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Article

Slow Release and Water Retention Performance of Poly(acrylic acid-co-acrylamide)/Fulvic Acid/Oil Shale Semicoke Superabsorbent Composites

1
Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Marcia Regina de Moura Aouada and Fauze A. Aouada
Polymers 2022, 14(9), 1719; https://doi.org/10.3390/polym14091719
Received: 4 April 2022 / Revised: 12 April 2022 / Accepted: 19 April 2022 / Published: 22 April 2022
In order to achieve the low cost and multifunction of superabsorbent composites, poly(acrylic acid-co-acrylamide)/fulvic acid/oil shale semicoke (PAMFS) were prepared by free radical copolymerization of fulvic acid (FA), oil shale semicoke (OSSC), acrylic acid (AA) and acrylamide (AM). The characterization results revealed that FA and OSSC were involved in the construction of a three-dimensional (3D) polymeric network via hydrogen bonding and covalent bonding. The water absorbency of PAMFS in distilled water and 0.9 wt% NaCl solution were 724 and 98 g/g, respectively. The FA slow release of PAMFS in distilled water and soil was achieved due to the interaction between FA and the functional groups of polymer matrix by hydrogen bonds and covalent bonds. Furthermore, the potted experiment indicated that the addition of PAMFS to soil can significantly promote plant growth compared with the pure soil, regardless of water stress. Therefore, this superabsorbent composite showed an excellent water absorption and salt resistance performance, as well as nice slow release performance. It has a broad application prospect. View Full-Text
Keywords: superabsorbent composite; fulvic acid; semicoke; slow release; plant growth superabsorbent composite; fulvic acid; semicoke; slow release; plant growth
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MDPI and ACS Style

Wang, Y.; Zhu, Y.; Liu, Y.; Mu, B.; Wang, A. Slow Release and Water Retention Performance of Poly(acrylic acid-co-acrylamide)/Fulvic Acid/Oil Shale Semicoke Superabsorbent Composites. Polymers 2022, 14, 1719. https://doi.org/10.3390/polym14091719

AMA Style

Wang Y, Zhu Y, Liu Y, Mu B, Wang A. Slow Release and Water Retention Performance of Poly(acrylic acid-co-acrylamide)/Fulvic Acid/Oil Shale Semicoke Superabsorbent Composites. Polymers. 2022; 14(9):1719. https://doi.org/10.3390/polym14091719

Chicago/Turabian Style

Wang, Yongsheng, Yongfeng Zhu, Yan Liu, Bin Mu, and Aiqin Wang. 2022. "Slow Release and Water Retention Performance of Poly(acrylic acid-co-acrylamide)/Fulvic Acid/Oil Shale Semicoke Superabsorbent Composites" Polymers 14, no. 9: 1719. https://doi.org/10.3390/polym14091719

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