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

Authors
  • Feng, Xinhao1
  • Yang, Zhaozhe2
  • Chmely, Stephen3
  • Wang, Qingwen4
  • Wang, Siqun5
  • Xie, Yanjun6
  • 1 Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang 150040, People's Republic of China; Center for Renewable Carbon, University of Tennessee, Knoxville, TN 37996, United States. , (China)
  • 2 Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang 150040, People's Republic of China. , (China)
  • 3 Center for Renewable Carbon, University of Tennessee, Knoxville, TN 37996, United States. , (United States)
  • 4 Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang 150040, People's Republic of China; College of Materials and Energy, South China Agricultural University, Guangzhou, Guangdong 510640, People's Republic of China. , (China)
  • 5 Center for Renewable Carbon, University of Tennessee, Knoxville, TN 37996, United States. Electronic address: [email protected] , (United States)
  • 6 Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang 150040, People's Republic of China. Electronic address: [email protected] , (China)
Type
Published Article
Journal
Carbohydrate polymers
Publication Date
Aug 01, 2017
Volume
169
Pages
272–281
Identifiers
DOI: 10.1016/j.carbpol.2017.04.001
PMID: 28504146
Source
Medline
Keywords
License
Unknown

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.

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