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- W3197954319 abstract "Despite the thousands of years of wood utilization, the mechanisms of wood hygromechanics remain barely elucidated, owing to the nanoscopic system size and highly coupled physics. This study uses molecular dynamics simulations to systematically characterize wood polymers, their mixtures, interface, and composites, yielding an unprecedented micromechanical dataset including swelling, mechanical weakening, and hydrogen bonding, over the full hydration range. The rich data reveal the mechanism of wood cell wall hygromechanics: Cellulose fiber dominates the mechanics of cell wall along the longitudinal direction. Hemicellulose glues lignin and cellulose fiber together defining the cell wall mechanics along the transverse direction, and water severely disturbs the hemicellulose-related hydrogen bonds. In contrast, lignin is rather hydration independent and serves mainly as a space filler. The moisture-induced highly anisotropic swelling and weakening of wood cell wall is governed by the interplay of cellulose reinforcement, mechanical degradation of matrix, and fiber-matrix interface." @default.
- W3197954319 created "2021-09-13" @default.
- W3197954319 creator A5014744105 @default.
- W3197954319 creator A5017290925 @default.
- W3197954319 creator A5018560830 @default.
- W3197954319 creator A5065950067 @default.
- W3197954319 creator A5066741432 @default.
- W3197954319 creator A5090424061 @default.
- W3197954319 date "2021-09-10" @default.
- W3197954319 modified "2023-09-26" @default.
- W3197954319 title "Hygromechanical mechanisms of wood cell wall revealed by molecular modeling and mixture rule analysis" @default.
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- W3197954319 doi "https://doi.org/10.1126/sciadv.abi8919" @default.