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Xylan Extraction from Bamboo by Chemi-mechanical Method and Papermaking of the Residues
Received:July 16, 2020  
DOI：10.11980/j.issn.0254-508X.2020.12.001
Key Words:bamboo  PFI mill  alkali treatment  xylan  paper properties
Fund Project:制浆造纸工程国家重点实验室2020年度开放基金（202010）。
Author NameAffiliationPostcode
LIU Jianan National Engineering Research Center of Papermaking and Pollution Control，State Key Lab of Pulp＆Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province，510640 510640
DONG Xiaobin National Engineering Research Center of Papermaking and Pollution Control，State Key Lab of Pulp＆Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province，510640 510640
FAN Huiming National Engineering Research Center of Papermaking and Pollution Control，State Key Lab of Pulp＆Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province，510640 510640
MA Keshun Asia Pacific Senbo （Shandong） Pulp and Paper Co.， Ltd.， Rizhao， Shandong Province， 276800 276800
HUANG Jin National Engineering Research Center of Papermaking and Pollution Control，State Key Lab of Pulp＆Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province，510640 510640
LIU Qingjun National Engineering Research Center of Papermaking and Pollution Control，State Key Lab of Pulp＆Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province，510640 510640
MOU Hongyan National Engineering Research Center of Papermaking and Pollution Control，State Key Lab of Pulp＆Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province，510640 510640
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Abstract:In order to realize the comprehensive utilization of bamboo raw materials， using of chemi-mechanical method to extract xylan and the residues for papermaking was explored. The results showed that the optimal process conditions for the extraction of xylan by chemi-mechanical method were as follows. The bamboo chips treated by the screw press for 4 times in 35% consistency， then impregnated with alkali（6% dosage） solution（liquid/mass ratio 4∶1） for 90 min under room temperature， adjusted again the amount of alkaline to 80%（the alkali concentration was 10%） and the liquid ratio to 1∶8.Then the stock was pass through the PFI mill with a PFI mill rotation speed of 5000 （infeed distance of 0.1 mm）. Finally it was heat-treated in an autoclave with a temperature of 125℃ for 45 min. The yield of xylan reached 85.1%. The crude xylan was analyzed by FT-IR and 1H NMR， whose results showed that the crude xylan contained arabinose， glucuronic acid besides xylan. The results of papermaking experiment using the bamboo residues showed that the residue after extracting xylan could be used for papermaking， and the paper sample could meet the strength performance index of qualified cardboard paper products in the national standard GB/T 13024—2016.
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