Macrofibers
with High Mechanical Performance Based on Aligned Bacterial Cellulose
Nanofibers
Version 5 2018-02-12, 14:45
Version 4 2017-10-17, 20:16
Version 3 2017-10-13, 13:04
Version 2 2017-06-09, 19:03
Version 1 2017-01-12, 16:37
Posted on 2018-02-12 - 14:45
Bacterial
cellulose (BC) nanofibers represent an emerging class of highly crystalline
bionanofibers with high intrinsic mechanical properties. The remarkable
nanofibers with oriented structure and strong interfibrillar interactions
can realize high-performance materials. In this study, we demonstrated
that macrofibers based on aligned BC nanofibers could be prepared
by wet spinning and drawing procedures. The relationship between process
conditions, structure, and mechanical properties of macrofibers were
investigated. The obtained macrofibers exhibited Young’s modulus
of 16.4 GPa and tensile strength of 248.6 MPa under the optimum process
conditions, in which nanofibers displayed a high degree of alignment.
Furthermore, we enhanced the interfacial interactions between nanofibers
and obtained better mechanical performance by multivalent ion cross-linking.
After exchanging the monovalent Na+ by Fe3+,
the dried macrofiber reached Young’s modulus of 22.9 GPa and
tensile strength of 357.5 MPa. Particularly, the resulting macrofibers
still maintained good mechanical properties with Young’s modulus
of 15.9 GPa and tensile strength of 262.2 MPa in the wet condition.
This research provided a good method to fabricate macrofibers from
BC nanofibers with good properties by continuous wet-spinning process.
These macrofibers can be easily functionalized and have promising
potential applications in smart textiles, biosensor, and structural
reinforcement.
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Yao, Jingjing; Chen, Shiyan; Chen, Ye; Wang, Baoxiu; Pei, Qibing; Wang, Huaping (2017). Macrofibers
with High Mechanical Performance Based on Aligned Bacterial Cellulose
Nanofibers. ACS Publications. Collection. https://doi.org/10.1021/acsami.6b14650
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AUTHORS (6)
JY
Jingjing Yao
SC
Shiyan Chen
YC
Ye Chen
BW
Baoxiu Wang
QP
Qibing Pei
HW
Huaping Wang