Abstract
Fiber-reinforced thermosets composites are widely used in engineering fields, but it is difficult to be customized for objects with complex shapes. Photo-curing 3D printing technique can achieve high precision and customization for polymer composites preparation. Herein, we demonstrate a simple and convenient strategy to manufacture biocomposites from micro-scale bamboo fibers (MBFs) and a vinyl palm oil-based resins via photo-curing 3D printing. To improve the dispersion and stability of MBFs in the inks and the interfacial adhesion between fibers and matrix, the MBFs were modified with methacrylic anhydride to endow the fibers with C=C bonds. The modified MBFs could participate in the crosslinking of the bio-based matrix, thus greatly enhancing the mechanical strength and modulus as well as glass transition temperatures of the composites. More importantly, the matrix of the printed bio-based composites can be degraded in a mild condition, which is conducive to the recycle and utilization of fibers.
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