Sustainable Materials and Technologies最新文献_第4页

Optimization, pilot scale production and techno-economic assessment of nano fibrillation strategies of cellulose from γ-valerolactone delignified sweet potato vines γ-戊内酯脱木质素甘薯藤纤维纳米纤化工艺优化、中试生产及技术经济评价

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-01-20 DOI: 10.1016/j.susmat.2026.e01882

Yuan Li , Hongnan Sun , Taihua Mu , Marco Garcia-Vaquero

This study aims to optimize, scale-up and assess the economic feasibility of mechanical nanofibrillation strategies (high-pressure homogenization and ball milling) to generate high-quality cellulose nanofibers (CNFs) from delignified sweet potato vines biomass, utilizing γ-valerolactone/water (GVL/H₂O), while comprehensively analyzing the physicochemical, structural characteristics and appearance morphology of CNFs. Sequential parametric optimization allowed to determine optimum high-pressure homogenization (40 MPa, 4 cycles) and ball milling (60 Hz, 100 min) processing conditions. CNF by high-pressure homogenization achieved yields of 22.60 %, zeta potential of −27.23 mV, and average diameter of 23.66 nm; while ball milling yielded 19.74 % of CNF with zeta potential of −25.83 mV, and average diameter of 22.25 nm. The scale-up of high-pressure homogenization conditions at pilot scale generated yields of 21.90 % CNFs with consistent nanofibril morphology (19.81 nm average diameter). Moreover, comprehensive characterization revealed all CNFs exhibited superior thermal stability (>314 °C), enhanced crystallinity, and improved hydrophilicity compared to commercial CNFs. Techno-economic analysis of the pilot scale method under 2 different scenarios, recovering lignin and solvent or not. This analysis confirmed higher long-term profitability of the scenario recovering the compounds, despite the relatively higher initial investment, with a higher net present value ($485.82 million) and return on investment (57.24 %). Through the implementation of recyclable solvent-based biomass pretreatment, optimization of biorefining processes, pilot-scale validation, and techno-economic analysis, this study establishes a comprehensive green and sustainable biorefinery model for effectively converting agricultural waste into high-value nanomaterials, providing an economically feasible model for large-scale production of CNFs.

本研究旨在优化、扩大和评估机械纳米纤化策略（高压均质和球磨）的经济可行性，利用γ-戊内酯/水（GVL/H2O）从去木质素的甘薯藤生物量中生产高质量的纤维素纳米纤维（CNFs），同时综合分析CNFs的物理化学、结构特征和外观形态。顺序参数优化可以确定最佳的高压均质（40 MPa， 4次循环）和球磨（60 Hz， 100分钟）加工条件。高压均匀化CNF产率为22.60%，zeta电位为- 27.23 mV，平均直径为23.66 nm；而球磨的CNF收率为19.74%，zeta电位为- 25.83 mV，平均直径为22.25 nm。在中试规模的高压均质条件下，产量为21.90%，纳米纤维形态一致（平均直径19.81 nm）。此外，综合表征表明，与商业CNFs相比，所有CNFs具有优越的热稳定性（>314°C），结晶度增强，亲水性改善。中试方法在回收和不回收木质素和溶剂两种不同情况下的技术经济分析。该分析证实，尽管初始投资相对较高，但回收这些化合物的方案具有较高的长期盈利能力，净现值（4.8582亿美元）和投资回报率（57.24%）较高。本研究通过实施可循环溶剂基生物质预处理、优化生物精炼工艺、中试验证和技术经济分析，建立了一个全面的绿色可持续的生物精炼模型，有效地将农业废弃物转化为高价值纳米材料，为大规模生产CNFs提供了经济可行的模型。

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引用次数: 0

Relative life cycle assessment of mortar mixes incorporating industrial by-products flue gas desulfurization gypsum and fly ash via cradle-to-gate approach 工业副产物、烟气、脱硫、石膏和粉煤灰混合砂浆的相对生命周期评价

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-01-20 DOI: 10.1016/j.susmat.2026.e01870

