The Study on Bamboo Microfibers Isolated by Steam Explosion and Their Comprehensive Properties  

作　　者：Qiushi Li Ronggang Luo Yu Chen Jinhui Xiong Bei Qiao Xijuan Chai Linkun Xie Juan Wang Lianpeng Zhang Siqun Wang Guanben Du Kaimeng Xu 

机构地区：[1]Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products,Southwest Forestry University,Kunming,650224,China [2]International Joint Research Center for Biomass Materials,Ministry of Science and Technology,Southwest Forestry University,Kunming,650224,China [3]Key Laboratory for Forestry Resources Conversion and Utilization in the Southwest Mountains of China,Ministry of Education,Southwest Forestry University,Kunming,650224,China [4]Center for Renewable Carbon,The University of Tennessee,Knoxville,TN,37996,USA

出　　处：《Journal of Renewable Materials》2023年第6期2809-2822,共14页可再生材料杂志（英文）

基　　金：This study was financially supported by the National Natural Science Foundation of China(NSFC)(32060381);the Applied Basic Research Programs of Yunnan Province(202201AT070058);the Scientific Research Funds of Educational Committee of Yunnan Province(2022Y552);the Opening Project of Guangxi Key Laboratory of Forest Products Chemistry and Engineering,China(GXFK2209);the High Level Innovative One-Ten-Thousand Youth Talents of Yunnan Province(YNWR-QNBJ-2020-203);the National College Students Innovation and Entrepreneurship Training Program(202110677009);the Major Basic Special Biological Resources Digital Development and Application Project in Yunnan Province(202002AA10007);the USDA National Institute of Food and Agriculture(1012359);“111”Project(D21027).

摘　　要：To overcome the shortage of wood resources as well as to develop novel natural fibers materials,the Chimonobambusa quadrangularis(CQ)and Qiongzhuea tumidinoda(QT)planted in Southwest China were effectively isolated by the steam explosion(SE).The fine and uniform bamboo microfibers derived from CQ and QT were obtained,and their smallest average widths were 12.62μm and 16.05μm,respectively.The effects of steam explosion on the micro-morphology,chemical composition,thermal stability,crystallinity,surface wettability,and mechanical properties of bamboo microfibers were comprehensively investigated.The results showed that the relative content of cellulose in bamboo microfibers increased but the hemicellulose and lignin contents decreased after SE.The degrees of crystallinity for CQ and QT increased from 40.49%and 39.46%to 68.90%and 55.78%,respectively.The thermal stability and surface hydrophilicity were also improved.The CQ microfibers had a maximum decomposition temperature of 2.79°C,a tensile strength of 58.54 MPa,an elongation at break of 0.6%,and a water contact angle of 2.7°higher than those of the QT microfibers.

关 键 词：Microfiber properties BAMBOO steam explosion Chimonobambusa quadrangularis Qiongzhuea tumidinoda 

分 类 号：TB30[一般工业技术—材料科学与工程]