Single step functionalization of celluloses with differing degrees of reactivity as a route for in situ production of all-cellulose nanocomposites
Single step functionalization of celluloses with differing degrees of reactivity as a route for in situ production of all-cellulose nanocomposites
复制标题
具有不同反应程度的纤维素的一步功能化作为全纤维素纳米复合材料原位生产的途径
DOI:
10.1080/20550324.2015.1118265
复制
发表时间:
2016
期刊:
影响因子:
4.6
通讯作者:
Lee K
中科院分区:
文献类型:
--
作者:
Lee K
A method of manufacturing all-cellulose nanocomposites using a single-step functionalization of two different celluloses with differing reactivities is presented. All-cellulose nanocomposites are produced by esterification of microcrystalline cellulose (MCC) in pyridine with hexanoic acid in the presence of bacterial cellulose (BC) followed by solvent removal. Neat MCC is more susceptible to esterification, with an accessible amount of hydroxyl groups of 1.79 compared to BC, with an accessible hydroxyl group content of 0.80. As a result, neat MCC undergoes severe bulk modification, turning into a toluene-soluble cellulose hexanoate (C 6-MCC) while BC undergoes surface-only modification. Solution casted C 6-MCC films have a tensile modulus and strength of 0.99 GPa and 23.1 MPa, respectively. The presence of 5 wt.% BC in C 6-MCC leads to an increase in tensile modulus and strength of the resulting nanocomposites to 1.42 GPa and 28.4 MPa, respectively.
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DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
A. E. Zachariades;R. Ball;R. Porter
通讯作者:
R. Porter
影响因子:
4.5
作者:
M. Kabeel;D. Bassett;R. Olley;P. Hine;I. Ward
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I. Ward
影响因子:
4.6
作者:
Lee, Koon-Yang;Buldum, Gizem;Bismarck, Alexander
通讯作者:
Bismarck, Alexander
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
C. Marais;P. Feillard
通讯作者:
P. Feillard
影响因子:
15
作者:
Nishiyama, Y;Langan, P;Chanzy, H
通讯作者:
Chanzy, H