期刊
SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS
卷 29, 期 1, 页码 65-73出版社
WALTER DE GRUYTER GMBH
DOI: 10.1515/secm-2022-0006
关键词
irradiation; soybean straw; graft; water absorption
资金
- Excellent young talents fund program of higher education institutions of Anhui province [gxyq2021226]
- Agricultural Products Processing Center of Chizhou College, Key nature project of Chizhou University [CZ2020ZRZ02]
- Key Discipline of Materials Science and Engineering, Chizhou University [czxyylxk03]
A novel superabsorbent copolymer (SAP) was developed by grafting acrylic acid onto pretreated soybean straw using gamma-ray irradiation. The highest water absorbency obtained was 1,489 g/g in distilled water and 56 g/g in 0.9 wt% NaCl solution when the ratio of acrylic acid to pretreated soybean straw was 6:1. This irradiation technique is superior to traditional methods with advantages such as less pollution, low-energy consumption, and high-water retention performance. The outcome opens up new pathways to synthesize environmentally safe superabsorbents applicable in the food, pharmaceutical, and medical industries.
A novel superabsorbent copolymer (SAP) was developed by grafting acrylic acid onto the pretreated soybean straw (PSBS) using gamma-ray irradiation. The structure of soybean straw, treated soybean straw, and SAP were characterized through Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TG), and scanning electron microscopy (SEM). The effect of irradiation dose, the dosage of cross-link agent, and the monomer ratio of the graft copolymer on the water absorbency of the SAP was investigated. The highest water absorbency of 1,489 g/g in distilled water and 56 g/g in 0.9 wt% NaCl solution was obtained, when the ratio of acrylic acid (AA) to PSBS was 6:1. This irradiation technique is superior to traditional methods with advantages such as less heavy pollution, low-energy consumption, and high-water retention performance. The outcome is deemed to open up new pathways to synthesize environmentally safe superabsorbents with applications in the food, pharmaceutical, and medical industries.
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