No abstract

SynopsisPolymers from tetrakis(hydruxymethy1)phosphonium chloride (THPC) or tris(hydroxymethy1)phosphine (THP) with ammonia show similar thermal degradation, but appear to be of different chemical structure. Solution reaction of THPC with urea or melamine or by solid-phase reaction with urea gives products ranging from water-soluble liquids to hard, brittle, insoluble polymers. Reaction of THPC with piperasine yields products of low thermal stability.

No abstract

Surface and volume resistivities, charge generation by friction with nylon, poly ethylene and Teflon, and rates of decay of charge in air were determined for 29 fabrics at 25, 38, and 65% RH. In addition, the coefficients of kinetic friction were determined at 65% RH. The initial charges generated were approximately the same for all the fabrics and were independent of relative humidity for the range used. However, these initial charges varied with the surfaces against which the fabrics rubbed, but the varia tion has no relationship to the coefficients of friction. For some of the fabrics, the decay curves (In voltage/time) were linear. However, for most of the fabrics, the decay curves were linear only after several minutes, and these curves are shown to be the sum of two linear components. Good correlation is shown to exist between the electrical resistivities and the rates of charge decay, especially at low values of relative humidity.

and obtained an MS for work on phosphorus-nitrogen polymer synthesis. He then started work toward a PhD at the University of Saskatchewan but returned to the University of Guelph after one year and obtained the first Canadian PhD in textile science for research on the flameproofing effect of boron-containing compounds. Since 1971, Dr. Kasem. has been a Postdoctoral Research Associate at the Swiss Federal Institute of Technology, working on flammability problems and differential dyeing of cotton fabric. H. Rex Richards was born in Canada and obtained a PhD from Leeds University. He has worked in the textiles and plastics industries and for the Canadian Defence ResearchBoard. As Department Chairman, he initiated a graduate program in textile science at the both the masters and doctorate levels. Dr. Richards is a Fellow of both the Textile Institute and the Plastics Institute and, among honors, watt the first recipient of the Canadian Textile Science Award. He has served on several national flammability committees and is a member of the Advisory Board of the recently formed Flammability Institute at the University of Detroit. He is now Head of the Department of Textiles and Clothing at