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JSIR Vol.71 [2012] >
JSIR Vol.71(08) [August 2012] >
| Title: | Synthesis, spectral and thermal study of novel bisbenzoxazines based on cardo symmetric double Schiff bases |
| Authors: | Patel, J V
Pathak, U G
Parsania, P H |
| Keywords: | Bisbenzoxazines
DSC
Ring-opening polymerization
Schiff bases
TGA |
| Issue Date: | Aug-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | This
study presents synthesis of bisbenzoxazines (BBOC, BBOM, BBOS and BBOE) of
symmetric double Schiff bases, by condensing 0.01 mol symmetric double Schiff
bases, 0.04 mol formaldehyde, and 0.02 mol aniline. Bisbenzoxazines are
thermally polymerized via ring-opening polymerization. Resultant cross-linked
polymers (CBBOC, CBBOM, CBBOS and CBBOE) and bisbenzoxazines were characterized
by solubility, IR, 1H NMR, DSC and TGA. Bisbenoxazine ring
transformation reaction occurs at high temperature as supported by exothermic
DSC transition. Cured resins possess high thermal stability (257-425°C) and
followed either single or multistep degradation kinetics. |
| Page(s): | 544-548 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1084 (Online); 0022-4456 (Print) |
| Source: | JSIR Vol.71(08) [August 2012]
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