Polycarbonate polydimethylsiloxane

Perfectly Alternating Polycarbonate-Polydimethylsiloxane Block Copolymers. 

FIG. 17. NMR spectrum of a bisphenol A polycarbonate-polydimethylsiloxane block copolymer with average silicone block length Hpoms = 10. (85)... 

The earliest well-characterized block copolymers to achieve commercial acceptance were the bisphenol A polycarbonate-polydimethylsiloxane polymers (4) developed by H. Vaughn at General Electric [25]. The resins exhibited a structure in which there was a Si-O-C transition between inorganic and organic blocks. 

M. Okamoto and T. Kanezaki, Resin composition containing a polycarbonate-polydimethylsiloxan, U.S. Patent 5,502,134 (1996). 

Nodera A, Kanai T. Flame retardancy of polycarbonate-polydimethylsiloxane block copolymer/silica nanocomposites. J Appl Polym Sci 2006 101 3862-3868. 

A blend of two polycarbonate copolymers, high-heat poly(ester-carbonate) (PEC) and polycarbonate-polydimethylsiloxane copolymer (PC-PDMS) provided an opaque, pearlescent blend. However, when a transesterification catalyst was used, the blend becomes miscible and translucent/transparent. The high-heat, ductile (HHD) materials were analyzed for a range of properties including optics, rheology, heat performance, flame retardance, and mechanical properties. The hydrolytic stability of the HHD materials was also measured by comparing the ductility of the blends before and after autoclaving. 

Polydimethylsiloxane based multiblock copolymer systems containing 1,1-dichloro-2,2-bis(4-hydroxyphenyl)ethylene polycarbonate units and phenolphthalein polycarbonate units were synthesized and evaluated231 . Both copolymer systems showed good phase separation, increased rubbery character and improved processa-... 

Fig. 3. ESCA results on the surface segregation of the Polycarbonate homopolymer/Poly-carbonate-Polydimethylsiloxane segmented copolymer blends 1S0)...

Silicone Polydimethylsiloxane Works by producing a char surface Polyolefins, polyolefin blends, EVA, polycarbonate, polyurethane Dow Corning, GE Silicones... 

The novel water-soluble dye 64 shows sufficient stability for potential application in molecular-based beacons for cancer detection using optical imaging <2005BCC735>. An optochemical ozone sensor with a quantitation limit of 0.03 ppm and accuracy exceeding 8% has been obtained by immobilization of the novel soluble indigo derivative 65 in permeable transparent polymeric films of polydimethylsiloxane-polycarbonate <2005MI1628>. 

Investigation of a wide range of block copolymers, consisting of various flexible (polydimethylsiloxane, polybutadiene) and rigid (polycarbonate, polysulphone, polyarylate) phases [44], shows that irrespective of the chemical nature of copolymer, content and molecular weight of blocks as well as pressure and composition of the hydrocarbon mixture, sorption, and mass transfer of alkanes take place primarily in the rubbery phase. The phenomenon of plasticization of polymers by hydrocarbons was demonstrated by baromechanical methods [7,45 8]. Figure 9.13 shows baromechanical curves for the block copolymer... 

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