ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The influence of the spacer length (n = 2, 6, 8 and 11 methylene groups) on the polymorphism and the ferroelectric properties of liquid crystalline side-group polyacrylates with a 4-[(R)-4-(1-methylheptyloxy)-4′-biphenylyloxycarbonyl]phenoxy moiety was studied. Various molecular weights were obtained from the polymers with n = 8 and n = 11. All the polymers show SmC* phases. A SmC* phase polymorphism was even found for most of the polymers. In some of these SmC* phases, no ferroelectric properties could be measured. The structural differences between the SmC* phases and their influence on the appearance of the ferroelectric properties are not yet clear. However, a SmC̃* phase was put in evidence, revealing a tendency to a chevron-like ordering which may explain the complex SmC* polymorphism of these systems.
Additional Material:
12 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1992.021931216
Permalink