Mid-IR real-time monitoring of the carbocationic polymerization of isobutylene and styrene
- Cite this article as:
- Puskas, J., Lanzendörfer, M. & Pattern, W. Polymer Bulletin (1998) 40: 55. doi:10.1007/s002890050223
The in-situ monitoring of the living carbocationic polymerization of isobutylene (IB) and styrene (St) with a fiber optic Attenuated Total Reflection (ATR) probe in the mid-IR "fingerprint" range is reported here for the first time. Monomer consumption was followed by the disappearance of the C=C stretching for both IB and St, and the C−H bending of the CH3-group in IB. The formation of polyisobutylene (PIB) was also monitored by tracing the asymmetrical doublet characteristic of C−H bending of the t-butyl groups of the PIB. Conversion measurements by conventional off-line gravimetry correlated well with the new technique.