Carbon tetrachloride as a thermoporometry liquid probe to study the cross-linking of styrene copolymer networks.
Mesh size distributions (MSDs) of swollen cross-linked styrene copolymer networks have been measured by thermoporometry using CCl(4) as a probe liquid. All numerical relationships required for the calculation of the MSD were established for both the liquid-to-solid and the solid-to-solid thermal transitions of CCl(4) and successfully validated on test samples. It was found that the polymer network, for both thermally and photo-cross-linked materials, was completely built in about 4 h of exposure. A clear correlation was established between the average mesh size of the swollen polymer network on one hand and the benzoyl peroxide groups content and swelling ratio on the other hand.
Laboratoire de Photochimie Moléculaire et Macromoléculaire, UMR CNRS 6505, Ecole Nationale Supérieure de Chimie de Clermont-Ferrand et Université Blaise Pascal, 63174 Aubière Cedex, France.
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D000465:Algorithms; D001585:Benzoyl Peroxide / Q000737:chemistry; D002251:Carbon Tetrachloride / Q000737:chemistry*; D003432:Cross-Linking Reagents / Q000737:chemistry*; D010316:Particle Size; D011137:Polystyrenes / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature
D003432:Cross-Linking Reagents; D011137:Polystyrenes; D002251:Carbon Tetrachloride; D001585:Benzoyl Peroxide