This study examines the differences in fiber properties, such as chemical components,chemical group characteristics and degree of polymerization of eight major bamboo species growing in Fujian Province. The aim is to provide a theoretic basis for optimizing selection of raw bamboo fibers and designing of high-performance bamboo products. The content of nitric acid-ethanol cellulose and pentose of bamboo fiber varied with different dissociating methods, ' 30 % H2O2∶ 95 % HAC∶ H2O = 4 ∶ 5 ∶ 21' is relatively mild. The cellulose content of the eight bamboo species ranged from 80. 49 % to 87. 89 %. The pentose content varied between 13. 33 % and 19. 06 %. The fiber pentose content of Dendrocalamus latiflorus,D. oldham and Phyllostachys heterocycla cv. pubescens decreased with the increase of bamboo ages. while their cellulose content of increased from one-year-old to four-year-old bamboo then decreased. The degree of polymerization of the eight bamboo species ranged from958 to 1141,and their viscosity-average molecular weight were between 1. 5 × 105and 1. 8 ×105. The degree of polymerization decreased when time prolonged. FTIR spectra indicated that the main chemical components of bamboo fiber were cellulose,hemi-cellulose and lignin. Some absorption peaks representing the three main chemical components were small or even disappeared,suggesting that to some degrees,the lignin has been decomposed,and the basic structure of hemi-cellulose has been degradated.
Journal of Bamboo Research