INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Cong Jiang,Jiaming Wu,Hong Wang,Yehan Tao,Jie Lu,Jinwen Hu,Jian Du,Haisong Wang
Biodegradable cellulosic mulch has been demonstrated as the promising alternative to traditional plastic mulch film in agriculture, whereas the highly hydrophilic property and poor wet strength severely restricted their practical application. Herein, a new waterproof dialdehyde cellulose (OR)-polyamide epichlorohydrin (P)-alkyl ketene dimer (A) (OR-P-A) was carefully designed as the green mulch film. The hydrogen bonds and Schiff base reaction between -CHO on dialdehyde cellulose fibers and -NH 2 on PAE reinforced the interfacial interaction of cellulosic fibers. Furthermore, the formed β -keto ester bonds of -OH on cellulose with AKD improved the water resistance of paper fiber. Compared with the pristine cellulose film, the dry and wet tensile strength of OR-P-A 2 were increased to 17 MPa and 3 MPa, respectively. Moreover, the water contact angle was increased from 25° for pristine cellulose film to 124° for OR-P-A 2 . In addition, the germination rate of cabbage seeds covered by OR-P-A 2 was similar to that of commercial polyethylene film in practical application. This strategy proposed a novel method to improve the hydrophobicity of cellulose film, which boosting the development of biodegradable mulch film and “green” agriculture.
研究领域:
材料科学
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农业科学
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DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2023
·
IF 6.8
Teng Wang,Lin Liu,Qingsong Zhao,Zhaofu Meng,Wenbin Li
To determine the fates of the persistent pollutants cadmium (Cd) and micro-plastics in agricultural soils, an in-depth understanding of the interactions between Cd and mulching film is required. In the present work, pot experiments are conducted under natural conditions to study the influence of various Cd concentrations on the aging process of polyethylene mulching film in soil collected from Changzhi, Shanxi Province. The results indicate that during 150 days, the aging degree of the mulch film increases gradually as the increased Cd concentration in the soil. Further, the results of attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectrometry and X-ray photoelectron spectroscopy (XPS) demonstrate that the average vinyl index (VI) of the aging mulch film increases from 1.29 to 1.82, while the oxygen-to-carbon (O/C) ratio of the mulch film decreases significantly from 0.344 to 0.045, as the Cd concentration is increased from 0 to 10 mg kg –1 . When the aging time exceeds 90 days, the oxygen-containing functional groups (C–O and C O) generated consumed by the adsorbed Cd. In addition, electron paramagnetic resonance (EPR) measurements indicate that Cd both enhances the formation of hydroxyl radical ( · OH) on the surface of the mulch film and prevents the combination of · OH and electrons, thereby accelerating the aging of the mulch. Hence, the present study indicates that the presence of Cd will hasten the decomposition of mulch, which will inevitably result in the faster release of micro-plastics from the mulch into the soil environment.
研究领域:
环境科学
·
土壤学
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DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Muyesaier Tudi,Linsheng Yang,Jiangping Yu,Binggan Wei,Yuan Xue,Fang Wang,Linfeng Li,Qiming Jimmy Yu,Huada Daniel Ruan,Qin Li,Ross Sadler,Des Connell
Drip irrigation is a valuable method for optimising water and fertiliser usage, motivating its increasing use. However, the ecological effects of drip irrigation fertilisation have not been sufficiently evaluated, limiting its effective and widespread use. Within this context, we aimed to determine the effects and potential ecological risks of using polyethylene irrigation pipes and mulch substrate under various drip irrigation conditions as well as burning of waste pipes and mulch substrate. Laboratory simulations of field conditions were used to determine the distribution, leaching, and migration pattern of heavy metals (Cd, Cr, Cu, Pb, and Zn) from plastic drip irrigation pipes and agricultural mulch substrate into various solutions. Maize samples obtained from drip-irrigated fields were analysed to determine the presence of heavy metal residues and assess the risk of heavy metal contamination. Heavy metal leaching from pipes and mulch substrate was high under acidic conditions, while the migration of heavy metals from plastic products was low in alkaline water-soluble fertiliser solutions. After combustion, heavy metal leaching from pipes and mulch residues increased considerably, with the migration capacity of Cd, Cr, and Cu increasing by >10-fold. Heavy metals in plastic pipes migrated primarily to the residue (bottom ash), whereas those from mulch substrate migrated to the fly ash component. Under experimental conditions, the migration of heavy metals from plastic pipes and mulch substrate had a negligible effect on the heavy metal content in aqueous environments. Although heavy metal leaching increased, the effect on water quality under actual irrigation conditions was relatively minor (in the order of 10 −9 ). Thus, the use of plastic irrigation pipes and mulch substrate did not result in significant heavy metal contamination and potential risk to the agriculture ecosystem. Our study findings provide evidence for the effective application and widespread promotion of drip irrigation and fertiliser technology .
