Results 301 to 310 of about 108,918 (350)
Some of the next articles are maybe not open access.
The transport of methyl methacrylate monomer in poly(methyl methacrylate)
Journal of Applied Polymer Science, 1975The absorption kinetics and equlibria of methyl methacrylate monomer into poly(methyl methacrylate) were studied over a range of penetrant activities. The interval sorption kinetics at elevated activities were determined, compared, and contrasted with the integral sorption experiments in previously unpenetrated film samples.
H. B. Hopfenberg +2 more
openaire +1 more source
Poly(methyl methacrylate-co-acrylonitrile)
Polymer, 1973Abstract Stable macroradicals of methyl methacrylate were prepared by the azobisisobutyronitrile-initiated polymerization of methyl methacrylate in hexane whose solubility parameter value (δ) differed from that of the macroradical by more than 1.8 hildebrand units and in 1-propanol at temperatures below its theta temperature (84.5°C).
Raymond B Seymour +2 more
openaire +1 more source
Journal of Polymer Science Part B: Polymer Physics, 1998
Compatibilization of blends of polybutadiene and poly(methyl methacrylate) with butadiene-methyl methacrylate diblock copolymers has been investigated by transmission electron microscopy. When the diblock copolymers are added to the blends, the size of PB particles decreases and their size distribution gets narrower.
Hanying Zhao, Baotong Huang
openaire +1 more source
Compatibilization of blends of polybutadiene and poly(methyl methacrylate) with butadiene-methyl methacrylate diblock copolymers has been investigated by transmission electron microscopy. When the diblock copolymers are added to the blends, the size of PB particles decreases and their size distribution gets narrower.
Hanying Zhao, Baotong Huang
openaire +1 more source
Methyl methacrylate in poly(methyl methacrylate)—validation of direct injection gas chromatography
Journal of Chromatography A, 2004Gas chromatography (GC) was investigated for the determination of residual methyl methacrylate (MMA) in heat-processed poly(methyl methacrylate) (PMMA) denture base material emphasizing recovery and validation. Standard solutions of MMA and emulsion-polymerized PMMA in dichloromethane were analysed, before and after distillation by a room-temperature ...
Christie Y K, Lung, Brian W, Darvell
openaire +2 more sources
Nanoindentation of Poly (Methyl Methacrylate)
MRS Proceedings, 2000ABSTRACTFor the indentation of an elastic-plastic homogeneous half-space with a pyramidal indenter, the load theoretically increases with the square of the total penetration depth. Experimental data are presented in the current paper that demonstrate the validity of this relationship for an organic polymer and a Berkovich indenter, provided that ...
Michael J. Adams +2 more
openaire +1 more source
Poly(vinylidene fluoride) - poly(methyl methacrylate) blends
Polymer, 1977Abstract A dynamic mechanical study of four blends of PVdF and PMMA plus the constituent homopolymers indicates that these two polymers are partly compatible, but that a crystalline PVdF phase also exists. The pure PVdF sample showed four transitions at −95°, −25° 75° and 100°C which are ascribed to a restricted chain motion of the Schatzki type, to ...
D.J. Hourston, I.D. Hughes
openaire +1 more source
Polymer, 2000
A series of well-defined poly(methylmethacrylate) (PMMA)- b-poly(isooctylacrylate) (PIOA)-b-PMMA triblock copolymers (MIM) has been synthesized by transalcoholysis of PMMA-b-poly(tert-butylacrylate) (PtBA)-b-PMMA precursors (MTM) by isooctyl alcohol. Phase separation is observed for all the investigated triblock copolymers, thus containing PMMA outer ...
J.D. Tong +5 more
openaire +1 more source
A series of well-defined poly(methylmethacrylate) (PMMA)- b-poly(isooctylacrylate) (PIOA)-b-PMMA triblock copolymers (MIM) has been synthesized by transalcoholysis of PMMA-b-poly(tert-butylacrylate) (PtBA)-b-PMMA precursors (MTM) by isooctyl alcohol. Phase separation is observed for all the investigated triblock copolymers, thus containing PMMA outer ...
J.D. Tong +5 more
openaire +1 more source
Silicone stabilized poly(methyl methacrylate) nonaqueous latex
Journal of Colloid and Interface Science, 1990Abstract Nonaqueous poly(methyl methacrylate) latexes were prepared by the nonaqueous dispersion polymerization of methyl methacrylate in heptane with trimethylsilyl-terminated polydimethylsiloxane or vinyldimethylsilyl-terminated polydimethylsiloxane stabilizer precursors.
Robert H Pelton +2 more
openaire +1 more source
Polymer Engineering & Science, 2004
Abstract A poly(methyl methacrylate)‐intercalated graphite oxide/poly(methyl methacrylate) nanocomposite was prepared by emulsion polymerization of methyl methacrylate in the presence of graphite oxide (GO). GO was synthesized by the oxidization of natural graphite powder with KMnO 4
Wang Wen‐Ping, Pan Cai‐Yuan
openaire +1 more source
Abstract A poly(methyl methacrylate)‐intercalated graphite oxide/poly(methyl methacrylate) nanocomposite was prepared by emulsion polymerization of methyl methacrylate in the presence of graphite oxide (GO). GO was synthesized by the oxidization of natural graphite powder with KMnO 4
Wang Wen‐Ping, Pan Cai‐Yuan
openaire +1 more source
Photodegradation of poly(methyl methacrylate)
Journal of Polymer Science Part A-1: Polymer Chemistry, 1966AbstractThe vacuum photodegradation at 30°C. of poly(methyl methacrylate) and copolymers with acrylaldehyde, methacrylaldehyde, and methyl acrylate has been studied. The polymers were examined in the form of expanded films as produced by a freeze‐drying technique. At least one molecule of carbon monoxide is evolved for each chain scission.
openaire +1 more source