Combination of ultrasonication/mechanical refining with alkali treatment to improve the accessibility and porosity of bamboo cellulose fibers for the preparation of magnetic bionanocomposite cellulose beads

Man Li; Guigan Fang; Zhaosheng Cai; Long Liang; Jing Zhou; Lulu Wei

doi:10.21967/jbb.v3i2.159

文章导航 > Journal of Bioresources and Bioproducts > 2018 > 3(2): 40-48

Man Li, Guigan Fang, Zhaosheng Cai, Long Liang, Jing Zhou, Lulu Wei. Combination of ultrasonication/mechanical refining with alkali treatment to improve the accessibility and porosity of bamboo cellulose fibers for the preparation of magnetic bionanocomposite cellulose beads[J]. Journal of Bioresources and Bioproducts, 2018, 3(2): 40-48. doi: 10.21967/jbb.v3i2.159

引用本文:

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Man Li, Guigan Fang, Zhaosheng Cai, Long Liang, Jing Zhou, Lulu Wei. Combination of ultrasonication/mechanical refining with alkali treatment to improve the accessibility and porosity of bamboo cellulose fibers for the preparation of magnetic bionanocomposite cellulose beads[J]. Journal of Bioresources and Bioproducts, 2018, 3(2): 40-48. doi: 10.21967/jbb.v3i2.159

引用本文:

Citation:

Man Li, Guigan Fang, Zhaosheng Cai, Long Liang, Jing Zhou, Lulu Wei. Combination of ultrasonication/mechanical refining with alkali treatment to improve the accessibility and porosity of bamboo cellulose fibers for the preparation of magnetic bionanocomposite cellulose beads[J]. Journal of Bioresources and Bioproducts, 2018, 3(2): 40-48. doi: 10.21967/jbb.v3i2.159

Combination of ultrasonication/mechanical refining with alkali treatment to improve the accessibility and porosity of bamboo cellulose fibers for the preparation of magnetic bionanocomposite cellulose beads

doi: 10.21967/jbb.v3i2.159

a. Institute of Chemical Industry of Forestry Products, CAF;Key Lab. of Biomass Energy and Material, Jiangsu Province;National Engineering Lab for Biomass Chemical Utilization;Key and Lab. on Forest Chemical Engineering, SFA, Nanjing 210042, China;
b. Collaborative Innovation Center for High Efficient Processing and Utilization of Forestry Resources, Nanjing Forestry University, Nanjing 210037, China;
c. Yancheng Institute of Technology, Yancheng 224051, China

基金项目:

The authors gratefully acknowledge the funding support for this research by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2017ZX003-08).

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出版历程

Combination of ultrasonication/mechanical refining with alkali treatment to improve the accessibility and porosity of bamboo cellulose fibers for the preparation of magnetic bionanocomposite cellulose beads

Man Li^a,
Guigan Fang^{a,b
, ,},
Zhaosheng Cai^{c
, ,},
Long Liang^a,
Jing Zhou^a,
Lulu Wei^a

a. Institute of Chemical Industry of Forestry Products, CAF;Key Lab. of Biomass Energy and Material, Jiangsu Province;National Engineering Lab for Biomass Chemical Utilization;Key and Lab. on Forest Chemical Engineering, SFA, Nanjing 210042, China;
b. Collaborative Innovation Center for High Efficient Processing and Utilization of Forestry Resources, Nanjing Forestry University, Nanjing 210037, China;
c. Yancheng Institute of Technology, Yancheng 224051, China

Funds:

The authors gratefully acknowledge the funding support for this research by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2017ZX003-08).

摘要

摘要: Ultrasonication and mechanical refining pretreatments were carried out to enhance alkali swelling of bamboo fibers to improve accessibility and porosity. Cellulose-based magnetic beads were synthesized with the alkali swollen bamboo fibers and Fe₃O₄ nanoparticles. Compared to the fibers treated with alkali alone, the water retention value (WRV) increased by 33.87% for the fibers treated by sonication and alkali, and by 94.58% for those treated by mechanical refining and alkali. The increased WRV was attributed to disruption of the crystalline region of fibers in the combined treatments which resulted in decreased crystallinity and degree of polymerization of cellulose. Furthermore, compared with the control sample which was treated by alkali alone, the specific surface area and pore volume of the samples treated by the combined processes increased markedly, which favored the adsorption of Fe₃O₄ nanoparticles in the synthesis of functional magnetic cellulose beads for the applications of protein immobilization, drug carrier and wastewater treatment.
- Pretreatment /
- Alkaline /
- Ultrasonic /
- Mechanical refining(PFI) /
- Magnetic nanocomposite
Abstract: Ultrasonication and mechanical refining pretreatments were carried out to enhance alkali swelling of bamboo fibers to improve accessibility and porosity. Cellulose-based magnetic beads were synthesized with the alkali swollen bamboo fibers and Fe₃O₄ nanoparticles. Compared to the fibers treated with alkali alone, the water retention value (WRV) increased by 33.87% for the fibers treated by sonication and alkali, and by 94.58% for those treated by mechanical refining and alkali. The increased WRV was attributed to disruption of the crystalline region of fibers in the combined treatments which resulted in decreased crystallinity and degree of polymerization of cellulose. Furthermore, compared with the control sample which was treated by alkali alone, the specific surface area and pore volume of the samples treated by the combined processes increased markedly, which favored the adsorption of Fe₃O₄ nanoparticles in the synthesis of functional magnetic cellulose beads for the applications of protein immobilization, drug carrier and wastewater treatment.
- Pretreatment /
- Alkaline /
- Ultrasonic /
- Mechanical refining(PFI) /
- Magnetic nanocomposite