CaltechAUTHORS
  A Caltech Library Service

Anomalous Concentration Effects on Phase Behavior and Nematic Order in Mixtures of Side-Chain Liquid Crystal Polymers and Low-Molecular-Weight Liquid Crystals

Zhuang, Bilin and Wang, Zhen-Gang (2012) Anomalous Concentration Effects on Phase Behavior and Nematic Order in Mixtures of Side-Chain Liquid Crystal Polymers and Low-Molecular-Weight Liquid Crystals. Macromolecules, 45 (15). pp. 6220-6229. ISSN 0024-9297. doi:10.1021/ma300657s. https://resolver.caltech.edu/CaltechAUTHORS:20120925-105542854

[img]
Preview
PDF - Published Version
See Usage Policy.

2MB

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20120925-105542854

Abstract

We study the anomalous concentration effects in mixtures of side-chain liquid crystalline polymers (SCLCPs) and low-molecular-weight liquid crystals (LMWLCs) by modifying the theory of Brochard, Jouffroy, and Levinson (BJL) to include the effects of the polymer backbone. Our new theory considers both the interaction of the polymer backbone with the global nematic field, as well as the local steric constraints due to the grafting of the side groups onto the polymer backbone. In addition, we consider the enhancement in the coupling between the pedant mesogens and the LMWLC molecules as the SCLCP concentration increases. The resulting phase diagram and nematic order parameters are in qualitative agreement with experimental observations, but drastically different from the predictions by the BJL theory.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/ma300657sDOIArticle
http://pubs.acs.org/doi/abs/10.1021/ma300657sPublisherArticle
ORCID:
AuthorORCID
Zhuang, Bilin0000-0003-2934-4264
Wang, Zhen-Gang0000-0002-3361-6114
Additional Information:© 2012 American Chemical Society. Received: March 30, 2012; Revised: May 30, 2012; Published: July 18, 2012. We thank Rui Wang for helpful discussions. This work was supported by the NSF under Grant CHE-1040558, and B.Z. gratefully acknowledges support as an A-STAR fellow.
Funders:
Funding AgencyGrant Number
NSFCHE-1040558
Agency for Science, Technology and Research (A*STAR)UNSPECIFIED
Issue or Number:15
DOI:10.1021/ma300657s
Record Number:CaltechAUTHORS:20120925-105542854
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120925-105542854
Official Citation:Anomalous Concentration Effects on Phase Behavior and Nematic Order in Mixtures of Side-Chain Liquid Crystal Polymers and Low-Molecular-Weight Liquid Crystals Bilin Zhuang and Zhen-Gang Wang Macromolecules 2012 45 (15), 6220-6229
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34348
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:25 Sep 2012 18:45
Last Modified:09 Nov 2021 23:07

Repository Staff Only: item control page