Hierarchical porous structures in cellulose: NMR relaxometry approach
Hierarchical porous structures in cellulose: NMR relaxometry approach
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纤维素中的分层多孔结构:NMR 弛豫测量方法
DOI:
10.1016/j.polymer.2016.06.036
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发表时间:
2016-08
期刊:
影响因子:
4.6
通讯作者:
Liu Ruigang
中科院分区:
文献类型:
--
作者:
Zhang Chao;Li Pingping;Zhang Yijin;Lu Fei;Li Weiwei;Kang Hongliang;Xiang Jun-feng;Huang Yong;Liu Ruigang
Hierarchical porous structures in cellulose materials are important for the dissolution, properties and applications of cellulose materials. Methods for characterizing the hierarchical porous structures in cellulose materials without changing its original state are still limited. In this work, we introduced nuclear magnetic resonance (NMR) relaxometry for characterizing the hierarchical porous structures in cotton fibers without modifying their structure during sample preparation. By this method, the changes of the porous structures in cotton samples were characterized. It was found that soaking cellulose in water and stewing cellulose inN,N-dimethylacetamide at high temperature could efficiently improve the accessibility of cellulose samples to the solvent molecules and expand the Amorphous Region in cellulose. The method provided in this work can be used for the evaluation of the hierarchical porous structures of cellulose materials without additional modified information, which is helpful to the utilization of cellulose in various fields.
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影响因子:
5.7
作者:
Yan Qing;R. Sabo;Yiqiang Wu;J. Y. Zhu;Z. Cai
通讯作者:
Yan Qing;R. Sabo;Yiqiang Wu;J. Y. Zhu;Z. Cai
影响因子:
10.2
作者:
HANSEN, PC
通讯作者:
HANSEN, PC
DOI:
--
发表时间:
2001
期刊:
IEEE Trans. Signal Process.
影响因子:
--
作者:
M. Levitt
通讯作者:
M. Levitt
影响因子:
4.6
作者:
Crawshaw, J;Cameron, RE
通讯作者:
Cameron, RE
影响因子:
5.7
作者:
E. Giménez-Martín;M. López-Andrade;A. Ontiveros-Ortega;M. Espinosa‐Jiménez
通讯作者:
E. Giménez-Martín;M. López-Andrade;A. Ontiveros-Ortega;M. Espinosa‐Jiménez