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Complexation of Syndiotactic Polystyrene with 12‐Crown‐4
Author(s) -
Kaneko Fumitoshi,
Kashihara Natsuko,
Tsuchida Tsuyoshi,
Okuyama Kenji
Publication year - 2010
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200900719
Subject(s) - polystyrene , crown ether , clathrate hydrate , thermogravimetric analysis , molecule , polymer chemistry , materials science , chloroform , tacticity , crystallography , raman spectroscopy , chemistry , organic chemistry , hydrate , polymer , composite material , polymerization , ion , physics , optics
Solid‐state complexation of syndiotactic polystyrene (sPS) with a crown ether compound, 1,4,7,10‐tetraoxa‐cyclododecane (12‐crown‐4), took place when a film of sPS/chloroform clathrate was subjected to a guest exchange procedure assisted with a plasticizing agent. The new guest 12‐crown‐4 molecules were incorporated into the crystalline region of the sPS film, without causing a large conformational change of host sPS helices. X‐ray diffraction and thermogravimetric investigations showed that sPS/12‐crown‐4 complex had a clathrate complex structure which contained four 12‐crown‐4 molecules per unit cell. IR and Raman data suggested that 12‐crown‐4 took a C i ‐type conformation in the sPS complex phase.