Thermally stable polymers: syntheses and properties |
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Page 80
As would be expected, the Tm of a material is inversely related to the size of the
amine hydrocarbon, ranging from 195°C for the dipiperidinyl to 320°C for Nylon
62; i.e., with larger aliphatic groups, less hydrogen bonding per unit length is ...
As would be expected, the Tm of a material is inversely related to the size of the
amine hydrocarbon, ranging from 195°C for the dipiperidinyl to 320°C for Nylon
62; i.e., with larger aliphatic groups, less hydrogen bonding per unit length is ...
Page 100
With pyromellitic dianhydride, any aromatic or bridged aromatic diamine gave a
Tg above 300SC; so the rigidity of this "anhydride seemed to mask (within the
limits of the equipment) any possible effect of aromatic amine. However, other
dian- ...
With pyromellitic dianhydride, any aromatic or bridged aromatic diamine gave a
Tg above 300SC; so the rigidity of this "anhydride seemed to mask (within the
limits of the equipment) any possible effect of aromatic amine. However, other
dian- ...
Page 110
Thermal stabilities of these systems being 365-370°C in air and 440-450°C in
argon, are limited by the cyclooctadiene and not the amine structure, regardless
of diamine incorporated. Glass transition temperatures are dependent on amine,
...
Thermal stabilities of these systems being 365-370°C in air and 440-450°C in
argon, are limited by the cyclooctadiene and not the amine structure, regardless
of diamine incorporated. Glass transition temperatures are dependent on amine,
...
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Contents
Introduction | 1 |
Backbones Containing Carbon Only | 29 |
Backbones Containing Carbon | 44 |
Copyright | |
9 other sections not shown
Common terms and phrases
acetone added air or nitrogen aliphatic amide amine anhydride backbone benzene C. S. Marvel carborane Chem chloride chloroform condensation cooled copolymer crosslinking crystalline cyclization decomposition diamine dianhydride dissolved dl/g DMAc DMSO dried ether ferrocene fibers films filtration flask functions groups heated at reflux Hergenrother heterocyclic HMPA hydrazide Imai imide inherent viscosity intermediate intrinsic viscosity isolated isothermal Japan Patent ladder loss by TGA m-cresol Macromol Macromolecules materials melt methanol Method mixture is stirred mmol modulus molecular weight monomer nitrogen oxadiazole oxide P. M. Hergenrother pendant phenyl phenylene poly polyhydrazide polyimides polymerization polyoxadiazoles polyphenylene postcure poured precipitate the polymer Preprints properties pyridine reaction room temperature siloxane sodium solid soluble solution solvents structure sulfone sulfuric acid synthesized thermal stability tion triazole U.S. Patent vacuo vacuum washed weight loss yellow yield