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Cellulose

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01.12.2014 | Original Paper

Rheological characteristics of nitrate glycerol ether cellulose gel based on phase separation in ternary system

verfasst von: Yunhua Zhang, Ziqiang Shao, Kezheng Gao, Jia Li, Xue Wu, Wenjun Wang, Feijun Wang, Yanhua Liu

Erschienen in: Cellulose | Ausgabe 6/2014

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Abstract

By non-solvent-induced phase separation, nitrate glycerol ether cellulose (NGEC) gels were formed in ternary NGEC/acetone/ethanol system. The rheological behaviors of NGEC gels were investigated using dynamic rheological measurements. The final compositions and morphologies of NGEC gels were influenced by the initial solvent/non-solvent (acetone/ethanol) ratios and NGEC concentrations. In addition, the effect of initial acetone/ethanol ratios on the characteristics of NGEC gels is different from the effect of NGEC concentrations. The critical strain of NGEC gels decreased almost with increasing NGEC concentration of gels by increasing initial acetone ratio, but it increased with increasing NGEC concentration of gels by increasing NGEC concentration beyond a certain concentration in 2/3 (w/w) acetone/ethanol solution. For all gels, the storage modulus (G′) and loss modulus (G′′) of NGEC gels rapidly increased with increasing NGEC concentration of gels. In addition, the curves for G′ and G′′ were temperature sensitive throughout the entire temperature sweep, which implied that the interactions between NGEC/solvent could be disrupted upon heating to higher temperatures.

Vorheriger Artikel Surface modification of cellulose microfibrils by periodate oxidation and subsequent reductive amination with benzylamine: a topochemical study

Nächster Artikel N-functionalization of chitosan with bis-O-glycosylated derivative of 2,2-bis(methylol)propionic acid

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Titel: Rheological characteristics of nitrate glycerol ether cellulose gel based on phase separation in ternary system
verfasst von: Yunhua Zhang
Ziqiang Shao
Kezheng Gao
Jia Li
Xue Wu
Wenjun Wang
Feijun Wang
Yanhua Liu
Publikationsdatum: 01.12.2014
Verlag: Springer Netherlands
Erschienen in: Cellulose / Ausgabe 6/2014
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI: https://doi.org/10.1007/s10570-014-0355-7

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