ON METHYL METHACRYLATE POLYMERIZATION受阻胺对甲基丙烯酸甲酯聚合的影响MTMP甲基哌啶自由基聚合醇酯甲基丙烯酸共聚合AIBN溶剂对引发剂聚合速度本文研完了不同引发体系对带受阻胺基团的单体4-甲基丙烯酸2,2,6,6-四甲基哌啶醇酯(TMPM)自由基聚合的影响。分析比较了偶氮型引发剂和过氧化...
a本文采用乳液聚合的方法,以甲基丙烯酸(MAA)、甲基丙烯酸甲酯(MMA)及第三单体-丙烯酸丁酯(BA)为原料,合成内增塑肠溶型薄膜包衣丙烯酸树脂 This article uses the emulsion polymerization the method, take methylacrylic acid (MAA), methyl methacrylate (MMA) and third monomer - acrylic acid Ding ester (BA) ...
Poly(methyl methacrylate) prepared by an anionic mechanism is more thermally stable than that made by a free radical process.214The thermal degradation of PMMA obtained by a free radical mechanism occurs in two distinct stages. Approximately 50% of the sample degrades between 170 and 250°C; th...
The mechanism of action in polymer production involves the initiation of polymerization through the use of initiators or catalysts, leading to the formation of long chains of methyl methacrylate molecules. Adhesive Manufacturing: This compound is also used in the manufacturing of adhesives. Its ...
Polymerization of methyl methacrylate (MMA) with aliphatic primary amines and carbon tetrachloride has been investigated in th dimethylsulfoxide medium by employing a dilatometric technique at 60掳C. The rate of polymerization (Rp) has been evaluated under the conditions, [CCl4]/[amine] 1. The ...
Among the various BCP systems reported in the literature, poly(styrene)-block-poly(methyl methacrylate) (denoted as PS-b-PMMA) is well studied, and presents interesting properties from a technological point of view. Firstly, styrene and methyl methacrylate monomers can be readily copolymerized witho...
Teodorescu M, Draghici C (2006) Poly(methyl methacrylate)-block-polysulfide-block-poly(methyl methacrylate) copolymers obtained by free-radical polymerization combined with oxidative cou- pling. Polym Bull 56:359Poly(methyl methacrylate)- block -polysulfide- block -poly(methyl methacrylate) copolymers...
distribution are studied by GPC.Coordinate mechanism was proposed for the MMA polymerization by Nd Al α,α' Dipyridyl.Kinetic studies showed that the MMA polymerization rate is first order with respect to monomer concentration.The apparent activation energy of MMA polymerization reaction is 22.2 kJ/...