The glass transition relaxation in a side-chain liquid crystalline polymer studied by modulated temperature differential scanning calorimetry

2000 ◽  
Vol 2 (20) ◽  
pp. 4743-4747 ◽  
Author(s):  
Cristina Alvarez ◽  
Joaquim J. Moura-Ramos
Keyword(s):  
Differential Scanning Calorimetry ◽  
Glass Transition ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Side Chain ◽  
Temperature Differential ◽  
Scanning Calorimetry ◽  
Modulated Temperature

Synthesis and Characterization of a Novel Liquid Crystalline Polymer Bearing Azobenzene

2011 ◽  
Vol 181-182 ◽  
pp. 47-50
Author(s):  
Xin De Tang ◽  
Ye Chen ◽  
Xin Wang ◽  
Fa Qi Yu ◽  
Mei Shan Pei
Keyword(s):  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Gel Permeation Chromatography ◽  
Crystalline Polymer ◽  
Side Chain ◽  
Scanning Calorimetry ◽  
Polymer Bearing ◽  
Mesomorphic Properties ◽  
Azobenzene Groups

A novel liquid crystalline polymer bearing azobenzene groups in both main chain and side chain has been successfully synthesized by atom transfer radical polymerization (ATRP). Dual bromide-terminated azobenzene was used as the initiator for the ATRP of azobenzene-containing monomer (M6C). The structure of the resulting polymer was confirmed by nuclear magnetic resonance (NMR), and the molecular weight and its dispersity was characterized by gel permeation chromatography (GPC). The mesomorphic properties of this novel polymer were characterized by means of polarized optical microscopy (POM) and differential scanning calorimetry (DSC). The results demonstrated that this polymer can form mesophases.

Synthesis and Characterization of Hyperbranched Liquid Crystalline Polymer

2010 ◽  
Vol 428-429 ◽  
pp. 98-101
Author(s):  
Chen Xi Zhang ◽  
Shao Rong Lu ◽  
Jian Feng Ban
Keyword(s):  
Differential Scanning Calorimetry ◽  
Fourier Transform ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Synthesis And Characterization ◽  
Scanning Calorimetry ◽  
Liquid Polymer ◽  
Thermotropic Properties

Hyperbranched liquid crystalline polymer (HLCP) were prepared by pentaerythritol with 1,2,4-benzenetricarboxylic anhydride(BTCA) and p-hydroxy benzoic acid. The thermotropic properties, the melting point (Tm) and the isotropization temperature (Ti) of the synthesized HLCP were characterized by differential scanning calorimetry (DSC), fourier transform infrared spectroscopy (FTIR) and polarizing optical microscopy (POM). It showed that the new reactive thermotropic liquid polymer containing polyester mesogenic units exhibited thermotropic liquid crystalline properties between 140°C and 230°C.

Glass transition relaxation and fragility in a side-chain liquid crystalline polymer: a study by TSDC and DSC

Polymer ◽  
2000 ◽  
Vol 41 (8) ◽  
pp. 2907-2914 ◽  
Author(s):  
C. Alvarez ◽  
N.T. Correia ◽  
J.J. Moura Ramos ◽  
A.C. Fernandes
Keyword(s):  
Glass Transition ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Side Chain

Hemiphasmidic Side-Chain Liquid Crystalline Polymer: From Smectic C Phase to Columnar Phase with a Bundle of Chains as Its Building Block

2012 ◽  
Vol 1 (5) ◽  
pp. 641-645 ◽  
Author(s):  
Jun-Feng Zheng ◽  
Xin Liu ◽  
Xiao-Fang Chen ◽  
Xiang-Kui Ren ◽  
Shuang Yang ◽  
...  
Keyword(s):  
Building Block ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Side Chain ◽  
Columnar Phase ◽  
Smectic C
Sign in / Sign up

Export Citation Format

Share Document