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Polymers 2018, 10(7), 702; https://doi.org/10.3390/polym10070702

Cellulose-Based Absorbent Production from Bacterial Cellulose and Acrylic Acid: Synthesis and Performance

1,2,3,4
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1,2,3,5
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1,2,3,5,* , 1,2,3,5
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1
Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China
2
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
3
Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
4
University of Chinese Academy of Sciences, Beijing 100049, China
5
Xuyi Center of Attapulgite Research Development & Industrialization, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Xuyi 211700, China
*
Authors to whom correspondence should be addressed.
Received: 30 May 2018 / Revised: 21 June 2018 / Accepted: 21 June 2018 / Published: 25 June 2018
View Full-Text   |   Download PDF [3119 KB, uploaded 25 June 2018]   |  

Abstract

Cellulose-based superabsorbent was synthesized by bacterial cellulose (BC) grafting acrylic acid (AA) in the presence of N,N′-methylenebisacrylamide (NMBA) as a crosslinker and ammonium persulfate (APS) as an initiator. The influence of different factors on composite synthesis, including the weight ratio of the monomer to BC, initiator content, crosslinker content, AA neutralization degree, reaction temperature, and reaction time on the water absorbency of the composite, were systematically learned. Under the optimized conditions, the maximum water absorbency of the composite was 322 ± 23 g/g distilled water. However, the water absorbency was much less for the different salt solutions and the absorption capacity of the composite decreased as the concentration of the salt solutions increased. The pH value had a significant influence on water absorption performance, and with the increase of temperature, the water retention rate of the composite decreased. Additionally, the structure of this composite was characterized with nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The results of NMR and FT-IR provided evidence that the composite was synthesized by BC and AA, and the microstructure showed that it had good performance for water absorption. In addition, the composite possessed suitable thermal stability, and that it could be used in a few high-temperature environments. Overall, this composite is promising for application in water absorption. View Full-Text
Keywords: bacterial cellulose; superabsorbent; polymerization; function and structure bacterial cellulose; superabsorbent; polymerization; function and structure
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Luo, M.-T.; Li, H.-L.; Huang, C.; Zhang, H.-R.; Xiong, L.; Chen, X.-F.; Chen, X.-D. Cellulose-Based Absorbent Production from Bacterial Cellulose and Acrylic Acid: Synthesis and Performance. Polymers 2018, 10, 702.

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