A Main-Chain de Vries Smectic Liquid Crystal Polymer Prepared by Hoveyda-Grubbs Catalyst Initiated Acyclic Diene Metathesis Polymerization

2009 ◽  
Vol 30 (22) ◽  
pp. 1894-1899 ◽  
Author(s):  
David M. Walba ◽  
Hong Yang ◽  
Patrick Keller ◽  
Chenhui Zhu ◽  
Renfan Shao ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Main Chain ◽  
Liquid Crystal Polymer ◽  
Acyclic Diene Metathesis ◽  
Grubbs Catalyst ◽  
Metathesis Polymerization ◽  
Smectic Liquid Crystal ◽  
Crystal Polymer ◽  
Acyclic Diene Metathesis Polymerization ◽  
De Vries

Rheology and Morphology of Smectic Liquid Crystal/Polymer Blends

2004 ◽  
Vol 37 (17) ◽  
pp. 6424-6432 ◽  
Author(s):  
Jun Yonezawa ◽  
Stephen M. Martin ◽  
Christopher W. Macosko ◽  
Michael D. Ward
Keyword(s):  
Liquid Crystal ◽  
Polymer Blends ◽  
Liquid Crystal Polymer ◽  
Smectic Liquid Crystal ◽  
Crystal Polymer

Persistence length and molecular mass distribution of a thermotropic main-chain liquid-crystal polymer

1991 ◽  
Vol 24 (8) ◽  
pp. 1950-1954 ◽  
Author(s):  
Herbert Kroemer ◽  
Rainer Kuhn ◽  
Harald Pielartzik ◽  
Wilfried Siebke ◽  
Volker Eckhardt ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Molecular Mass ◽  
Mass Distribution ◽  
Main Chain ◽  
Molecular Mass Distribution ◽  
Persistence Length ◽  
Liquid Crystal Polymer ◽  
Crystal Polymer

Study on crystallization structure and thermal behavior of iPP induced by a new liquid crystal nucleator

2019 ◽  
Vol 28 (2) ◽  
pp. 89-99 ◽  
Author(s):  
Xiaoxu Xu ◽  
Zhengzheng Hao ◽  
Chao Fan ◽  
Qifan Chen ◽  
Yanhua Lu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Crystallization Temperature ◽  
Liquid Crystal Polymer ◽  
Crystallization Time ◽  
Kinetic Properties ◽  
Scanning Calorimetry ◽  
Smectic Liquid Crystal ◽  
Crystal Polymer ◽  
High K ◽  
P Content

In this study, a new liquid crystal polymer, named as smectic liquid crystal polymer (LCPs-P), was synthesized by reacting diosgenyl 4-(10-undecen-1-yloyloxy) benzoate with polymethylhydrosiloxane using chloroplatinic acid as a catalyst. The mesomorphic properties of the LCPs-P were characterized with polarizing optical microscopy, differential scanning calorimetry (DSC), thermogravimetric analysis, and X-ray diffraction (XRD). Then, the influence of the LCPs-P as a new nucleator on the crystallization structures, thermal properties, and kinetic properties of isotactic polypropylene (iPP) was investigated by XRD and DSC. The experimental results indicated that the LCPs-P exhibited fan-shaped texture of a smectic A phase between 55°C and 318°C. The content of the β-crystal ( K β) of the iPP blends mainly depended on the LCPs-P content and the crystallization temperature. By optimally combining the LCPs-P content with the crystallization temperature, a high K β could be obtained. When the content of the LCPs-P was 0.9 wt%, the maximum K β could reach 51% after isothermal crystallization for 1 h at 130°C. Moreover, the addition of the LCPs-P could increase the crystallization temperature and shorten the crystallization time of the iPP blends.

Ionic conduction of lithium, sodium and magnesium salts within organised smectic liquid crystal polymer electrolytes

1998 ◽  
Vol 43 (10-11) ◽  
pp. 1217-1224 ◽  
Author(s):  
Felix B Dias ◽  
Simon V Batty ◽  
Ajay Gupta ◽  
Goran Ungar ◽  
Jonathan P Voss ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Polymer Electrolytes ◽  
Ionic Conduction ◽  
Liquid Crystal Polymer ◽  
Smectic Liquid Crystal ◽  
Crystal Polymer ◽  
Magnesium Salts
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