Research progress of pretreated straw fibers for the fabrication of composites with a polymer matrix
In recent years,straw fibers have attracted much attention in the development of bio-based composites.Straw fibers have abundant resources and broad prospects for application,but due to the large number of hydroxyl groups on the surface,their interfacial compatibility with nonpolar polymer matrices is weak,resulting in poor overall performance of the composites.In this paper,the existing pretreatment methods of straw fibers were reviewed,including the physical method,chemical method,biological method,physical-chemical combination method and other pretreatment methods.The effects of straw pretreatment methods on the properties of polymer matrix composites were discussed.Moreover,a comparison was conducted on the merits and demerits of different pretreatment technologies,as well as their prospects for application.On this basis,an outlook was made for straw fiber pretreatment research,with a view to providing reference for the design and development of new composite materials.
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