Payal Bakshi , Soumitra Maiti , Aakriti , Neeraj Jain

A relative life cycle assessment (LCA) is conducted for mortar mixes formulated by including flue gas desulfurization (FGD) gypsum, fly ash and ordinary Portland cement (OPC) as binding agents using cradle-to-gate approach by scaling up laboratory size life cycle inventory. Construction is a crucial sector for the sustainable development of Asian countries, as it is increasingly required to transition towards the use of novel ecological mortars. The construction industry is characterised by a significant use of energy and the manufacturing of cement is a major contributor to global environmental pollution. By-products generated by coal fired power plants show potential as a sustainable substitute for cement in mortar. LCA is utilised to measure the potential environmental effects on various indicators including acidification, climate change-global warming potential, ecotoxicity (freshwater, marine, terrestrial), energy resources: non-renewable-abiotic depletion potential: fossil fuels, eutrophication, human toxicity, material resources: metals/minerals-abiotic depletion potential: elements (ultimate reserves), ozone layer depletion and photochemical oxidation of developed mortars. FGD gypsum-Fly ash-Cement (FFC) mortar performs better than Cement mortar (C) in all evaluated environmental impacts. Relative LCA study of sustainable FFC and C mortar mix production was performed using the ecoinvent - CML v4.8 2016 method. Global warming potential of the developed FFC mortar is found to be −3.75972e-1Kg CO₂-Eq. Primary areas of concern are the transportation infrastructure and the usage of fossil fuels in the production of FGD gypsum, fly ash and cement. Substituting natural gas for non-renewable mineral coke will result in a decrease in the overall environmental impacts. Based on the conducted LCA, it has been determined that all the environmental indicators of FFC mortar are considerably lower than those of cement mortar with similar strength. Utilising sustainable FFC mortar will substantially decrease the extraction of non-renewable resources, resulting in a decrease in environmental impacts.

通过扩大实验室规模的生命周期清单，采用从摇篮到大门的方法，对包括烟气脱硫（FGD）石膏、粉煤灰和普通波特兰水泥（OPC）作为粘结剂的砂浆混合物进行了相对生命周期评估（LCA）。建筑是亚洲国家可持续发展的一个关键部门，因为它越来越需要过渡到使用新型生态砂浆。建筑工业的特点是大量使用能源，而水泥的制造是造成全球环境污染的主要因素。燃煤电厂产生的副产品显示出作为砂浆中水泥的可持续替代品的潜力。LCA用于测量对各种指标的潜在环境影响，包括酸化，气候变化-全球变暖潜势，生态毒性（淡水，海洋，陆地），能源：不可再生-非生物枯竭潜势：化石燃料，富营养化，人类毒性，物质资源：金属/矿物-非生物枯竭潜势：元素（最终储量），臭氧层消耗和发达砂浆的光化学氧化。烟气脱硫石膏-粉煤灰-水泥砂浆（FFC）在各项环境影响评价中均优于水泥砂浆(C)。使用ecoinvent - CML v4.8 2016方法进行可持续FFC和C砂浆混合生产的相关LCA研究。开发的FFC砂浆的全球变暖潜势为−3.75972e-1Kg CO2-Eq。主要关注的领域是运输基础设施和在生产烟气脱硫石膏、粉煤灰和水泥时使用化石燃料。用天然气替代不可再生的矿物焦炭将减少对整体环境的影响。通过进行LCA，确定FFC砂浆的各项环境指标均明显低于同等强度的水泥砂浆。使用可持续的FFC砂浆将大大减少对不可再生资源的开采，从而减少对环境的影响。

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引用次数: 0

Synergistic mechanical and chemical activation of kaolin clays for enhanced reactivity in limestone calcined clay cement (LC3) 高岭土的机械化学协同活化提高石灰石煅烧粘土水泥（LC3）的反应性

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-01-19 DOI: 10.1016/j.susmat.2026.e01876

Khuram Rashid , Nosheen Blouch , Miral Fatima , Mingzhong Zhang

Limestone calcined clay cement (LC³) produced from high-grade clays calcined at optimum temperatures demonstrates superior performance, while the utilisation of low-grade clays remains limited due to their reduced reactivity. To tackle this limitation, this study introduces an innovative multi-activation strategy that integrates calcination with simultaneous mechanical or chemical activation. Two clays with distinct kaolinite contents were subjected to this hybrid activation process, which were characterised using X-ray fluorescence (XRF), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and modified Chapelle and R³ tests. Subsequently, two grades of LC³ mortar were prepared from the activated clays, and their hydration kinetics and strength development were evaluated up to 90 d. Results indicated that thermomechanical activation significantly enhanced the pozzolanic reactivity of both clays, leading to higher heat release and strength development, particularly for LG-based LC³. Specifically, it showed a 35.5% increase in strength at 28-days compared to 7-day strength, while HG-based LC³ exhibited a 46.5% increase. In contrast, thermochemical activation resulted in the formation of zeolitic phases that adversely affected reactivity, and thus there was reduction in bound water content and Ca(OH)₂ consumption for both clays, 15.3% and 17.9%, respectively as compared to thermal activation. Overall, thermomechanical activation demonstrated superior potential for improving the performance of low-grade clays, Finally, correlation matrices were established to link clay reactivity with strength development. Furthermore, a schematic model illustrating reactivity mechanisms under different activation strategies was proposed and verified through XRD and TGA analyses.