研究领域:
农业生态学
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环境科学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xing Long,Yadan Luo,Zhi Luo,Yiyan Wu,Baojie Liu,Chengrong Qin,Chen Liang,Caoxing Huang,Shuangquan Yao
Microplastic contamination of low-density polyethylene mulch and nutrient loss from fertilizers present significant challenges in the crop-growing. In this study, the focus was on creating a biodegradable film that combines the advantages of plastic film, thermal insulation and water retention, as well as the controlled release of fertilizer. A key innovation was the efficient introduction of low molecular weight and low dispersibility of poplar lignin into chitosan and polyvinyl alcohol matrices. The lignin was extracted using deep eutectic solvents of binary carboxylic acids (choline chloride and maleic acid). The refined lignin was used as a superhydrophobic additive to improve the mechanical properties, hydrophobicity, and controlled nutrient release properties of the films through cross-linking. The mulch attained a tensile strength of 37.6 MPa, an elongation of 644.1 %, and a precise release of 53.1 % urea over 30 d at the ideal lignin content ratio (10 %). Furthermore, the film proficiently regulated soil temperature and moisture content. Successful enhancement of cabbage growth was achieved by actual measurements. This discovery provides innovative ideas for the development of nutrient slow-release high-strength integrated agricultural mulching films to promote sustainable, high-quality green agriculture.
研究领域:
农业科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Quanxin Zhang,Pingfan Xu,Nana Yan,Yujing Ren,Xujun Liang,Xuetao Guo
Mulch films allow for efficient crop production, yet their low recovery after use causes severe microplastics (MPs) pollution in agricultural soils. MPs in agricultural environments undergo complex ageing processes, which can alter their interactions with coexisting neonicotinoids and result in unpredictable ecological risks. Here, polyethylene (PE) and polybutylene adipate terephthalate (PBAT), typical mulch films, were chosen for the preparation of PE-MPs and PBAT-MPs. The adsorption of two common neonicotinoids, imidacloprid and dinotefuran, by the two MPs and their joint toxicity were examined. We found that the specific surface area of PBAT-MPs (7.59 m 2 g −1 ) is greater than that of PE-MPs (2.83 m 2 g −1 ), which results in a greater adsorption capacity for neonicotinoids. Additionally, ageing increased the adsorption capacity of MPs for neonicotinoids by 37.50–40.68 % for PBAT-MPs and 44.23–72.34 % for PE-MPs. This enhancement is attributed to the introduction of additional oxygen-containing functional groups on the MPs' surfaces, which can form hydrogen bonds with the amino groups in imidacloprid and dinotefuran. Furthermore, compared to single MPs and neonicotinoids, stronger inhibition in the growth of Escherichia coli and the germination of lettuce seeds was observed when they coexisted. This study highlights the importance of assessing the interactions between MPs and neonicotinoids and their joint toxicity, thereby improving our understanding of the potential risks of MPs towards the agricultural ecosystems.
