Acrylamide inverse miniemulsion polymerization: in situ, real-time monitoring using nir spectroscopy
AUTOR(ES)
Colmán, M. M. E., Chicoma, D. L., Giudici, R., Araújo, P. H. H., Sayer, C.
FONTE
Braz. J. Chem. Eng.
DATA DE PUBLICAÇÃO
2014-12
RESUMO
In this work, the ability of on-line NIR spectroscopy for the prediction of the evolution of monomer concentration, conversion and average particle diameter in acrylamide inverse miniemulsion polymerization was evaluated. The spectral ranges were chosen as those representing the decrease in concentration of monomer. An increase in the baseline shift indicated that the NIR spectra were affected by particle size. Multivariate partial least squares calibration models were developed to relate NIR spectra collected by the immersion probe with off-line conversion and polymer particle size data. The results showed good agreement between off-line data and values predicted by the NIR calibration models and these latter were also able to detect different types of operational disturbances. These results indicate that it is possible to monitor variables of interest during acrylamide inverse miniemulsion polymerizations.
Documentos Relacionados
- In Situ, Real-Time Catabolic Gene Expression: Extraction and Characterization of Naphthalene Dioxygenase mRNA Transcripts from Groundwater
- Real-time monitoring of nucleic acid ligation in homogenous solutions using molecular beacons
- Real-Time Monitoring of Intracellular Staphylococcus aureus Replication
- Real-time monitoring of in vitro transcriptional RNA synthesis using fluorescence resonance energy transfer
- Real-time monitoring of rolling-circle amplification using a modified molecular beacon design