Hydrophobic-densified high-elastic waste-carton-derived biopolymer-coated fertilizers: Enhanced performance and controlled-release mechanism

Liu, Jiahui; Yang, Yuechao; Gao, Bin; Wang, Wentao; Cheng, Dongdong; Yao, Yuanyuan; Shen, Tze-Min; Yu, Zeping; Zhang, Ting; Wu, Jinpeng; Zhao, Xiaoyan; Weng, Jiaqi; Xie, Jiazhuo

doi:10.1016/j.jece.2023.110591

Journal of Environmental Chemical Engineering

2023

DOI: 10.1016/j.jece.2023.110591

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Hydrophobic-densified high-elastic waste-carton-derived biopolymer-coated fertilizers: Enhanced performance and controlled-release mechanism

Jiahui Liu

Yuechao Yang

Bin Gao

et al.

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2024

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Cited by 3 publications

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Enhancing Longevity and Mechanisms of Controlled-Release Fertilizers Through High Cross-Link Density Hyperbranched Bio-Based Polyurethane Coatings

Su,

Yang,

Gao

et al. 2024

ACS Sustainable Chem. Eng.

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The maturation of biobased polymer synthesis process has led to the rapid adoption of biobased controlled-release fertilizers (BCRFs). Despite this progress, the loose structure, low cross-linking density, and poor water repellency of current biobased coatings result in short controlled-release periods, which do not meet the long-term nutrient demands of crops throughout their reproductive phases. Moreover, existing modifications to address these issues often involve the addition of external additives, which can increase biotoxicity and cost. In this study, castor oil-based hyperbranched polyol (COHBPs) was synthesized from castor oil (CO) using a "one-pot method." We report the development of high cross-linking density biobased hyperbranched polyurethane (COHBPPFs) as a coating for BCRFs. Gel content and SEM analysis demonstrated that COHBPPFs exhibited a high degree of cross-linking. Mechanical testing using an electronic universal testing machine, along with AFM results, highlighted the superior mechanical properties of COHBPPFs compared to traditional coatings. COHBPPFs significantly enhanced controlled release performance, with a 3% coating content providing nearly 50 days of controlled release, a marked improvement over conventional coatings. The controlled release mechanism of COHBPPFs was elucidated by modeling the cross-linking process of COHBPs with PAPI. This study offers a comprehensive examination of CRF coatings from multiple perspectives and provides valuable insights into the development of high cross-link density, environmentally friendly, and renewable biobased CRFs.

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Enhancing Longevity and Mechanisms of Controlled-Release Fertilizers Through High Cross-Link Density Hyperbranched Bio-Based Polyurethane Coatings

Su,

Yang,

Gao

et al. 2024

ACS Sustainable Chem. Eng.

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Preparation and characterization of liquefied eggplant branch bio-based controlled-release fertilizer

Guo,

Zhuang,

Cui

et al. 2024

BMC Chemistry

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Bio-based coating materials have received increased attention because of their low-cost, environmentally friendly, and sustainable properties. In this paper, a novel coating material was developed to coat ureas using bio-based coating material derived from liquefied eggplant branches to form controlled-release ureas (CRUs). Also, the optimum proportion of liquefier was studied. Furthermore, dimethyl siloxane was used to modify liquified eggplant branches to make them hydrophobic, resulting in hydrophobic controlled-release ureas (SCRUs). This hydrophobic-enabled coating is environmentally friendly and highly efficient. The products were characterized by specific scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry, and the water contact angles of CRUs and SCRUs were determined. The nutrient-release characteristics of the SCRUs in water were determined at 25 °C and compared with those of CRUs. The results showed that the modification with dimethyl siloxane reduced the N release rate and increased the longevity of the fertilizer coated with hydrophobic bio-based coating material. In addition, organosilicon atoms on the SCRU surface also block the micro-holes on the coating and thus reduce the entry of water onto the coating. The results suggest that the new coating technology can create a hydrophobic surface on bio-based coating material and thus improve their controlled-release characteristics.

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Recent Advances in Co-Occurrence Network of Super-Wetting Materials and Their Application in Agricultural Engineering: A Critical Review

Chen,

Ren,

Lin

et al. 2024

Agronomy

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Global food security is a critical issue, necessitating greater attention to the relationship between agricultural productivity and the ecological environment. Super-wetting materials, with their unique micro-rough structures and low surface energy, hold significant potential for addressing challenges in agricultural engineering. This review explores the research landscape of super-wetting materials by analyzing their temporal distribution, institutional and scholarly contributions, co-occurrence networks, and emerging keywords. These analyses reveal the research strengths, hotspot distributions, evolving concepts, and development trends in the field. Additionally, recent advances in the application of super-wetting materials in agricultural engineering—such as agricultural films, controlled-release fertilizers, and pesticide spraying—are highlighted. In the future, super-wetting materials and their research prospects in agricultural engineering are proposed in combination with the development trend, which provides support and inspiration for cultivating and developing new quality productive forces in agriculture and promoting sustainable agricultural development.

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Hydrophobic-densified high-elastic waste-carton-derived biopolymer-coated fertilizers: Enhanced performance and controlled-release mechanism

Cited by 3 publications

References 38 publications

Enhancing Longevity and Mechanisms of Controlled-Release Fertilizers Through High Cross-Link Density Hyperbranched Bio-Based Polyurethane Coatings

Enhancing Longevity and Mechanisms of Controlled-Release Fertilizers Through High Cross-Link Density Hyperbranched Bio-Based Polyurethane Coatings

Preparation and characterization of liquefied eggplant branch bio-based controlled-release fertilizer

Recent Advances in Co-Occurrence Network of Super-Wetting Materials and Their Application in Agricultural Engineering: A Critical Review

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