ICCAS OpenIR
Design, synthesis, and characterization of a combined main-chain/side-chain liquid-crystalline polymer based on ethyl cellulose
Hu, Tianhui1; Xie, Helou1; Xiao, Jianbo1; Zhang, Hailiang1; Chen, Erqiang2
2010-06-01
Source PublicationCELLULOSE
ISSN0969-0239
Volume17Issue:3Pages:547-558
AbstractA novel combined main-chain/side-chain liquid-crystalline polymer based on an ethyl cellulose main chain containing azobenzene mesogens (AzoEC) was successfully synthesized. Molecular characterization of the resulting polymers with different degrees of substitution (DS) was performed with proton nuclear magnetic resonance ((1)H NMR), Fourier-transform infrared spectroscopy (FTIR), and gel permeation chromatography (GPC). Thermal stability was investigated by thermogravimetric analysis (TGA). The phase transitions and liquid-crystalline behavior of these polymers were investigated by differential-scanning calorimetry (DSC), polarized optical microscopy (POM), and wide-angle X-ray diffraction (WAXD). The results indicate that DS has substantial effect on the liquid-crystalline behavior of these polymers. AzoEC with low DS only shows the cholesteric phase similar to ethyl cellulose (EC). However, when DS increases to a specific value, AzoEC begins to show fascinating supramolecular structures. The supramolecular structure of AzoEC with maximum DS consisted of a large-scale ordered lamellar structure formed by EC main chains and a small-scale ordered structure formed by azobenzene mesogens.
KeywordDcc Coupling Liquid-crystalline Cellulose Derivatives Main-chain/side-chain Liquid-crystalline Polymer Phase Behavior Supramolecular Structures
DOI10.1007/s10570-009-9392-z
Indexed BySCI
Language英语
WOS IDWOS:000277637100007
PublisherSPRINGER
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/69646
Collection中国科学院化学研究所
Corresponding AuthorZhang, Hailiang
Affiliation1.Xiangtan Univ, Coll Chem, Key Lab Adv Funct Polymer Mat Coll & Univ Hunan P, Key Lab Polymer Mat & Applicat Technol Hunan Prov, Xiangtan 411105, Hunan, Peoples R China
2.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys,Minist Educ, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Hu, Tianhui,Xie, Helou,Xiao, Jianbo,et al. Design, synthesis, and characterization of a combined main-chain/side-chain liquid-crystalline polymer based on ethyl cellulose[J]. CELLULOSE,2010,17(3):547-558.
APA Hu, Tianhui,Xie, Helou,Xiao, Jianbo,Zhang, Hailiang,&Chen, Erqiang.(2010).Design, synthesis, and characterization of a combined main-chain/side-chain liquid-crystalline polymer based on ethyl cellulose.CELLULOSE,17(3),547-558.
MLA Hu, Tianhui,et al."Design, synthesis, and characterization of a combined main-chain/side-chain liquid-crystalline polymer based on ethyl cellulose".CELLULOSE 17.3(2010):547-558.
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