Poly- methyl amino

Sfi.F-Test 19.4B Write the formula for (a) the monomer of poly(methyl methacrylate), used in contact lenses (17) (b) two repeating units of polyalanine, the polymer of the amino acid alanine, CH,CH(NH2)COOH. 

The blue dye (47), formed from the autoxidation of 4-/V,TV-di methyl-amino-2-hydroxyaniline, is the oxygen analogue of methylene blue. The autoxidation of 1,2,4-trihydroxybenzene, carried out in the presence of ammonia, gives the hydroxyphenoxazinone dye (48) via a 2,4-dihydroxyani-line intermediate (Scheme 17). Many types of phenoxazines, phenazines, and phenoxazinium salts can be obtained by autoxidation of polyhydroxyben-zenes and their amino derivatives. Some autoxidative dyes may give poly-... 

Starch (1), Cellulose (2), Cellulose Methyl Ether (3), Oxy-cellulose (4), PVA (5), Partially Hydrolyzed PVAc (6), Silk (.2), Wool (7), Hide-Powder (8), Natural Rubber Latex ( ), Synthesized Poly-(ot-Amino Acids) (10), Nylon-6 (11), Nylon-3 (12), Ot-Amylase (13), Lysozyme (14), RNA (15), Polyacrylonitrile (16), Polyvinyl-sulfonate (17) ... 

Complexes between chiral polymers having ionizable groups, and achiral small molecules become, under certain conditions, optically active for the absorption regions of the achiral small molecules. Dyes such as acridine orange and methyl orange have been used as achiral species, since they are in rapport with biopolymers through ionic coupling. This phenomenon has been applied to the detection of the helix chirality in poly-a-amino acids, polynucleotides, or polysaccharides when instrumental limitations prevent direct detection of the helices. 

NBD-amino acids (serine, threonine, valanie, phenylalanine, and histidine) were separated by using a 20 mM ammonium acetate buffer (pH 9.0) containing 10 mM copper acetate, 20 mM L-prolinamide, and 1 mM SDS. The elution order was the L-enantiomer followed by the D-form except in NBD-histidine. Weng et al. [32] described chiral separation of tryptophan on a poly(methyl methacrylate) microfluidic chip coated with bovine serum albumin (32 mm... 

Abbreviations y x AFM AIBN BuMA Ca DCP DMA DMS DSC EGDMA EMA EPDM FT-IR HDPE HTV IPN LDPE LLDPE MA MAA MDI MMA PA PAC PB PBT PBuMA PDMS PDMS-NH2 interfacial tension viscosity ratio atomic force microscopy 2,2 -azobis(isobutyronitrile) butyl methacrylate capillary number dicumyl peroxide dynamic mechanical analysis dynamic mechanical spectroscopy differential scanning calorimetry ethylene glycol dimethacrylate ethyl methacrylate ethylene-propylene-diene rubber Fourier transform-infra-red high density polyethylene high temperature vulcanization interpenetrating polymer network low density polyethylene linear low density polyethylene maleic anhydride methacrylic acid 4,4 -diphenylmethanediisocyanate methyl methacrylate poly( amide) poly( acrylate) poly(butadiene) poly(butylene terephtalate) poly(butyl methacrylate) poly(dimethylsiloxane) amino-terminated poly(dimethylsiloxane)... 

Polyamide copolymers containing a macromolecular graft substituent were prepared by condensing 4-amino-benzoic acid or a mixture of 1,4-phenylene diamine and adipic acid with 33%, 66%, and 90% 5-(poly(n-butylacrylate)cysteine macromonomer. A second macromolecular monomer, 5-(poly(methyl methacrylate)-cysteine, was also prepared and free radically copolymerized with perfluoromethyl methacrylate. 

Scheme 2 Hydrogen bonding between DBSA and tertiary amino-terminated poly(methyl methacrylate) [76]...

Thus, in the a mmetric nthesis observed in the addition of dodecanethiol to isopropenyl methyl ketone catalyzed by the terminal amino grcmp of poly(a-amino acid), the secondary conformation of the polymer catalyst plays an important role. The mechanistic pathway of this addition reaction is as follows (24,25), in which... 

Side-chain methylated amino acids were prepared from N-a-blocked starting materials in the same manner, and in the case of methylated poly lysine, was followed by acid hydrolysis of the peptide bonds. 

Studies with other poly(/3-i -aspartate)s demonstrate that these polymers not only adopt conformational patterns that are similar to poly(a-amino acids), but that they exhibit greater conformational versatility. The range of conformations now include extended chain structures, arranged as antiparallel packings that come about by stretching poly(a-methyl-/3-L-aspartate) films in boiling water.209 In solution, the helix—coil conformational transition is a phenomenon common to the whole family of poly-(a-alkyl-/3-L-aspartates).210 The ordered conformation is responsive to environmental factors such as temperature and solvent in much the same way as for poly(a-peptides). 

The liquid crystalline characteristics of cinnamate esters have been examined and novel azo bearing systems have been made based on 4-[N-ethyl-N-(2-methacryloyloxyethyl)]amino-4 -(2-cinnamoyloxyethylcarbonyl)-2 -(nitroazoben-zene). Poly[4-(2-methacryloylethoxy)azobenzene] has been found to be valuable for the photocontrol of liquid crystalline alignment as have polymers with benzylidene phthalimidine side chains. Poly(methyl methacrylates) with o-cinnamate side chains undergo polarisation isomerisation resulting in photoalign-... 

The polymerized acrylamide was completely bound in the graft since no homopolyacrylamide was found. Block polymers have been prepared by linear grafting 11). Eosin lactone was appended to poly (methyl methacrylate) chains by means of a terminal amino group to provide a polymeric initiator which was then used to photoinitiate polymerization of styrene and acrylamide. 

Scheme 18 Functionalization of poly(methyl acrylate)-Br with two agents 2-aminoethanol (x = 2) and 5-amino-1-pentanol (x = 5)...

The reaction of poly(methyl acrylate)-Br with 2-aminoethanol was expected to result in multiple substituted products. This result was ascribed to the fact that after the substitution of the bromine by 2-aminoethanol, formation of a six-membered ring could occur (Scheme 18). Afterwards, ring opening by attack of a second 2-aminoethanol molecule could lead to the double-substituted product. The a-bromo poly(methyl acrylate) could be suppressed by using 4-aminobutanol instead of 2-aminoethanol as a nucleophile, without side reactions (Scheme 18). For example, the yield of functionalization of poly( -butyl acrylate) with 5-amino-l-pentanol is close to 96% [197]. 

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