Polystyrene-poly texture

Significantly different seemed intiaUy the crystal morphology of polyethylene, polybutene-1, polypropylene, polystyrene, poly(4-methyl pen-tene-1), and polyisoprene polymerized with varying solvents and at varying temperatures (114, 123). Discrete hollow particles with a fibrous texture could be observed. The fibrils had an appearance similar to polyethylene crystallized from solution sheared by rapid stirring (118). A closer analysis of this similarity was carried out by Wikjord and Manley (124), Keller and Willmouth (117), and Ingram and Schindler (125) for polyethylene. 

Another type of materials is poly-DVB, which receives microporous texture if the monomer is polymerized in the presence of an appropriate amount of a thermodynamically good solvent, such as toluene. However, in our ISE experiments, these were inferior to hypercrosslinked polystyrene sorbents. 

Figure 3 Ivory cat, which was identified spectroscopically as a modern limitation composed of poly(methyl methacrylate) and polystyrene resins with added calcite to give the texture and density of ivory. Reproduced with permission from Edwards HGM and Farwell DW, Ivory and simulated ivory arte cts Fou-rier-transform Raman diagnostic study, Spectrochimica Acta, Part A, 51 2073-2081 1995, Elsevier Science B. V. (See Colour Plate 3).

---