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    Microwave-assisted selective liquefaction was proposed and used as a novel method for the isolation of holocellulose fibers. The results showed that the bamboo lignin component and extractives were almost completely removed by using a liquefaction process at 120 8C for 9 min, and the residual lignin and extractives in the solid residue were as low as 0.65% and 0.49%, respectively. Increasing the reaction temperature or time could decrease the solid yield, but they can also enhance the removal of lignin and extractives from bamboo particles and increase the holocellulose content in the solid residue. The absorbance bands that characterized functional groups of lignin on the Fourier transform infrared spectra of the solid residue weakened or disappeared. The solid residue showed high crystallinity, indicating the removal of noncellulosic material. Small cracks were observed on the SEM images of the residue, which indicated that the fibers from liquefaction may be susceptible to chemical access or enzyme attack.

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    Xie, Jiulong; Hse, Chung-Yun; Shupe, Todd F.; Pan, Hui; Hu, Tingxing. 2016. Extraction and characterization of holocellulose fibers by microwave-assisted selective liquefaction of bamboo. Journal of Applied Polymer Science, Vol. 133(18): n/a-n/a.


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    bamboo, fiber, microwave, selective liquefaction

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