研究领域:
环境科学
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生态毒理学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Qin Wu,Xin Cai,Meng Sha Ma,Xuan Zhang,Keyin Liu,Nan Nan Xia
The practical applications of grass plastic mulch films are limited because their residues turn into microplastics and enter the food chain. This study solves this problem by preparing a degradable cellulose–lignin–waterborne polyurethane composite grass paper film. First, waterborne polyurethane prepared using a mild method was composited with lignin via an addition reaction and the formation of hydrogen bonding between the –OH groups of lignin and the –NCO and –OH groups of polyurethane. Finally, the as-prepared polyurethane–lignin composite was applied as a coating on the surface of a paper-based material to prepare a grass paper mulch film. The relationship between lignin content and the molecular weight, thermal stability, mechanical properties, polymer network crosslinking density, antioxidant capability, and light transmittance of the coating was studied, revealing that higher lignin contents considerably improved the barrier and mechanical properties of the coating and grass paper mulching film. In particular, a lignin content of 20 % resulted in a grass paper mulching film with outstanding grass pressing performance and degradability. Therefore, the multifunctional, ecofriendly grass paper mulch film prepared from cellulose–lignin–waterborne polyurethane composite materials provides an innovative approach to solve the pollution problem of traditional grass plastic paper mulch.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Cong Jiang,Qiansen Wang,Hong Wang,Yehan Tao,Jie Lu,Gaofeng Pan,Jian Du,Haisong Wang
The eco-friendly cellulosic paper-based mulch film has become an alternative to petroleum-based plastics. However, the integration of black, hydrophobic and high mechanical performances into cellulose mulch film still remained challenge. Herein, multifunctional (P/SLS-Fe/CA) black mulch film with the sandwich structure was designed by layer-by-layer assembly (LBL) strategy using filter paper (P) as the substrate, sodium lignosulfonate chelated with iron (SLS-Fe) as black factor and cellulose acetate (CA) as the hydrophobic layer. The quinone structure formed by the chelation and redox reaction between Fe 3+ and SLS induced the color change from brown-yellow to black of lignin. Moreover, the dynamic reversible physical bonds between P, SLS-Fe and CA endowed the composite with enhanced mechanical performance. The dry and wet tensile strength of the composite were 1.6 times and 21.3 times higher than pristine filter paper, respectively. The water contact angle increased from 58.4º for pure filter paper to 138.7º for the optimized P/SLS-Fe 4 /CA. Furthermore, the prepared black paper-mulch has low water vapor transmittance, heat preservation properties and good water resistance, which promote the growth of cabbage seeds. This work provides a prototype for the design and preparation of black cellulose fiber base membrane, and promotes the green development of agriculture.
研究领域:
材料科学
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农业科学
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环境科学
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DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Jun Ma,Bo Li,Ju Wang,Jiabo Zhang,Haoyu Wang,Wenzhuo Li
Modern agriculture is troubled by white pollution caused by nondegradable polyethylene (PE) mulch film and high transportation costs caused by the large amount of water in liquid mulch film. Aiming at these problems, this study developed a new degradable and water-free powder mulch film (SUPM) with straw powders, urea, and polyvinyl alcohol (PVA) as raw materials. The wind erosion resistance and film-forming properties of SUP powders as SUPM’s precursor were investigated as well as the influence of PVA and urea content on the mechanical properties and water resistance of SUPM film. The results showed that PVA in SUPM film was in a gradient distribution conducive to the germination of crop seedlings. Here, PVA colloids were more distributed at the interface between film and air than at the interface between film and soil. The optimized SUPM film exhibited a biodegradation rate of 90.5 % over 100 d. After SUPM film degradation, soil carbon and nitrogen contents were 33.5 and 58.8 % higher, respectively, than in bare soil. In two consecutive planting experiments, pakchoi yields were higher and more stable in the soil with SUPM than in bare soil and soil with PE. Compared to other reported biodegradable mulch films, SUPM demonstrated advantages in ease of use, enhancement of soil carbon and nitrogen content, and stable crop yields. This study provided a new approach for the large-scale utilization of straw waste, mitigating environmental issues caused by traditional PE mulch, and promoting the development of environment-friendly modern agriculture.
研究领域:
农业科学
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环境科学
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产品关联
DOI
高影响因子
ACS Omega
·
2021
·
IF 3.512
Ke Wang,Xiaoyan Sun,Bibo Long,Fayong Li,Chong Yang,Junjia Chen,Chunping Ma,Dong Xie,Yen Wei
Biodegradable mulch films are supposed to be a prospective substitute for poly(ethylene)-based mulch films in the field of sustainable agriculture. Among them, weeding mulch films play significant roles. However, the large-scale production of weeding mulch films through the traditional high-temperature film blowing process would often cause serious pollution due to the diffusion of herbicides in the surroundings. Herein, a green and facile coating approach is developed to produce biodegradable weeding mulch films. In our strategy, a herbicide was added into a poly(vinyl alcohol) aqueous solution with dopamine in it. After the subsequent low-temperature coating procedure on a biodegradable poly(butylene adipate-co-terephthalate)/poly(lactic acid) film, effective weeding mulch films were obtained. The morphology, structure, and mechanical property test results revealed the robustness and stability of the coating, and the pot experiments clearly demonstrated the effective weed suppression ability of the obtained weeding films. Evidently, this strategy to produce biodegradable weeding mulch films is green and facile, exhibiting great prospects in the large-scale production of weeding mulch films and other functional biodegradable mulch films.
