Effects of nanofiber orientations on the fracture toughness of cellulose nanopaper
Effects of nanofiber orientations on the fracture toughness of cellulose nanopaper
复制标题
纳米纤维取向对纤维素纳米纸断裂韧性的影响
DOI:
10.1016/j.engfracmech.2018.03.034
复制
发表时间:
2018-05
影响因子:
5.4
通讯作者:
Feng Xi-Qiao
中科院分区:
文献类型:
--
作者:
Meng Qinghua;Li Bo;Li Teng;Feng Xi-Qiao
Cellulose nanopaper exhibits superior mechanical properties with both high strength and toughness, and the crack bridging mechanism of nanofibers makes the most significant contribution to its fracture toughness. In this paper, we investigate the fracture toughness of a mode-I crack in cellulose nanopaper by using a modified crack-bridging model. Different from previous crack-bridging models, we account for the effect of nanofibers inclined to the crack surfaces. Particular attention is given to the dependence of fracture toughness on the orientation distribution of nanofibers in the cellulose nanopaper. We use a cohesive law to account for the interfacial shear stress of nanofibers, which involve self-healing of hydrogen bonds at their interfaces. Two representative orientation distributions are considered, in which nanofibers are aligned or randomly oriented, respectively. The theoretical results agree well with relevant experiments. This work helps understand the structure–property relationship of cellulose nanopaper and design other fiber-reinforced nanocomposites.
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影响因子:
9.1
作者:
H. Sehaqui;Maël Allais;Qi Zhou;L. Berglund
通讯作者:
H. Sehaqui;Maël Allais;Qi Zhou;L. Berglund
影响因子:
6.2
作者:
H. Sehaqui;S. Morimune;T. Nishino;L. Berglund
通讯作者:
H. Sehaqui;S. Morimune;T. Nishino;L. Berglund
DOI:
10.1073/pnas.1502870112
发表时间:
2015-07
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
作者:
Hongli Zhu;Shuze Zhu;Z. Jia;Sepideh Parvinian;Yuanyuan Li;Oeyvind Vaaland;Liangbing Hu;Teng Li
通讯作者:
Hongli Zhu;Shuze Zhu;Z. Jia;Sepideh Parvinian;Yuanyuan Li;Oeyvind Vaaland;Liangbing Hu;Teng Li
影响因子:
64.8
作者:
Kermode, J. R.;Albaret, T.;De Vita, A.
通讯作者:
De Vita, A.
影响因子:
5.3
作者:
Shao, Yue;Zhao, Hong-Ping;Gao, Huajian
通讯作者:
Gao, Huajian