PHOTOCHEMICAL SYNTHESIS AND CHARACTERIZATION OF HYPERCROSSLINKED POLYSTYRENE, A NOVEL POROUS ORGANIC MATERIAL

Benzoylated polystyrene (BPS) was subjected to UV radiation in solution in the presence of isopropanol where upon, it was observed to undergo essentially quantitative crosslinking to form polystyrene resin with tertiary hydroxyl functionality. The crosslinking kinetics was followed by IR spectroscop...

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Bibliographic Details
Published in:Journal of macromolecular science. Part A, Pure and applied chemistry Pure and applied chemistry, 1999-06, Vol.36 (12), p.1923-1933
Main Authors: George, Beena, Nasrullah, J. Mohammed, Dhamodharan, R.
Format: Article
Language:English
Subjects:
Applied sciences
Benzoylated Polystyrene
Crosslinking and degradation
Exact sciences and technology
Photochemical Crosslinking
Physicochemistry of polymers
Polymers and radiations
Polystyrene
Porous Organic Material
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Summary:Benzoylated polystyrene (BPS) was subjected to UV radiation in solution in the presence of isopropanol where upon, it was observed to undergo essentially quantitative crosslinking to form polystyrene resin with tertiary hydroxyl functionality. The crosslinking kinetics was followed by IR spectroscopy. The desired degree of crosslinking was accomplished by controlling the extent of benzoylation of the polymer. Following crosslinking, the gels were freeze-dried and suitably characterized by solid state NMR and IR spectroscopic techniques. Scanning electron microscopic studies reveal the formation of porous network. Some of the crosslinked resins, dried suitably, exhibit high surface area as confirmed by BET adsorption isotherm studies. † Part of this work was presented earlier at Macro '98. K. S. V. Srinivasan, Macromolecules New Frontiers, Allied Publishers, New Delhi. Vol. 1 1998, p. 89-92.
ISSN:1060-1325
1520-5738
DOI:10.1081/MA-100101634