Synthesis and Characterization of New Poly(amide-imide)s Based on 1,4-Bis(trimellitimido)-2,5-dichlorobenzene

Content Provider	Semantic Scholar
Author	Yang, Chin-Ping Liou, Guey-Sheng Chang, Shyh-Yau Chen, Shin-Haur
Copyright Year	1999
Abstract	A series of new aromatic poly(amide-imide)s were synthesized by the tri- phenyl phosphite-activated polycondensation of the diimide-diacid, 1,4-bis(trimelliti- mido)-2,5-dichlorobenzene (I), with various aromatic diamines in a medium consisting of N-methyl-2-pyrrolidone (NMP), pyridine, and calcium chloride. The poly(amide- imide)s had inherent viscosities of 0.88 -1.27 dL g 21 . The diimide-diacid monomer (I) was prepared from 2,5-dichloro-p-phenylenediamine with trimellitic anhydride. All the resulting polymers were amorphous and were readily soluble in a variety of organic solvents, including NMP and N,N-dimethylacetamide. Transparent, flexible, and tough films of these polymers could be cast from N,N-dimethylacetamide or NMP solutions. Cast films had tensile strengths ranging from 92 to 127 MPa, elongations at break from 4 to 24%, and initial moduli from 2.59 to 3.65 GPa. The glass transition temperatures of these polymers were in the range of 256°-317°C, and the 10% weight loss tempera- tures were above 430°C in nitrogen. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 271-278, 1999
Starting Page	271
Ending Page	278
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1002/(SICI)1097-4628(19990711)73:2<271::AID-APP13>3.0.CO;2-6
Volume Number	73
Alternate Webpage(s)	http://homepage.ntu.edu.tw/~d98549008/FPML/Paper/1999/JAPS1999.pdf
Alternate Webpage(s)	https://doi.org/10.1002/%28SICI%291097-4628%2819990711%2973%3A2%3C271%3A%3AAID-APP13%3E3.0.CO%3B2-6
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article