Study on reduction potential of curing agent in sustainable bio-based controlled release coatings

Pang, Minhui; Dong, Shuqi; Zou, Guoyuan; Zhao, Jianguo; Li, Hongyan; Li, Lixia

doi:10.1016/j.polymertesting.2023.108193

Polymer Testing

2023

DOI: 10.1016/j.polymertesting.2023.108193

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Study on reduction potential of curing agent in sustainable bio-based controlled release coatings

Minhui Pang,

Shuqi Dong,

Guoyuan Zou

et al.

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2024

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Cited by 2 publications

References 42 publications

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Effect of Fatty Acids on Vegetable-Oil-Derived Sustainable Polyurethane Coatings for Controlled-Release Fertilizer

Pang,

Liu,

et al. 2024

Coatings

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Vegetable-oil-based polyurethane has become a promising sustainable candidate for controlled-release fertilizer based on green chemistry. The purpose of this study was to prepare a series of coatings from selective feedstocks including five vegetable oils with a high saturation degree, mono-unsaturation degree, or poly-unsaturation degree, considering that vegetable oil fatty acids played a key role in the synthesis of polyol and polyurethane. The effect of the type and proportion of fatty acids on the physicochemical properties, microstructure, and macro-properties of vegetable-oil-derived polyols and their resulting coatings was characterized and discussed. The position and number of the hydroxy groups were determined by the type and proportion of fatty acid, and polyol from linseed oil with a high poly-unsaturation degree and three carbon–carbon double bonds had a high hydroxyl value and functionality, whereas polyol from palm oil with a high saturation degree possessed the lowest hydroxyl value and functionality. The resultant coating from linseed-oil-based polyol had a good cross-linking density, and the nitrogen release longevity of coated urea was 56 days at a coating percentage of 3%, and its nitrogen use efficiency was increased by 27.15% compared with conventional urea. Although the palm-oil-based coating had good hydrophobicity, its coated urea was not ideal. Overall, this study has enriched theories of bio-based polyurethane coatings for controlled-release fertilizers; using vegetable oil with a poly-unsaturation degree, it is easy to obtain an excellent coating for controlled-release fertilizer, and this will help provide economic and environmental benefits.

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Effect of Fatty Acids on Vegetable-Oil-Derived Sustainable Polyurethane Coatings for Controlled-Release Fertilizer

Pang,

Liu,

et al. 2024

Coatings

View full text Add to dashboard Cite

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Recent Advances in the Preparation and Application of Bio-Based Polyurethanes

Mo,

Huang,

2024

Polymers

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Amid environmental pollution and resource depletion, developing and utilizing biomass resources as alternatives to petroleum is a prominent research focus. Driven by environmental protection and sustainable development, the shift from petroleum-based to bio-based polyurethane is a prevailing trend in polyurethane material development. Biomass sources such as vegetable oil, polysaccharides, and lignin offer extensive application prospects in bio-based polyurethane production. Functional modifications of these polyurethanes can further expand their application range. This article explores the preparation of various bio-based polyurethanes, their applications across different fields, and their anticipated future development and uses.

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Study on reduction potential of curing agent in sustainable bio-based controlled release coatings

Cited by 2 publications

References 42 publications

Effect of Fatty Acids on Vegetable-Oil-Derived Sustainable Polyurethane Coatings for Controlled-Release Fertilizer

Effect of Fatty Acids on Vegetable-Oil-Derived Sustainable Polyurethane Coatings for Controlled-Release Fertilizer

Recent Advances in the Preparation and Application of Bio-Based Polyurethanes

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