Chitin nanofibers were prepared by chemical pretreatment and mechanical treatments. The obtained nanofiber solution formed films through vacuum filtration, and then they were impregnated into polyether sulfone (PES) resin to prepare the chitin nanofibers/PES composite films. The morphology of the nanofibers was characterized by field emission electron microscopy (FE-SEM). The light transmittance and thermal expansion properties of the chitin nanofiber/PES composite film were investigated by UV-visible spectrometer and thermomechanical analysis. The tension properties of the chitin nanofiber/PES composite film were tested by a universal materials mechanical testing machine. The results showed that the diameter of the chitin fibers reached the nanometer level, and with the combination of the mechanical processing method, the diameter of the chitin nanofibers gradually decreased. Chitin nanofiber composite films maintained high light transmittance, and compared with the resin matrix, their thermal stability and mechanical strength were apparently enhanced. Chitin nanofiber composite films possess high light transmittance and low thermal expansion, which have potential applications in optical substrates and displayers.
DENG Qiaoyun
,
LI Dagang
,
SHAO Xu
,
HU Qinqin
,
LI Jing
,
CHEN Chuchu
. Chitin Nanofiber/Polyether Sulfone Composite Films with High Transparent and Low Coefficient of Thermal Expansion[J]. Science & Technology Review, 2014
, 32(4-5)
: 45
-50
.
DOI: 10.3981/j.issn.1000-7857.2014.h1.006
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