Summary
By the solution condensation of 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA) with imidazole-blocked 2,5-bis[(n-alkyloxy)methyl]-1,4-benzenediisocyanates (Cm-BDIs) a series of aromatic polyimides (Cm-BP-PIs) having flexible (n-alkyoxy)methyl (-CH2O-n-CmH2m+1, m=4, 6, 8) side chains were prepared and characterized by IR- and 1H-NMR spectroscopy and their properties were measured and discussed in respect to the effects of side chains. Inherent viscosities of the polymers were in the 0.23–0.34 dL/g range. All the polymers were highly soluble in N,N′-dimethylpropyleneura(DMPU) and C6- and C8-BP-PIs even in CHCl3 at room temperature. UV-VIS spectra showed that the π-electrons are delocalized along the main chain. TGA studies showed a two-step pyrolysis behavior and in DSC Tg's of C4-, C6- and C8-BP-PIs were determined to be 184, 135 and 127 °C, respectively. Wide-angle X-ray diffractometry for as-polymerized samples revealed a quite low crystallinity with only loosely developed layered structure.
Similar content being viewed by others
References
Stenzenberger H (1976) Kautschuk, Gummi und Kunststoffe 8:477
Bessonov MI, Koton MM, Kudryavtsev VV, Laius LA (1987) POLYIMIDES Thermally Stable Polymers, Consultants Bureau, New York, P. 10
Adrova NA, Koton MM, Moskvina EM (1965) Dokl. Akad. Nauk SSSR 165:1069
Sroog CE (1991) Prog. Polym. Sci. 16:561
Ballauff M (1989) Angew. Chem. Int. Ed. Engl. 28:253
Ballauff M (1986) Macromolecules 19:1366
Helmer-Metzmann F, Rehan M, Schmitz L, Ballauff M, Wegner (1992) Makromol. Chem. 193:1847
Wenzel M, Ballauff M, Wegner G (1987) Makromol. Chem. 188:2865
Helmer-Metzmann F, Ballauff M, Schulz RC, Wegner G (1989) Makromol. Chem. 190:985
Park S-B, Kim H, Zin W-C, Jung JC (1993) Macromolecules 26:1627
Park S-B, Jung JC (1992) Makromol. Chem. 193:2519
Weinstock J (1961) J. Org. Chem. 26:3511
Johnston DA (1953) J. Am. Chem. Soc. 75:3636
Chow RC, Tarbell DS (1967) J. Org. Chem. 32:2188
Jung JC, Park S-B J. Polym. Sci. Part A: Polym. Chem. submitted
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Jung, J.C., Park, SB. Synthesis, characterization and properties of polyimides from 3,3′,4,4′-benzophenonetetracarboxylic dianhydride and imidazole-blocked 2,5-bis[(n-alkyloxy)methyl]-1,4-benzenediisocyanates. Polymer Bulletin 35, 423–430 (1995). https://doi.org/10.1007/BF00297607
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00297607