ISSN:
0887-624X
Keywords:
thermosetting imides
;
1,4-phenylenebis(phenylmaleic anhydride)
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The dianhydride monomer 1,4-phenylenebis(phenylmaleic anhydride) was polymerized with various aromatic diamines in a one-step solution polymerization to afford high molecular weight, soluble polyimides containing backbone phenylmaleimide structures. The polymides were soluble in amide solvents, chlorinated hydrocarbons, and tetrahydrofuran at 25°C at a concentration of 15% (w/v), displayed molecular weight distributions (Mw/Mn) of 2.0-2.2 as determined by absolute GPC and showed Tg values of 240°C and above as measured by differential scanning calorimetry. In addition, polyimide thermosets were prepared from these materials by thermal cure at 350-360°C. The crosslinked polyimides displayed Tgs 20-25°C higher than their soluble precursors, and chloroform extraction indicated gel fractions ranging from 74-100% after cure. © 1994 John Wiley & Sons, Inc.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pola.1994.080321218
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