Carbon poly

Compression-molded devices of poly(N-palmitoyl hydroxyproline ester) (side chain length 16 carbons), poly(N-decanoylhydroxy-proline ester) (side chain length 10 carbons), and poly(JN-hexanoyl-hydrox roline ester) (side chain length 6 carbons) were prepared with dye contents of 1,5,10, and 20% of either -nitroaniline or acid orange. Release curves were obtained by placing the loaded devices into phospate buffer (pH 7.4) at 37 C. The amount of released dye was followed spectrophotometrically in the usual fashion. 

Poly(2,4-hexadiyne-l,6-ylene carbonate) (Poly(oxycarbonyl-2,4-hexadiyne-1,6-diyl))... 

Up to now, a variety of non-zeolite/polymer mixed-matrix membranes have been developed comprising either nonporous or porous non-zeolitic materials as the dispersed phase in the continuous polymer phase. For example, non-porous and porous silica nanoparticles, alumina, activated carbon, poly(ethylene glycol) impregnated activated carbon, carbon molecular sieves, Ti02 nanoparticles, layered materials, metal-organic frameworks and mesoporous molecular sieves have been studied as the dispersed non-zeolitic materials in the mixed-matrix membranes in the literature [23-35]. This chapter does not focus on these non-zeoUte/polymer mixed-matrix membranes. Instead we describe recent progress in molecular sieve/ polymer mixed-matrix membranes, as much of the research conducted to date on mixed-matrix membranes has focused on the combination of a dispersed zeolite phase with an easily processed continuous polymer matrix. The molecular sieve/ polymer mixed-matrix membranes covered in this chapter include zeolite/polymer and non-zeolitic molecular sieve/polymer mixed-matrix membranes, such as alu-minophosphate molecular sieve (AlPO)/polymer and silicoaluminophosphate molecular sieve (SAPO)/polymer mixed-matrix membranes. 

Two high surface area carbons were investigated. The first carbon, derived from activation of carbonized poly(ethylene terephthalate) (APET) was ash-free [1]. The second, a commercially available carbon in wide use (R1 Extra, Norit), had an ash content of 6.2%. 

Particularly noteworthy are the tyrosine-derived polycarbonates (27), a family of polymers based on alkyl esters of desaminotyrosyl-tyrosine. The lead polymer in this family is poly[desaminotyrosyl-tyrosine ethyl ester (DTE) carbonate], a polymer derived from desaminotyrosyl-tyrosine ethyl ester. Other polymers in this series of tyrosine-derived polycarbonates are poly[desaminotyrosyl-tyrosine butyl ester (DTB) carbonate], poly[desaminotyrosyl-tyrosine hexyl ester (DTH) carbonate], and poly [desaminotyrosyl-tyrosine octyl ester (DTO) carbonate], where the letters B, H, and O indicate the presence of butyl, hexyl, or octyl ester pendent chains, respectively. 

The blend of poly(bisphenol A carbonate)-(poly(caprolactone) PC-PCL is particularly unusual in that both polymers are capable of crystallization and FT-IR has been used to study the state of order in these blends as a function of the method of preparation 254,255). In this case, PCL is a macromolecular plasticizer for PC. The PCL becomes progressively less crystalline as the concentration of PC increases. PC is amorphous if the blend is cast from methylene chloride but semicrystalline if cast from tetrahydrofuran. When PC in the pure form is exposed to acetone, it will not crystallize, but in the blend, exposure of acetone causes the PC to crystallize which emphasizes the additional mobility of the PC in the blend. 

Fig. 11. Release of drug from poly(trimethylene carbonate)-poly(adipic anhydride) (PT-MC-PAA) blends with different amounts of PAA ( ) 100%, ( ) 80%, (A) 50%, ( ) 20%, and( ) 0%...

Carbon C (electrographite, Acheson graphite) Carbon black-filled polymers, graphite-filled plastics, graphite-felt, glassy carbon (anode only), porous carbon, poly-p-phenylene (synthetic metal)... 

FIG. 17.2 Generalized curve for the thermal conductivity of amorphous polymers. ( ) silicon rubberr (A) polyisobutylene (O) natural rubber (0) polypropylene (A) poly(trifluoro chloro ethylene) ( ) poly (ethylene terephthalate) (V) poly(vinyl chloride) ( ) poly(methyl methacrylate) ( ) poly(bisphenol carbonate) ( ) poly(vinyl carbazole) lines are drawn according to Eq. (17.9). 

Poly[thio bis(4-phenyl)carbonate] Poly[2,2-propane bis 4-(2-methyl)phenyl carbonate] 383 368/418 513 443 1.5783 ... 

Poly (tri methyl Carbonate)-poly(adipic Anhydride) Blends... 

