Complexation of syndiotactic polystyrene with 12-crown-4.
Macromol Rapid Commun
; 31(6): 554-7, 2010 Mar 16.
Article
em En
| MEDLINE
| ID: mdl-21590941
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.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Macromol Rapid Commun
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Japão