| 簡(jiǎn) 介： |
Banana fibers received four treatments, namely squeezing, alkali and hydrogen peroxide
treatment, washing with water, and drying. Thermoplastic starch composites was prepared with
glycerol as the plasticizer, banana fiber as reinforcement and thermoplastic cassava starch as matrix.
The banana fiber could increase processing torque highly, while the effects of fiber contents on
peak torque at 3min was so obvious. X-ray diffractograms illustrated that with increasing fiber
content, cellulose crystallinity at 22.5° gradually got stronger but starch crystallinity at 20° almost
didn’t. SEM micrographs showed good dispersion and adhesion between starch and fiber. Studies in
the dependence of mechanical properties of reinforced TPS on the contents of fiber that with
increasing fiber content from 0 to 20phr, the initial tensile strength was trebled up to 14.46 MPa,
while the elongation at break was reduced from 68 to 13%. TG mass loss curves showed that
thermal stability of this composites had great improved under 500℃. |