石灰石煅烧粘土水泥（LC3）由优质粘土在最佳温度下煅烧而成，表现出优异的性能，而低等级粘土的利用由于其反应性降低而受到限制。为了解决这一限制，本研究引入了一种创新的多激活策略，将煅烧与同时进行的机械或化学激活相结合。采用x射线荧光（XRF）、x射线衍射（XRD）、热重分析（TGA）以及改进的Chapelle和R3试验对两种高岭石含量不同的粘土进行了杂化活化。随后，用活性粘土制备了两种等级的LC3砂浆，并对其水化动力学和强度发展进行了长达90 d的评估。结果表明，热机械活化显著增强了两种粘土的火山灰反应性，导致更高的热量释放和强度发展，特别是lg3基LC3。具体来说，它在28天的强度比7天的强度增加了35.5%，而基于hg的LC3则增加了46.5%。相比之下，热化学活化导致沸石相的形成，对反应性产生不利影响，因此，与热活化相比，两种粘土的束缚水含量和Ca(OH)2消耗分别降低了15.3%和17.9%。总体而言，热机械活化在改善低品位粘土的性能方面表现出了卓越的潜力。最后，建立了粘土反应性与强度发展之间的关联矩阵。建立了不同活化策略下反应机理的示意图模型，并通过XRD和TGA分析进行了验证。

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引用次数: 0

A hydrophobic and high-toughness elastomer-modified bio-based film-coated controlled-release fertilizer 一种疏水高韧性弹性体改性生物基膜包覆控释肥料

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-01-19 DOI: 10.1016/j.susmat.2026.e01877

Denglun Chen , Lulu Cao , Meiqi Han , Junyin Li , Zhaohui Tong , Chunyan Tang , Yuechao Yang , Shugang Zhang

The development of bio-based controlled-release coating materials for controlled-release fertilizers has become a key research focus in sustainable agriculture, driven by their renewability, cost-effectiveness, and environmental benefits in contrast to conventional petrochemical counterparts, which are often non-renewable, expensive, and slow to degrade. However, bio-based materials utilized for controlled-release coatings, such as vegetable oil and lignin, usually contain hydrophilic groups, which lead to poor hydrophobicity. Furthermore, the coating shell has poor toughness and is prone to rupture. These deficiencies ultimately result in suboptimal nutrient release synchronization with crop growth cycles. In this study, a hydrophobic and high-toughness bio-based polymer coating was prepared by combining an elastomer as a modifier with the bio-based film materials. The bio-based polymer coating modified with 20% elastomer (derived from pentaethylene glycol, castor oil, and isophorone diisocyanate) exhibits high cross-linking density (high gel content), which significantly enhances the coating's mechanical properties and barrier function, thereby successfully mitigating the limitations on its release performance. Specifically, the ultimate tensile strength increases from 1.87 MPa to 14.09 MPa, the elongation at break increases from 6.06% to 15.22%, the water contact angle rises from 111.86° to 126.09°, and the controlled-release period extends from 98 days to 140 days. This study presents a new approach for incorporating the elastomer to enhance bio-based controlled-release fertilizer coating materials. In the long run, this approach is expected to offer technical insights for facilitating resource utilization and the development of sustainable agriculture.

生物基控释肥料涂层材料具有可再生性、成本效益和环境效益，而传统的石化材料往往是不可再生的、昂贵的、降解缓慢的，因此开发生物基控释涂层材料已成为可持续农业的一个重要研究热点。然而，用于控释涂层的生物基材料，如植物油和木质素，通常含有亲水性基团，导致疏水性差。此外，涂层外壳韧性差，容易破裂。这些缺陷最终导致养分释放与作物生长周期同步不理想。在本研究中，将弹性体作为改性剂与生物基薄膜材料结合，制备了疏水、高韧性的生物基聚合物涂层。用20%弹性体（源自五乙二醇、蓖麻油和异佛尔酮二异氰酸酯）改性的生物基聚合物涂层具有高交联密度（高凝胶含量），显著提高了涂层的机械性能和屏障功能，从而成功地减轻了其释放性能的限制。其中，极限抗拉强度从1.87 MPa增加到14.09 MPa，断裂伸长率从6.06%增加到15.22%，水接触角从111.86°增加到126.09°，控制释放期从98天延长到140天。本研究提出了一种加入弹性体增强生物基控释肥料包衣材料的新方法。从长远来看，这种方法有望为促进资源利用和可持续农业的发展提供技术见解。