研究领域:
农业科学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
WATER AIR AND SOIL POLLUTION
·
2023
·Vol. 234
·期 11
·1-15
·
IF 2.9
Wang Xiangbing,Li Xiaoxia,Sang Wutang,Peng Hui,Ma Guofu
A novel eco-friendly polyvinyl alcohol-straw biodegradable agricultural film is prepared by simple film coating methods to address the poor degradation problems of residual films and the environmental pollution caused by traditional non-degradable agricultural films. Hydrothermally activated wheat straw was added to polyvinyl alcohol (PVA) solution as a reinforcing material. The morphological, structural, mechanical properties, water resistance, and degradability are carefully investigated in this study. The results show that the composite film has 34.1% higher water resistance, 10.8 ~ 15.4 MPa fracture stress, and 115 ~ 304% fracture strain. It also has appropriate wettability, high thermal stability, water resistance, light transmission, and excellent degradability. The prepared films are inexpensive and eco-friendly. They can be produced on a large scale and applied in biodegradable films.
研究领域:
农业科学
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材料科学
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环境科学
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
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IF 9.224
Weiyi Su,Zhiwei Yang,Haoyang Wang,Jing Fang,Chunli Li,Gaojin Lyu,Hao Li
Replacing petrochemical polymers with biomaterials for biodegradable mulch applications has attracted widespread attention. However, improving film performance and reducing costs remain an issue. In this work, we found that the synergistic effect of sodium alginate and quaternary lignin significantly improved the performance and reduced the cost of poly(vinyl alcohol) films. The water retention, ultraviolet (UV) resistance, heat collection, light transmission, mechanical properties, soil consolidation, and the degradation rates of the composite films were systematically studied. We found that the addition of lignin enabled the film to achieve complete UV resistance, while the sodium alginate synergistically improved the mechanical and water-holding properties of the film. The film improved soil slumping, and the water vapor permeability of the film was 109.2 g·m–2·day–1. The degradation of the film was facilitated by the self-degradation properties of sodium alginate and lignin, which degraded 55% after 50 days.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Zhengang Xie,Qiuyu Xiong,Yun Fang,Qi Zhang,Wenlong Liang,Jingli Cheng,Wenxuan Shang,Wei Zhao,Jinhao Zhao
Soil-borne diseases have caused substantial economic losses to agricultural production due to their rapid onset and few means of control. Here, pyraclostrobin (Pyr) microcapsules (Pyr@MCC) with temperature-responsive pesticide release capability were prepared using temperature-sensitive phase-change materials as capsule cores. Then, the Pyr@MCC was organically combined with poly(vinyl alcohol)-starch film (PVA/ST) to prepare a composite mulch film (PM/PVA/ST) with intelligent control of pesticide release rate according to external temperature change, which realized sustainable and efficient control of Phytophthora root rot (PRR) on soybean. Tensile tests showed that the PM/PVA/ST film exhibited good tensile deformation ability (134.9%) and high tensile stress (18.0 Mpa). The water vapor transmission rate test showed that the PM/PVA/ST film exhibited good barrier performance to H2O, CO2, and O2. The release test data proved that the PM/PVA/ST film could slowly release Pyr at lower temperatures (15 °C) and release Pyr rapidly at higher temperatures (35 °C), corresponding to the high temperature at which the Phytophthora root rot outbreak. In vitro antifungal and pot experiments showed that the PM/PVA/ST film had a good control efficiency on Fusarium spp. These results show that the functional pesticide microcapsules loaded onto the film have good application potential for controlling PRR on soybean. In general, this composite mulch film provided some innovative research ideas for optimizing the pesticide delivery pathway and thereby efficiently controlling soil-borne pests and diseases, reducing the frequency and amount of pesticide use and minimizing white pollution from traditional plastic mulch films.
研究领域:
农业科学
·
植物病理学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）