Effect of interface control on properties of bamboo fibers/polylactic acid composites

In this study,three interface treatments of alkali(NaOH),isocyanate(MDI) and the combination of alkali and isocyanate were used as control methods on the composites interface of the bamboo fibers(BF) and polylactic acid(PLA),respectively.The results showed that all of the three kinds of the interface control methods could improve the interface adhesion properties,tensile strength,impact strength and water resistance of BF / PLA composites;after interface control,viscous flow activation energy of composites increased,but thermal flow became somewhat difficult due to crosslinking between BF and PLA;glass transition temperature and crystallization temperature of composites increased,and melting peak became narrow;both the thermal degradation temperature and heat stability of composites increased.The combined treatment of NaOH and MDI has the best positive interface control effects as well as the most significant effect on properties of composites.