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引用次数: 0

Development of sustainable fibre-reinforced self-compacting geopolymer concrete with enhanced resistance to chemical attacks and shrinkage 具有增强抗化学侵蚀和收缩性能的可持续纤维增强自密实地聚合物混凝土的开发

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-01-17 DOI: 10.1016/j.susmat.2026.e01874

Mahdi Heshmati, M. Neaz Sheikh, Muhammad N.S. Hadi

In the pursuit of sustainable construction materials, the development of self-compacting geopolymer concrete (SCGC) has emerged as a promising alternative to conventional cement-based concrete. However, its brittle behaviour, susceptibility to cracking, and need for elevated-temperature curing limit the structural applications of SCGC, particularly in aggressive environments. This study developed high-strength fibre-reinforced SCGC (FRSCGC) as a novel material, cured at ambient conditions to improve ductility, chemical resistance, and drying shrinkage. Stainless steel fibres with high tensile strength were used to develop FRSCGC. The durability of SCGC and FRSCGC was evaluated through sulphate and acid resistance tests, rapid chloride permeability test (RCPT), and drying shrinkage measurements. Experimental results showed a significant improvement in the resistance of SCGC to sulphate, acid, and chloride ion penetration with the addition of stainless steel fibres. Compared to SCGC, drying shrinkage of FRSCGC was reduced from 2360 μɛ to 1420 μɛ, indicating superior dimensional stability. Microstructural analysis revealed that the crack-bridging mechanism of stainless steel fibres enhanced the interfacial transition zone and mitigated the progression of chemical-induced damage, which improved the mechanical and durability properties of FRSCGC under aggressive environments. The findings of this study highlight the potential of FRSCGC as a sustainable and durable construction material for building infrastructure in aggressive environments.

在追求可持续建筑材料的过程中，自密实地聚合物混凝土（SCGC）的发展已经成为传统水泥基混凝土的一种有前途的替代品。然而，SCGC的脆性、易开裂和高温固化限制了其在结构上的应用，特别是在腐蚀性环境中。本研究开发了高强度纤维增强SCGC （FRSCGC）作为一种新型材料，在环境条件下固化，以提高延展性，耐化学性和干燥收缩率。采用高抗拉强度的不锈钢纤维制备FRSCGC。通过硫酸盐和耐酸性测试、快速氯化物渗透性测试（RCPT）和干燥收缩率测试来评估SCGC和FRSCGC的耐久性。实验结果表明，不锈钢纤维的加入显著提高了SCGC的抗硫酸盐、酸和氯离子渗透性能。与SCGC相比，FRSCGC的干燥收缩率从2360 μ /降至1420 μ /，具有较好的尺寸稳定性。显微组织分析表明，不锈钢纤维的裂纹桥接机制增强了界面过渡区，减缓了化学损伤的发展，提高了FRSCGC在恶劣环境下的力学性能和耐久性。这项研究的结果强调了FRSCGC作为一种可持续和耐用的建筑材料在恶劣环境下建造基础设施的潜力。

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引用次数: 0

Recoverable porous inorganics/hydrogel composite microbeads achieve ultra-efficient synergistic removal of heavy metal ions and anions: Simple recovery and regeneration 可回收多孔无机物/水凝胶复合微珠实现超高效协同去除重金属离子和阴离子：简单的回收再生

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-01-17 DOI: 10.1016/j.susmat.2026.e01873

Rui-Dong Wang , Lei Wang , Zhao-Ting Yang , Zhi-Peng Wang , Wei-Ming Wei , Hua Liu , Wen-Qian Zhang , Lin Du , Qi-Hua Zhao

Synergistically removing heavy metal ions and the coexisting anions is the most optimal strategy for protecting water resources. In this work, the multi-porous coral-like material (IM-3) with high efficiency and synergic removal of heavy metal ions (Hg(II) (1420 mg/g), Pb(II) (623 mg/g) and Cd(II) (203 mg/g)) and anions (Cl⁻ and NO₃⁻) in water had been obtained by using MOF as a template through functionalization. At room temperature (298 K), IM-3 could maintain extremely high removal efficiency in a wide range of acidic environments or at low concentrations (less than 50 mg/L). The important role of MOFs functionalization in collaborative removal was confirmed by experimental tests. DFT calculation analyzed the process of functionalization and proved that functionalization made a significant contribution to the removal of inorganic pollutant. In addition, more recyclable (magnetic) hydrogel composite microbeads (IM@SA) were prepared, which solved the problem of high cost of MOFs recovery and may cause secondary pollution. IM@SA continuously operated in the flow system for 48 h, yet still maintained a removal rate of 99.5%. This work obtained a highly efficient inorganic adsorptive material for water treatment, which realized the synergistic adsorption of cation and anion, realized sustainable application of MOFs in the environmental field, and enhanced the competitiveness of MOFs in applications.

