Abstract.
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.
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Received: 27 August 1997/Revised version: 2 November 1997/Accepted: 20 November 1997
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Puskas, J., Lanzendörfer, M. & Pattern, W. Mid-IR real-time monitoring of the carbocationic polymerization of isobutylene and styrene. Polymer Bulletin 40, 55–61 (1998). https://doi.org/10.1007/s002890050223
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DOI: https://doi.org/10.1007/s002890050223