Thermally Stable Polymers: Syntheses and Properties |
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Page 104
Syntheses and Properties Patrick E. Cassidy. The problems here are low molecular weights and , of course , the lack ... weight due to thermal decomposition of the intermediate with prolonged heating . TGA for the dihydro material shows a ...
Syntheses and Properties Patrick E. Cassidy. The problems here are low molecular weights and , of course , the lack ... weight due to thermal decomposition of the intermediate with prolonged heating . TGA for the dihydro material shows a ...
Page 181
... molecular weight of the product will , of course , depend on the molecular weight of the precursor polyhydrazide . A polyoxadiazole with ninh = 1.9 dl / g ( DMSO ) has given by light - scattering techniques a molecular weight of 173,600 ...
... molecular weight of the product will , of course , depend on the molecular weight of the precursor polyhydrazide . A polyoxadiazole with ninh = 1.9 dl / g ( DMSO ) has given by light - scattering techniques a molecular weight of 173,600 ...
Page 208
Syntheses and Properties Patrick E. Cassidy. either air or nitrogen . Its molecular weight was low , shown by an inherent viscosity of 0.13 dl / g ( 0.25 % in formic acid ) . However , the tetrazole afforded a higher molecular weight ...
Syntheses and Properties Patrick E. Cassidy. either air or nitrogen . Its molecular weight was low , shown by an inherent viscosity of 0.13 dl / g ( 0.25 % in formic acid ) . However , the tetrazole afforded a higher molecular weight ...
Common terms and phrases
acetone added air or nitrogen aliphatic amide amine anhydride aramids aromatic backbone benzene C. S. Marvel carborane CHâ‚‚ CH3 CH3 CH3 Chem chloride chloroform condensation cooled copolymer crosslinking crystalline cyclization decomposition diamine dianhydride dl/g DMAC DMSO dried ether fibers films filtration functions groups heated Hergenrother heterocyclic HMPA hydrazide Imai imide inherent viscosity intermediate intrinsic viscosity isolated isothermal Japan Patent ladder m-cresol m-or Macromol materials melt methanol Method mixture is stirred mmol modulus molecular weight monomer NH-C NH2 NH2 NH2 nitrogen oxadiazole oxide P. M. Hergenrother phenyl phenylene poly polyhydrazide polyimides polymerization polyoxadiazoles postcure poured precipitate the polymer Preprints properties pyridine reaction reflux ring room temperature siloxane sodium solid soluble solution solvent structure sulfone sulfuric acid synthesized tensile strength tetraamines thermal stability thiadiazole tion triazole U.S. Patent vacuo vacuum washed weight loss yellow yield