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6603032 
Journal Article 
CHARACTERIZATION OF THE CHAIN STIFFNESS FOR A MESOGEN-JACKETED LIQUID-CRYSTAL POLYMER - POLY(2,5-BIS[(4-METHOXYBENZOYL)OXY]STYRENE) 
Wan, XH; Zhang, F; Wu, PQ; Zhang, D; Feng, XD; Zhou, QF; , 
1995 
1 
Macromolecular Symposia
ISSN: 1022-1360
EISSN: 1521-3900 
HUTHIG & WEPF VERLAG 
BASEL 
96 
1 
207-218 
English 
WOS:A1995RN06000019 
Narrow-distribution fractions of poly{2,5-bis[(4-methoxybenzoyl)oxy]styrene} ranging in weight-average molecular weight <(Mw)over bar> from 1.1X10(5) to 1.96X10(6) were studied by static light scattering and viscometry in THF at 25 degrees C. From <(Mw)over bar> and the intrinsic viscosity [eta] Mark-Houwink-Sakurada equation was formulated with K=7.54X10(-4) and alpha=0.82. The relation between [eta] and <(Mw)over bar> was analyzed according to Bohdanecky for the Kratky-Porod wormlike chain, the ranges of the mass per unit length M(L) and the persistence length q were estimated as 35 nm(-1)less than or equal to M(L) less than or equal to 42 nm(-1) and 11.5 nm less than or equal to q less than or equal to 13.5 nm, respectively. The values of alpha and q indicate that the polymer, though a liquid crystal polymer of the side-chain type, has wormlike chain in dilute solution as most main chain liquid crystal polymers. 
International Conference on Liquid Crystal Polymers 
BEIJING, PEOPLES R CHINA