Volume 139, Issue 16 51975
ARTICLE

Preparation and properties of a biodegradability superabsorbent composite based on flax cake protein-g-poly (acrylic acid)/Kaolinite

Wenxu Zhang

Corresponding Author

Wenxu Zhang

Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, China

Correspondence

Wenxu Zhang and Ziqiang Lei, Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, 730070 Lanzhou, China.

Email: [email protected] (W. Z.) and [email protected] (Z. L.)

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Lulu Guo

Lulu Guo

Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, China

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Qian Liu

Qian Liu

Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, China

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Mei Yang

Mei Yang

Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, China

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Jing Chen

Jing Chen

Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, China

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Ziqiang Lei

Corresponding Author

Ziqiang Lei

Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, China

Correspondence

Wenxu Zhang and Ziqiang Lei, Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, 730070 Lanzhou, China.

Email: [email protected] (W. Z.) and [email protected] (Z. L.)

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First published: 30 November 2021
Citations: 5

Funding information: National Natural Science Foundation of China, Grant/Award Numbers: 31860237, 51863019

Abstract

The protein-based superabsorbent composite FCP-g-PAA/Kaolinite is prepared by grafting acrylic acid (AA) into the flax cake protein (FCP) using free radical polymerization in this study. The chemical structure, thermal stability, and the morphology of the FCP-g-PAA/Kaolinite are characterized by Fourier transform infrared, Thermogravimetric analysis, and scanning electron microscope. The results show that AA was grafted successfully into FCP. And, it has the maximum swelling capacity where the MBA concentration, APS concentration, Kaolinite concentration, FCP concentration, neutralization degree, and reaction time was 0.13%, 1.4%, 8%, 9%, 70% and 2 h, respectively. The swelling capacity reaches 860 g/g in distilled water, 238 g/g in tap water and 78 g/g in 0.9% NaCl. In addition, its water absorbency can still reach 60% after reuse for six times and the water retention rate of the material was 70% after 12 h. Therefore, FCP has a broad application prospect as a material for preparing superabsorbent composite.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are openly available in [repository name e.g “figshare”] at http://doi.org/[doi], reference number [reference number].

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