Kinetics of trifluorovinyl ether cyclopolymerization via Raman spectroscopy
Polymerization kinetics of tris(trifluorovinyloxyphenyl)ethane (TVE) in the bulk are characterized by measuring the disappearance of the fluoro‐olefin Raman signal at 1831cm‐1 normalized to an aromatic ring signal as an internal standard. The nth order kinetic model (dx/dt = k(1 − x)n) was applied t...
Saved in:
Published in | Polymer international Vol. 46; no. 4; pp. 320 - 324 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Chichester, UK
John Wiley & Sons, Ltd
01.08.1998
Wiley |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Polymerization kinetics of tris(trifluorovinyloxyphenyl)ethane (TVE) in the bulk are characterized by measuring the disappearance of the fluoro‐olefin Raman signal at 1831cm‐1 normalized to an aromatic ring signal as an internal standard. The nth order kinetic model (dx/dt = k(1 − x)n) was applied to determine a reaction order of 2·0. Reaction rates below 85% conversion measured for various temperatures ranged from 2·2×10‐3min‐1 (t1/2 = 454 min) to 3·1×10‐1min‐1 (t1/2 = 3·3 min) for 130°C and 210°C, respectively. Above 85% olefin conversion, second order rate constants deviated from linearity as gelation ensued. An Arrhenius activation energy of 24·6 kcalmol‐1 was determined. The non‐destructive Raman technique was found to be an excellent method for measuring the cure kinetics in the bulk and may be applicable to ‘on‐line’ needs for general application of perfluorocyclobutane (PFCB) polyarylether materials. © 1998 SCI. |
---|---|
Bibliography: | ark:/67375/WNG-45KXP7X3-S istex:3D20A0F5D01039D1467E18747729473BB99555CF ArticleID:PI23 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0959-8103 1097-0126 |
DOI: | 10.1002/(SICI)1097-0126(199808)46:4<320::AID-PI23>3.0.CO;2-Y |