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Crystalline Organization in Syndiotactic Polystyrene Gels and Aerogels
Author(s) -
Daniel Christophe,
Guerra Gaetano
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200550432
Subject(s) - polystyrene , tacticity , orthorhombic crystal system , materials science , chemical engineering , aerogel , solvent , phase (matter) , nanoporous , polymer chemistry , crystal structure , composite material , crystallography , organic chemistry , nanotechnology , chemistry , polymer , polymerization , engineering
The crystalline structure of syndiotactic polystyrene gels and aerogels has been investigated by using x‐ray diffraction. Results show that, depending on the solvent, the crystalline structure of the junction zones of the gels is a clathrate phase or the solvent free orthorhombic β‐form. For aerogels obtained from gels with a clathrate phase, the aerogel crystalline phase consists of the nanoporous δ‐form while for aerogels obtained from gels with the β‐form, the original crystalline structure is maintained.