ISSN:
0887-624X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The intrinsic and thermal characteristics of poly(styrenephosphonate diethyl ester)s (PSP) are described. The properties of the polymer prepared by two synthetic procedures, phosphorylation of monodispersed polystyrene and polymerization of vinylbenzenephosphonate ester, are compared with chloromethylated polystyrene and with each other. Empirical formulas are presented for the relationships between the degree of polymerization, degree of phosphorylation, molecular weight, and intrinsic viscosity (in methanol and toluene). Thermal analysis reveals a sharp drop in Tg with an increase in degree of phosphorylation; Tg of the fully phosphorylated polystyrene is in the range of 9-30°C. The Tg ΔCp values show significant decrease with augmentation in the degree of phosphorylation, yielding a value of 14 cal g-1 for the fully phosphorylated polymer, compared with ∼ 29 cal g-1 for the parent polymer. The PSP is shown to have substantial capacity for dissolving heavy metal salts, such as UO2(NO3)2, causing significant elevation in the Tg.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pola.1989.080271210
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