Synthesis and characteristics of poly/bisdichloromaleimides/The characteristics of six bisdichloromaleimides with different aromatic structures are investigated. The compounds are prepared by reacting 2,3-dichloromaleic anhydride with 1,5-diaminonaphthaline; bis (m-aminophenyl)methylphosphine oxide; 2,5-bis (p-aminophenyl) 1,3,4-oxadiazole; 3,3-bis (p-aminophenyl)phthalide; 9,9-bis (p-aminophenyl) fluorene; 10,10-bis (p-aminophenyl)anthrone. Dynamic thermogravity is used to determine the effect of structural differences on the thermal characteristics of these compounds. These compounds are polymerized by nucleophilic displacement of chlorine with 9,9-bis (p-aminophenyl)fluorene. The polymers are then characterized by IR spectroscopy and reduced viscosity measurements. The anaerobic char yields of these polymers at 800 C are found to range from 55-60%. A complete loss of weight is observed between 600-650 C in the presence of air. In addition, the thermal cross-linking of these polymers is investigated.
Document ID
19830036257
Acquisition Source
Legacy CDMS
Document Type
Other - Collected Works
Authors
Varma, I. K. (NASA Ames Research Center Moffett Field, CA, United States)
Fohlen, G. M. (NASA Ames Research Center Moffett Field, CA, United States)
Parker, J. A. (NASA Ames Research Center Moffett Field, CA, United States)