ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract. A series of poly(benzophenoneimide)s (Cm-BP-PIs) having n-alkyloxymethyl side chains (−CH2O-n-CmH2m+1, m = 4, 6, 8) have been examined by X-ray diffraction, differential scanning calorimetry (DSC) and polarizing optical microscopy. The samples showed basically two phase transitions and both transition temperatures decreased with increasing side chain length. The first transitions were ascribed to glass transitions and the second ones were assigned to liquid crystal-to-isotropic transitions. Eicosane (n-C20H42) which is chemically very similar to the side chain was miscible with the side chains of C8-BP-PI, which induced depression of the glass transition temperature.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002890050106
