Polycarbonate /PMMA

Direct insertion probe pyrolysis mass spectrometry (DPMS) utilises a device for introducing a single sample of a solid or liquid, usually contained in a quartz or other non-reactive sample holder, into a mass spectrometer ion source. A direct insertion probe consists of a shaft having a sample holder at one end [70] the probe is inserted through a vacuum lock to place the sample holder near to the ion source of the mass spectrometer. The sample is vaporized by heat from the ion source or by heat from a separate heater that surrounds the sample holder. Sample molecules are evaporated into the ion source where they are then ionized as gas-phase molecules. In a recent study, Uyar et al. [74] used such a device for studying the thermal stability of coalesced polymers of polycarbonate, PMMA and polylvinyl acetate) (PVAc) [75] and their binary and ternary blends [74] obtained from their preparation as inclusion compounds in cyclodextrins. 

PS (polystyrene), PVC [poly(vinyl chloride)], PC (bisphenol A polycarbonate) PMMA [poly (methyl methacrylate)], PB (polybutadiene), SAN (styrene-acrylonitrile copolymer),NBR (acrylonitrile-butadiene rubber), PPE (polyphenylene ether), SBR (styrene-butadiene rubber)... 

FIGURE 5.3 Accelerated and real-time weathering of polymer materials obtained at NREL. PET, polyethyleneteraphthalate PVDF, polyvinylidenedifluoride PE, polyethylene PC, polycarbonate PMMA, polymethylmethacrylate. 

ABS = acrylonitrile-butadiene-styerene PC = polycarbonate PMMA = polymethylmethacrylate PS = polystyrene PU = polyurethane PVC = polyvinyl chloride. A more rapid oven program was also used to produce pyrograms via FID detection. 

In addition, the surface should be free of contaminating particles and occlusions that would interfere with the information retrieval process. A typical ablative-mode optical disk has the structure shown in Figme 16.14. The substrate is an optically transparent material such as polycarbonate, PMMA, polyfethylene terephthalate), or polyfvinyl chloride) topped by a subbing layer to provide an optically smooth surface for the recording layer. A metal reflector (typically aluminum) is then incorporated next to a transparent dielectric medium such as poly(a-methyl styrene) and, finally, the absorbing layer where the information pits are created is added. The latter can be a metal-polymer composite (silver particles in a gel) or a dye molecule dispersed in a polymer matrix such as squaryllium dyes, which act as infrared absorbers for GaAs lasers, typically... 

PDMS, poly dimethylsilozane) PET, poly(ethylene terephthalate) PC, polycarbonate PMMA, poly(methyl methacrylate) PVC, poly(vinyl chloride) LTCC, low-temperature cofirable ceramics MES, 2-morpholinoethanesulfonic acid SDS, sodium dodecyl... 

Metamarble Polycarbonate/PMMA alloy Teijin Chem. Ltd. 

PROPERTY GLASS POLYCARBONATE PMMA EPOXY OLEFIN... 

Uyar et al. recently demonstrated with the support of DPMS that both the phase structures and the properties of polymer blends can be modified by processing with cyclodextrines (CDs). In fact, thermal stabilities and thermal degradation mechanisms of mixed blends of polycarbonate/PMMA (PC/PMMA), PC/PVAc and PMMA/... 

Bond of transparent substrates, polycarbonate, PMMA and glass Transparent, fight handling 1 h, excellent chemical, water, and impact resistance, ideal for use where transparent or invisible joints are required, UV resistant, room temperature curing, flexible... 

---