Poly domain morphologies

By this procedure it is possible to synthesize [150] block copolymers, having thermoplastic elastomeric properties, with a micro-domain morphology and glass transition temperatures of -120 and 105 °C, corresponding to polysiloxane and poly(MMA) blocks, respectively. 

Sauer, B.B. McLean, R.S. AFM and x-ray studies of crystal and ionic domain morphology in poly(ethylene-co-methacrylic acid) ionomers. Macromolecules 2000, 33, 7939. 

Figure 10 Variation of X-ray scattering intensity with angle for a poly-styrene-b/oc/c-polybutadiene-h/oc/c-polystyrene (10000 71000 10000 M ) copolymer having a domain morphology consisting of polystyrene cylinders in a polybutadiene matrix (reproduced from P. R. Lewis and C. Price, Polymer, 1971, 12, 258 with permission of IPC Business Press Ltd.)...

Morphology of the anionically synthesized triblock copolymers of polyfp-methyl-styrene) and PDMS and their derivatives obtained by the selective chlorination of the hard segments were investigated by TEM 146). Samples with low PDMS content (12%) showed spherical domains of PDMS in a poly(p-methylstyrene) matrix. Samples with nearly equimolar composition showed a continuous lamellar morphology. In both cases the domain structure was very fine, indicating sharp interfaces. Domain sizes were estimated to be of the order of 50-300 A. 

Large domains of oriented single crystals of poly(TCDU) and poly(DMDA) were produced on the alkali halide surface. Figures 1 and 2 show the typical elongated platelet morphology. Selected... 

Figure 1. Morphology of sequential IPNs. (a) Crois-poly (ethyl acrylate)-m/er-crojs-polystyrene, showing typical cellular structure and a fine structure within the cell walls, (b) Cross-poly (ethyl acrylate)-/ /cr-cross-polystyrene-s/a/-(methyl methacrylate), showing smaller domain structure. PEA structure stained with OsO. (Reproduced from ref. 5. Copyright 1972 American Chemical Society.)...

The variation of the domain sizes with crosslink density was recognized by Yeo et al. [28], investigating cross-poly(n-butyl acrylate)-inter-cross-polystyrene. Figure A shows the morphology of 50/50 compositions as a function of network I crosslinking level. The cellular structures are gradually transformed to finer, and more obviously cylindrical or worm-like shapes with increasing crosslink density. 

Figure 4.2 An Archimedean tile morphology for blends of poly(2-vinylpyridine-/)-isoprene-/)-vinylpyridine) with poly(styrene-/)-4-hydroxystyrene) in a 2 1 vinylpyridine/hydroxystyrene blend. The vinylpyridine/hydroxystyrene domains are the cylinders at the vertices of polystyrene hexagons within a polyisoprene continuous phase. Reprinted from Asari et al. (2006). Copyright 2006 American Chemical Society.

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