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Chain Anisotropy of Side-Group Liquid Crystalline Polymers in Nematic Solvents

Kempe, Michael D. and Kornfield, Julia A. and Lal, Jyotsana (2004) Chain Anisotropy of Side-Group Liquid Crystalline Polymers in Nematic Solvents. Macromolecules, 37 (23). pp. 8730-8738. ISSN 0024-9297. https://resolver.caltech.edu/CaltechAUTHORS:20170724-093120654

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Abstract

We demonstrate a method for measuring the anisotropy of a side group liquid crystalline polymer (SGLCP) in a perdeuterated nematic solvent using small-angle neutron scattering. In this system scattering originates from both the polymer backbone and the large pendant side groups, causing the measured anisotropy to vary with molecular weight. Since it is the backbone anisotropy that is of interest, we show how to mathematically account for scattering due to the side groups. Using a molecular weight series of SGLCPs that have an oblate conformation, this method yields a constant ratio of the backbone radii independent of molecular weight and spacer length.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/ma034825fDOIArticle
http://pubs.acs.org/doi/abs/10.1021/ma034825fPublisherArticle
ORCID:
AuthorORCID
Kornfield, Julia A.0000-0001-6746-8634
Additional Information:© 2004 American Chemical Society. Received 17 June 2003. Published online 22 October 2004. Published in print 1 November 2004. The authors acknowledge financial support from the AFOSR LC-MURI (f4962-97-1-0014) and the ARCS foundation. We thank Neal Scruggs and Rafael Verduzco for help with the neutron scattering experiments and Ed Lang from IPNS for helping with the SANS setup.
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)f4962-97-1-0014
ARCS FoundationUNSPECIFIED
Issue or Number:23
Record Number:CaltechAUTHORS:20170724-093120654
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170724-093120654
Official Citation:Chain Anisotropy of Side-Group Liquid Crystalline Polymers in Nematic Solvents Michael D. Kempe, Julia A. Kornfield, and Jyotsana Lal Macromolecules 2004 37 (23), 8730-8738 DOI: 10.1021/ma034825f
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:79290
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:24 Jul 2017 16:41
Last Modified:03 Oct 2019 18:18

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