|
二维码（扫一下试试看！） |
| Study on Preparation and Performances of Sodium Lignosulfonate/Polyvinyl Alcohol Superabsorbent Resin with Semi-Interpenetrating Network |
| Received:October 12, 2025 Revised:November 09, 2025 |
| DOI：10.11981/j.issn.1000-6842.2026.02.81 |
| Key Words:sodium lignosulfonate;semi-interpenetrating network;salt-tolerant;superabsorbent resin |
| Fund Project:福厦泉国家自主创新示范区城乡生态环境质量提升关键技术协同创新平台项目（2022-P-024）。 |
| Author Name | Affiliation | Postcode | | CHEN Huijun* | 1College of Environment and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108 | 350108 | | CHEN Ruoyi | 1College of Environment and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108 | 350108 | | LIU Yifan | 1College of Environment and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108 | 350108 | | LIU Minghua* | 1College of Environment and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108
2College of Environmental and Biological Engineering， Putian University， Putian， Fujian Province， 351100 | 351100 |
|
| Hits: 5 |
| Download times: 0 |
| Abstract: |
| Incorporating sodium lignosulfonate (LS) as a rigid bio-based framework， linear polyvinyl alcohol (PVA) and poly(acrylic acid-acrylamide) were introduced to form a semi-interpenetrating system within the covalent cross-linked network， a LS-grafted poly(acrylic acid-acrylamide)/PVA superabsorbent resin (LS-g-P(AA-co-AM)/PVA) with semi-interpenetrating network was prepared， and a composite architecture comprising a “sodium lignosulfonate-based bio-skeleton + semi-interpenetrating network” was constructed， which could overcome the limitations of traditional single cross-linked networks. The results showed that the multiples of water (liquid) absorbing of LS-g-P(AA-co-AM)/PVA in distilled water and NaCl solution with mass fraction of 0.9% were 1 492.1 and 183.6 g/g， respectively. Due to the triple synergistic effects of the dual-charge system formed by the sulfonate groups and carboxylate groups， the reversible hydrogen-bond network of PVA， and the ion-dipole coordination layer between the hydroxyl groups of PVA and Na⁺， LS-g-P(AA-co-AM)/PVA exhibited excellent salt-tolerance， with multiple of liquid absorbing of 123.6 g/g even in NaCl solution with mass fraction of 3%. In addition， LS-g-P(AA-co-AM)/PVA exhibited outstanding water retention， acid and alkali resistance， and recyclability. Its water retention rate remained as high as 61.0% after being left at 60 ℃ for 12 h， and the retention rate of multiples of water absorbing was 49.3% after 5 cycles. These showed that LS-g-P(AA-co-AM)/PVA had significant potential for applications in areas such as the reclamation of saline-alkali land and horticultural cultivation. |
| View Full Text View/Add Comment Download reader HTML |
