The Study on Nanocellulose and Their Biocomposites

摘要

Nanocellulose fibers (CNFs) with the average diameter below 100nm were successfully obtained by a high shear fluid processor, viz. a microfluidizer. Their large surface area and nano-scale dimensions can lead to the emerging materials for reinforcements in polymer composites, differentiating from common polymer composites and providing the opportunity for nano-engineered materials that could have not achieved from conventional materials. CNF nanopapers with synthetic fibers such as polylactic acid (PLA) were fabricated by a wet-laid sheet forming process, and then molded by high pressure calendering to manufacture CNF/PLA nanocomposites. The wet-laid process was found a good way to make CNF/PLA nanopapers and nanocomposites. Their mechanical performances were increased by the incorporation of CNFs due to the reinforcing effects of CNFs.