文献类型：期刊文献

英文题名：Ultra-microstructure analysis and model development of bamboo fiber cell walls

作者：Chen, Meiling[1,5] An, Xin[2] He, Yan[1] Cai, Liping[1] Liu, Rong[3] Fei, Benhua[4]

第一作者：Chen, Meiling

通信作者：Fei, BH[1]

机构：[1]Nanjing Forestry Univ, Coll Mat Sci & Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China;[2]Chinese Acad Forest, Res Inst Wood Ind, Beijing 100019, Peoples R China;[3]Southwest Forestry Univ, Coll Mat Sci & Chem Engn, Kunming 650224, Peoples R China;[4]Int Ctr Bamboo & Rattan, Inst New Bamboo & Rattan Based Biomat, Beijing Bamboo & Rattan Sci & Technol, Key Lab Natl Forestry & Grassland Adm, Beijing 100102, Peoples R China;[5]DeHua TB New Decorat Mat Co Ltd Enterprise Grad Re, Huzhou 313200, Peoples R China

年份：2024

卷号：280

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;EI(收录号：20244017135066);Scopus(收录号：2-s2.0-85205250143);WOS:【SCI-EXPANDED(收录号:WOS:001329167300001)】；

基金：The authors acknowledge the financial support from the China Postdoctoral Science Foundation (2023M730485) , Basic Science (Nat-ural science) Research Project in the Universities of Jiangsu Province (24KJB220008) and National Science Foundation of China (32101608, 32401675 and 32301676) .

语种：英文

外文关键词：Bamboo; fiber cell wall model; Microfibril angle

摘要：Bamboo fiber cell walls are crucial mechanical load-bearing units in plants, significantly influencing their physical and mechanical properties. This study explored the multi-layered structure and microfibril orientation of typical moso bamboo fiber with two broad layers. The microfibrils in the primary cell wall exhibited a disordered mesh-like structure with a microfibril angle (MFA) of 90 degrees. The alternating narrow and broad layers in the secondary walls constituted the growth cycle layer together. Within this structure, the microfibrils were oriented in both Z-helices and S-helices. In the narrow layers, the MFA transitioned gradually from outer to inner layers, ranging from approximately 70 degrees to 30 degrees. Conversely, the broad layers had smaller MFA, ranging from about 5 degrees to 20 degrees. Finally, a typical model of multi-layered microfibril orientation of 4-year-old moso bamboo fiber cells was proposed.