4.2 Article

EXTRACTION OF BAMBOO SHOOT SHELL FIBERS BY THE ULTRASOUND-ASSISTED ALKALI-OXYGEN BATH METHOD

Journal

CELLULOSE CHEMISTRY AND TECHNOLOGY
Volume 55, Issue 5-6, Pages 675-680

Publisher

EDITURA ACAD ROMANE
DOI: 10.35812/CelluloseChemTechnol.2021.55.56

Keywords

bamboo shoot shell fibers; ultrasonic; alkali-oxygen bath; degumming rate

Funding

  1. National Natural Science Foundation of China Youth Fund [51503162]
  2. general project of Hubei Provincial Natural Science Foundation [2016cfb459]
  3. National Innovation Training Program for College Students [201910495014]
  4. Technical Innovation Program of Hubei Province [2019aaa005]
  5. Innovation Training Program for University Students of Hubei Province [s201910495063]

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Bamboo shoot shell fibers were extracted using the ultrasound-assisted alkali-oxygen bath method and the optimal degumming parameters were determined through orthogonal experiments. After degumming, pectin, lignin, and hemicelluloses were effectively removed from the bamboo shoot shell fibers.
Herein, bamboo shoot shell fibers were extracted by the ultrasound-assisted alkali-oxygen bath method. The effects of sodium hydroxide and hydrogen peroxide dosage, temperature and treating time on degumming properties were discussed. Taking the degumming rate as the index, the optimum technological parameters of alkali oxygen bath degumming were obtained by orthogonal experiments as follows: scouring temperature was 95 degrees C, alkali boiling time of 120 minutes, sodium hydroxide dosage of 20 g/L, hydrogen peroxide dosage of 24 mL/L, and the corresponding degumming rate was 70.07%. The structure of bamboo shoot shell fibers was examined by infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. The results showed that pectin, lignin and hemicelluloses were effectively removed from bamboo shoot shell fibers after degumming.

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