The Effect of Micronized Starch on The Properties of Starch-based Wood Adhesives
Utilizing an ultrafine grinding and classification system,tapioca starch was subjected to microfining to obtain starch particles of varying sizes.Subsequently,starch-based wood adhesives were prepared,and the impact of starch particle size on the performance of these adhesives was investigated.The study results revealed that finer microstructured starch exhibits superior bonding properties,with dry and wet shear strengths of 8.10 MPa and 4.86 MPa,respectively.The underlying mechanism may be attributed to the fact that smaller starch particles are more prone to graft copolymerization reactions,leading to the production of starch adhesives with lower film-forming temperatures and faster drying rates.