Poly styrene

Acrylonitrile-butadiene-styrene-poly(vinyl chlo- Nitrile resins... 

A number of thermoplastics undergo depolymerisation on heating. These include poly(styrene), poly(methyl methacrylate), and poly(oxymethylene). Such depolymerisation will occur regardless of the prevailing oxygen concentration and under well aerated conditions will provide a ready source of fuel for sustained combustion. 

Acrylic-poly(vinyl chloride) alloy Acrylonitrile-butadiene-styrene-poly(vinyl chloride) alloy (ABS-PVC)... 

Poly(styrene)-poly(acrylate) colloidal suspensions, 7 275 Polystyrene/polyfmethyl methacrylate) commercial block copolymers, 7 648t Polystyrenes. See also Polystyrene (PS) commercial, 23 364 general-purpose, 23 364 specialty, 23 364-366 stabilized, 23 366 tactic, 23 365... 

The absorption and emission of radiation in the near ultraviolet (UV) and visible regions of the electromagnetic spectrum are associated with electronic (and associated vibronic) transitions involving n- and/or n-electron systems of molecules. Synthetic and natural polymers absorb in the UV region and particularly strong absorption spectra are recorded for polymers containing aromatic and heteroaromatic groups (e.g., poly(styrenes), poly(vinyl naphthalenes), poly(vinyl carbazoles)). 

The synthetic methods and chemical characterization data for the various polymeric materials to be discussed in this work have been reported elsewhere [6-8]. In some cases copolymerization of the unchlorinated oxazolidinone monomer with other common monomers such as acrylonitrile, vinyl chloride, styrene, and vinyl acetate, using potassium persulfate as an initiator, was performed. In other cases the unchlorinated oxazolidinone monomer was grafted onto polymers such as poly(acrylonitrile), poly(vinyl chloride), poly(styrene), poly(vinyl acetate), and poly(vinyl alcohol), again using potassium persulfate as an initiator. 

Fig. 9. Thermogravimetric analysis of Poly(styrene), poly a-methylstyrene and copolymers...

Comehssen JJLM, Fischer M, Sommerdijk NAJM, Nolle RJM. Helical superstructures from charged poly(styrene)-poly(isocyanodipeptide) block copolymers. Science 1998 280 1427-1430. 

In polymers that exhibit tacticity, the extent of the stereoregularity determines the crystallinity and the physical properties of the polymers. The placement of the monomer units in the polymer is controlled first by the steric and electronic characteristics of the monomer. However, the presence or absence of tacticity, as well as the type of tacticity, is controlled by the catalyst employed in the polymerization reaction. Some common polymers, which can be prepared in specific configuration, include poly(olefins), poly(styrene), poly(methyl methacrylate), and poly(butadiene). 

Poly(isobutylene)/Poly(methyl methacrylate) Poly(styrene)/Poly(isobutylene)/Poly(styrene)) Poly(isobutylene)/Thermoplastic poly(urethane) Poly(isobutylene)/Pivolactone (29,30) (4,31,32) (33) (34)... 

A phase diagram constructed from experiments on a series of poly(styrene)-poly(isoprene) (PS-PI) diblocks is presented in Fig. 2.2 (Khand-pur et al. 1995) and this will be used as a guide for the various microstructures. In order to determine a phase diagram experimentally, a variety of methods are... 

A number of remarkable new morphologies have recently been discovered by Stadler and co-workers in poly (styrene) poly(butadiene)-poly (methyl methacrylate) (PS-PB-PMMA) triblocks, and their hydrogenated analogues. poly(styrene)-poly(ethylene-co-butylene) poly(methyl methacrylate) (PS-PEB-PMMA) (Breiner et al. 1996,1997 Krappe et al. 1995 Stadler et al. 1995). The common features of the polymers exhibiting this complex phase behaviour are that the midblock is the minority component and that the incompatibility between the outer blocks is much weaker than the incompatibility of each of... 

Results from TEM experiments on solutions of a series of poly(styrene)-poly(cinnamoylethyl methacrylate) (PS-PCEMA) diblocks with short PS blocks and long PCEMA blocks have been compared (Tao et al. 1997) to the theories for block copolymer micelles described above. Micelles of type IV in the Zhulina-Birshtein classification (Fig. 3.18) formed in cyclopentane, which is a selective solvent for PCEMA (coronal A block), when the ratio of was... 

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