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Erschienen in: Cellulose 2/2018

19.12.2017 | Original Paper

Phase transition and rheological behaviors of a novel cellulose solution with 4-(ω-(methylimidazole)alkyloxy)-4′-(cyano)-biphenyls as a mesogenic unit

verfasst von: Jun Song, Fang Liu, Bowen Cheng, Yangyang Han, Yunbo Zheng

Erschienen in: Cellulose | Ausgabe 2/2018

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Abstract

4-(ω-(methylimidazole) hexyloxy)-4′-(cyano)-biphenyl (CbP) as a mesogenic unit was dissolved in 1-allyl-3-methylimidazolium chloride (AMIMCl) to generate cellulose side-chain liquid crystal. The influence of CbP on AMIMCl and cellulose/AMIMCl was investigated. Turbidity tests and Fourier-transform infrared spectra (FTIR) indicated that homogeneous solution of CbP/AMIMCl was formed and there was no chemical reaction between CbP and AMIMCl. The steady and dynamic shear measurements, polarized optical microscopy, differential scanning calorimetry and X-ray diffractomer were used to study the rheological behaviors and phase transition of cellulose/CbP/AMIMCl system. The results showed that there was an obvious liquid crystal phenomenon in cellulose/CbP/AMIMCl solution when the mass fraction of CbP in AMIMCl ranges between 2.5 and 3.5%, and solution temperature is 40–80 °C. The deviations from Cox–Merz rules suggested the destruction of intra- and intermolecular hydrogen bonds among cellulose, CbP and AMIMCl under shear deformation.

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Metadaten
Titel
Phase transition and rheological behaviors of a novel cellulose solution with 4-(ω-(methylimidazole)alkyloxy)-4′-(cyano)-biphenyls as a mesogenic unit
verfasst von
Jun Song
Fang Liu
Bowen Cheng
Yangyang Han
Yunbo Zheng
Publikationsdatum
19.12.2017
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 2/2018
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-017-1616-z

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