Lignin-coated cellulose nanocrystal filled methacrylate composites prepared via 3D stereolithography printing: Mechanical reinforcement and thermal stabilization

Carbohydrate Polymers
Xinhao FengYanjun Xie

Abstract

Various contents of lignin-coated cellulose nanocrystals (L-CNC) were incorporated into methacrylate (MA) resin and their mixture was used to prepare nanocomposites via 3D stereolithography (3D-SL) printing. Gaps were found between the L-CNC and MA matrix in 3D-SL printed nanocomposites before postcure. However, gaps decreased after postcure due to interactions between the L-CNC and MA molecules. Mechanical properties increased with the addition of 0.1% and 0.5% L-CNC after postcure, and the thermal stability was improved at 0.5% L-CNC. Dynamic mechanical analysis demonstrated that incorporation of L-CNC increased the storage modulus in the rubbery plateau. The loss factor had two transition regions, which gradually changed by merging together with increasing L-CNC content, and a broadening of the transition region was observed after postcure. In particular, the mechanical and thermal properties of 3D-SL printed nanocomposites, after postcure, exhibited higher improvement than those before postcure.

Citations

Feb 2, 2021·Chemical Society Reviews·Yijun ZhangJacques Lalevée
Nov 19, 2020·Macromolecular Rapid Communications·Vincent S D VoetKatja Loos
Jun 28, 2020·International Journal of Biological Macromolecules·Jing Jing LiaoM Hazwan Hussin
Apr 6, 2021·Biomacromolecules·Ioana ChiulanGary Chinga-Carrasco
Oct 3, 2018·ACS Sustainable Chemistry & Engineering·Wenyang XuChunlin Xu

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