Allyl alcohol copolymers with styrene

Poly (styrene-co-acrylonitrile). See Styrene/acrylonitrile copolymer Poly (styrene-co-allyl alcohol). See Styrene/allyl alcohol copolymer Poly (styrene-co-butadiene). See Styrene/butadiene polymer Poly (styrene-co-divinylbenzene). See Styrene/DVB copolymer Poly (styrene-co-maleic anhydride). See Styrene/MA copolymer Poly (styrene-co-methyl methacrylate). See Styrene/methyl methacrylate copolymer Poly (styrene-co-a-methylstyrene). See Styrene/a-methyl styrene resin Poly (styrene-divinylbenzene). See Styrene/DVB copolymer Polystyrene, expandable Synonyms EPS Expandable polystyrene Expanded polystyrene XPS Definition Amorphous PS beads contg. pentane as a blowing agent and coated with a lubricant the polymer is converted to foamed articles with a closed cell structure by applic. of steam Properties Beads (0.4-1.5 mm diam.)... 

Fig. 2. FT-IR transmittance spectra obtained during the silylation of styrene-allyl alcohol copolymer with IPTES (left spectrum) and TESSA (right spectrum). The dotted and solid lines demonstrate the situations before and...

Vinyl amide. See Acrylamide Vinyl benzene. See Styrene Vinylbenzene, compd. with prop-2-en-1-ol. See Styrene/allyl alcohol copolymer Vinylbenzene polymer. See Polystyrene Vinylbenzol. See Styrene N-(2-(N-Vinylbenzylamino) ethyl)-3-aminopropylthmethoxysilane. See 3-(N-Styrylmethyl-2-aminoethylamino) propyltrimethoxysilane hydrochloride Vinyl bromide... 

Table 16. Characterisitics of styrene-allyl alcohol copolymers blended with PCL data taken from [92]...

Besides vinyl acetate monomer, three other components are neeessary to earry out an emulsion polymerization water, an emulsifier and/or a proteetive eolloid, and a water-soluble initiator. Most commonly, anionic long-chain alkyl sulfonates are used as surfactants in amounts up to 6%. Studies have shown that the rate of polymerization is dependent on the amoimt of emulsifier present, with the rates inereasing as the amoimt of emulsifier is increased up to a certain point and then falling olF as free-radieal ehain transfer to the surfaetant beeomes a serious competing side reaetion [240]. In general, surfactants are used in eombination with a protective colloid. Especially useful as protective colloids are poly(vinyl alcohol), hydroxyethyl cellulose, alkyl vinyl ether-maleic anhydride and styrene-allyl alcohol copolymers, and gum arable. Water-soluble initiators, particularly potassium persulfate, alkali peroxydisulfates, hydrogen peroxide, and various redox systems, are most commonly used. 

Propenenitrile, polymer with 1,3-butadiene. See Butadiene/acrylonitrile copolymer 2-Propenenitrile polymer with ethenylbenzene. See Styrene/acrylonitrile copolymer 2-Propene-1-ol. See Allyl alcohol Propene oxide. See Propylene oxide Propene polymer. See Polypropylene... 

Barnum et al. determined values of B for blends of PCL with copolymers of styrene and allyl alcohol with different hydroxyl (allyl alcohol) contents of 1.3-7.7 wt % [92]. They found values of B to vary with hydroxyl content but to be between about -4 J cm and -12 J cm see Sect. 17.2. 

Copolymers of styrene and allyl alcohol have the general structure 18 with the two different units in different proportions, x and y. 

Saha and co-workers [70] and Palit [66, 67] developed a dye-partition method for the determination of halogen atoms in copolymers of styrene, methylmethacrylate, methylacrylate, or vinyl acetate with a chlorine-bearing monomer such as allyl chloride and tetrachloroethylene. Copolymers were quaternised with pyridine, then precipitated with petroleum ether or alcohol, and fnrther purified by repeated precipitation from their benzene solutions with a mixture of alcohol and petroleum ether as the non-solvent. The precipitated polymers were then washed with petroleum ether and dried in air. The test for quaternary halide groups in polymers was carried out with a reagent consisting of disulfine blue dissolved in 0.01 M hydrochloric acid and the colour evaluated spectrophotometrically at 630 nm. Saha and co-workers [70] and Palit [66, 67] found that there may be some imcertainty in the quantitative aspects of this method. 

The properties of 1 1 copolymers prepared from allyl alcohol and derivatives with MA have been very briefly examined.The copolymers are soluble in a variety of organic solvents, including acetone, 2-butanone, ethanol, propanol, DMF, dimethylsulfoxide, THF, pyridine, and dilute ammonia or alkalin solutions. A similar copolymer may be prepared from monoalkyl esters of maleic acid. Copolymerization of styrene with mono-allyl maleate or fumarate hinders cyclization, due to the highly reactive styrene. ... 

Allyl alcohol-styrene copolymers have been esterified with... 

Polystyrene is immiscible with PC however, tetramethyl Bisphenol A polycarbonate (TMPC) is miscible and exhibits lest behavior [439]. The CPMAS NMR analysis gave indication of homogeneity of the TMPC/PS blend at the level of a few nanometers [440], consistent with SANS data of 2 nm [441]. Styrene-MMA copolymers are immiscible with PC, but miscible with TMPC [442]. Miscibility maps for SMMA copolymer blends with hexafluorobisphenol A-tetramethyl bisphenol A copolymers show areas of single phase behavior. TMPC miscibility windows with a series of styrene copolymers (SAN, SMA, styrene-allyl alcohol (SAAl)) have been reported [443 ]. Miscibility of the copolymers with TMPC was maintained for SAN (0-13 wt% AN), SMA (0-8 wt% MA) and SAAl (0-19 wt% aUyl alcohol). Dimethyl bisphenol A-tetramethyl bisphenol A PC copolymer blends with SMMA yielded miscibility with SMMA (< 37 wt%) and PC copolymer with > 60 wt% tetramethyl bisphenol A content [444]. Tetramethyl Bisphenol S polycarbonate is not miscible with polystyrene, but is miscible with styrene-acrylonitrile copolymers (range estimated to be 14 to 42 wt% AN) [445]. Miscibility was also observed with an a-methyl styrene-acrylonitrile copolymer (31 wt% AN). 

Xu et al. provide a method to fabricate a nanocomposite system with highly integrated functionalities for multimodal biomedical imaging and cancer therapy [154]. They encapsulated hydrophobic upconversion nanoparticles (UCNPs] together with iron oxide nanoparticles (lONPs] by using an amphiphilic block copolymer, poly (styrene-block-allyl alcohol] (PS g-b-PAA o]- via a microemulsion method, obtaining an UC-IO Polymer multi-... 

At 26.7 mbar pressure 40% weight toss main product is 2,4-diphenyl thiophene at least 11 unidentified minor products CO2, H2O, butene, isobutene, dimethyl ketene, styrene, methacrylic acid, succinic-type 5-membered cyclic anhydrides Chlorotrifluoroethylene, styrene, HQ, chloropentafluoropropene, ethene, chloroethene, totuene, a-melhylstyiene, dimer and trimer structures with some unsaturation S1F4 (fiom reaction of HF with glass). Distribution of products varies with polymer composition CO, CO2, propene, isobutene, dimethyl ketene, acrolein, allyl alcohol, toluene, styrene, cl-methylstyrene, ethylbenzene, glycidol, glycidylmethacrylate product distribution depends on copolymer composition... 

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