For, example, joining azo groups into are rigid carbon poly cycle, such as in bis (diazenes) N1 and N2. These proximate, parallel in-plane preoriented bis(diazenes) were synthesized by the Prinzbach group are candidates for lacking N=N/N=N photocycloadditions. Thett-tt distances (d) are equal to approximately 280 pm and the nitrogen lone pairs are unable to interact because of steric reasons. On the other hand, an efficient overlap of the p orbitals is enforced. 

Sodium-2-acrylamido-2-2-methylpropane sulfonate Sodium styrenesulfonate N-isopropylacrylamide Poly(oxyethylated alkylphenyl ether) Octyldecyltrimethylammonium chloride Propylene carbonate Poly(methyl methacrylate)... 

The influence of molecular structure on the degradation mechanism of degradable polymers of poly(tri-methylene carbonate), poly (trimethylene carbonate-co-caprolactone), and poly(adipic anhydride) was explored by Albertsson and Eklund [7]. Measuring the change of the mass and the molecular weight for the... 

Examples of copolymers with practical use between two different carbonates are poly[2,2-propanebis(4-phenyl)carbonate]-Woc/c-poly[2,2-propanebis[4-(2,6-dimethylphenyl)]carbonate], poly [1,1-cyclohexane bis(4-phenyl)carbonate]-co-[2,2-propane bis(4-phenyl)carbonate], and poly [1,1-dichloroethylene bis(4-phenyl)carbonate]-co-[2,2-propane bis(4-phenyl)carbonate]. Examples of copolymers between a carbonate and an ester are poly[4,4 -(1-methylethylidene)bis[phenol]-co-1,3-benzenedicarboxylic acid-co-carbonic acid], poly[4,4 -(1-methylethylidene)bis[phenol]-co-1,4-benzenedicarboxylic acid-co-carbonic acid], etc. Other known copolymers include poly[2,2-propanebis(4-phenyl)carbonate]-b/oc/(-poly(ethylene oxide), poly[2,2-propanebis(4-phenyl)carbonate]-Woc/c-polysulfone, poly[2,2-propanebis(4-phenyl)carbonate]-b/oc/c-poly(dimethylsiloxane), poly[2,2-propanebis(4-phenyl)carbonate]-b/oc/c-poly(methyl methacrylate), etc. These copolymers have in general good thermal resilience and decompose similarly to other polycarbonates [23]. 

Poly[l,l-(2-methyl propane) bis(4-phcny )carbonate] Poly(phenyl methacrylate)... 

Poly(2,2,2 -trimethylhexamethylene terephthalamide) Poly [2,2-propane te 4-(2,6-dimethylphenyl)[ carbonate] Poly[ 1,1 -(1 -phenylethane) bis(4-phenyl)carbonate]... 

Poly [2,2-propane fe 4-(2,6-dichlorophenyl) carbonate] Poly [2,2-propane te 4-(2,6-dimethylphenyl) carbonate] Poly [3,5-(4-phenyl-1,2,4-triazole)-1,4-phenylene -3,5-(4-phenyl-1,2,4-triazole)-1,3-phenylene] Poly[4,4 -diphenoxy di(4-phenylene)sulfone] Poly[4,4 -isopropylidene diphenoxy di(4-phenylene)sulfone]... 

Poly[di(n-propyl itaconate)] Poly[ethylene-N-(P-trimethylsilylethyl)imine] Poly[methane h/.v(4-phenyl)carbonate] Poly[N,N -(/ ,p -oxydiphenylene)pyromellitiinide] Poly[oxy(2,6-diisopropyl-l,4-phenylene)]... 

Backbone methylene carbons, poly(1-hexene), 141 Benzoyl peroxide catalyst, 13C NMR of PS, 190... 

Huikko, K., Ostman, P, Grigoras, K., Tuomikoski, S., Tiainen, V.-M., Soininen, A., Pnolanne, K., Manz, A., Franssila, S., Kostiainen, R., Kotiaho, T., Poly(dimethylsiloxane) electrospray devices fabricated with diamond-like carbon-poly(dimethylsiloxane) coated SU-8 masters. Lab Chip, 3,67-72, 2003. 

Poly(cyclohexene carbonate-6-ethylene oxide-i-cyclohexene carbonate) Poly(cyclohexene oxide-co-carbon dioxide) Poly[A -cyclopropylacrylamide-co-4-(2-phenyl-diazenyl)benzamido-A -(2-aminoethyl)acrylamide]... 

Besides classical inorganic glasses, there are certain optical plastics that are employed in the transparency and eyewear industry. For instance, thermoset resins based on allyl diglycol carbonate, poly(methyl methacrylate) derivatives, and bis-phenol A polycarbonates have been used to produce commercial plastic non-photochromic and photochromic lenses. As far as has been disclosed by the manufacturers, indolinospironaphthoxazines, INSO, and pyridobenzoxazines. 

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