ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7

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Preparation of styrene oligomers. I. Synthesis and fundamental characteristics

J. Polavka, M. Ondrejička, A. Blažková, V. Reiser, and L. Lapčík

Department of Physical Chemistry, Slovak Technical University, 812 37 Bratislava

 

Abstract:  The polymerization of styrene by the effect of phosphoric acid and potas­sium bichromate in heterogeneous experimental arrangement was studied. Silica gel was used as a carrier of catalyst. The synthesis was carried out in the medium of nonpolar solvent (decalin) at 186°C. The reaction resulted almost in 100% conversion of monomer and a mixture of oligomers came into existence. The dimer (50 mass %) and trimer (33 mass %) component prevailed in this mixture. The fractionation and analysis of oligomer mixture was performed by rectification and gas chromatography. The obtained reaction products were characterized by means of mass spectroscopy, index of refraction, temperature increment of the index of refraction, average numerical molecular mass, and viscosity measurements in the temperature interval 20—50°C.

Full paper in Portable Document Format: 366a841.pdf

 

Chemical Papers 36 (6) 841–850 (1982)

Monday, January 18, 2021

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