ISSN:
0887-624X
Keywords:
3,3′,5,5′-tetramethyl-2,2-bis[4-(4-aminophenoxy)phenyl]propane (TBAPP)
;
direct polycondensation
;
polyamides
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A series of new soluble polyamides having isopropylidene- and methyl-substituted arylene ether moieties in the polymer chain were prepared by the direct polycondensation of 3,3′,5,5′-tetramethyl-2,2-bis[4-(4-aminophenoxy)phenyl]propane (TBAPP) and various aromatic dicarboxylic acids in N-methyl-2-pyrrolidinone (NMP) using triphenyl phosphite and pyridine as condensing agents. Polymers were produced with high yield and moderate to high inherent viscosities of 0.87-1.56 dL g-1. All the polymers could be readily dissolved in polar aprotic solvents such as NMP, N,N-dimethylacetamide and N,N-dimethylformamide, as well as less polar solvents such as m-cresol and pyridine. Some of them were even soluble in tetrahydrofuran. These polymers were solution-cast into transparent, flexible, tough films which were further characterized by x-ray and mechanical analysis. All of the polymers were amorphous and the polyamide films had a tensile strength range of 51-100 MPa, an elongation at break range of 4-11%, and a tensile modulus range of 1.90-2.53 GPa. These polyamides had glass transition temperatures between 188-255°C and 10% mass loss temperatures in the range of 439-468 and 454-483°C in nitrogen and air atmosphere, respectively. © 1998 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 36: 1075-1080, 1998
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