协同去除重金属离子和共存阴离子是保护水资源的最优策略。本研究以MOF为模板，通过功能化，获得了高效协同去除水中重金属离子(Hg(II) （1420 mg/g）、Pb(II) （623 mg/g）和Cd（II) (203 mg/g)）和阴离子（Cl−和NO3−）的多孔类珊瑚材料（im3）。在室温（298 K）下，IM-3在较宽的酸性环境或较低的浓度（低于50 mg/L）下都能保持极高的去除率。实验验证了mof功能化在协同去除中的重要作用。DFT计算分析了功能化过程，证明了功能化对无机污染物的去除有重要贡献。此外，制备了更具可回收性的（磁性）水凝胶复合微珠（IM@SA），解决了mof回收成本高、可能造成二次污染的问题。IM@SA在流动系统中连续运行48 h，仍然保持99.5%的去除率。本工作获得了一种高效的水处理无机吸附材料，实现了阳离子和阴离子的协同吸附，实现了mof在环境领域的可持续应用，增强了mof在应用领域的竞争力。

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引用次数: 0

Sustainable lithium recovery from hot springs: A multidisciplinary approach 从温泉中可持续回收锂：一种多学科方法

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-01-15 DOI: 10.1016/j.susmat.2026.e01871

Giuseppe Di Sotto , Francesco Bianco , Matteo Fiorucci , Marco Race , Michele Saroli

As technology and development advance, global demand for lithium is expected to grow exponentially yearly, hence the need to explore new natural resources to supply the rapid demand. As a leading water resource, lithium is extracted from brines, including salt lakes, geothermal, and oilfield brines. Addressing the lack of studies on new exploitable water resources for lithium extraction, this review presents hot springs as a novel secondary resource for lithium by exploring geological and engineering aspects. The geological section provides information on the genesis of hot springs, mineral structures containing lithium, and the main mechanisms of lithium enrichment in water resources related to water-rock interactions. On the other hand, traditional (i.e., evaporation and chemical precipitation) and advanced lithium extraction engineering techniques, such as direct lithium extraction techniques (e.g., ion exchange, adsorption, solvent extraction, and membrane-based techniques), are here proposed and investigated for hot springs. The review outlines the mechanisms, parameters, and efficiencies associated with the various extraction techniques, highlighting their negative environmental impact and sustainability aspects. Finally, critical aspects and future perspectives are discussed here.

随着技术和发展的进步，全球对锂的需求预计将呈指数级增长，因此需要探索新的自然资源来满足快速的需求。锂是一种主要的水资源，从盐水中提取，包括盐湖、地热和油田盐水。针对近年来国内外对锂资源开发研究不足的问题，从地质和工程两个方面阐述了温泉作为锂资源的一种新的二次资源。地质部分提供了温泉的成因、含锂矿物结构以及与水岩相互作用有关的水资源中锂富集的主要机制的信息。另一方面，传统的（如蒸发和化学沉淀）和先进的锂提取工程技术，如直接锂提取技术（如离子交换、吸附、溶剂提取和膜基技术），在这里被提出和研究。该审查概述了与各种提取技术有关的机制、参数和效率，强调了它们对环境的负面影响和可持续性方面。最后，讨论了关键方面和未来的前景。

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引用次数: 0

Bio-composite Panels from upcycling cigarette butts: Acoustic and thermal characterization 由升级回收的烟头制成的生物复合材料板：声学和热特性

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-01-15 DOI: 10.1016/j.susmat.2026.e01867

Aida Ardani , Parham Soltani , Ebrahim Taban , Valeria Selicati , Umberto Berardi

Cigarette butts (CBs), composed of non-biodegradable cellulose acetate fibers, represent one of the most pervasive and persistent forms of urban litter, creating critical environmental and waste management challenges worldwide. This study proposes a material valorization strategy that transforms discarded CBs into multifunctional panels for thermal and acoustic building insulation. After chemical cleaning and treatment, CB-derived fibers were mixed with a natural binder to fabricate bio-composite panels. A response surface methodology (RSM) based on central composite design (CCD) was applied to optimize two key fabrication variables, thickness and bulk density, with respect to acoustic and thermal performance. The optimized panels achieved a sound absorption average (SAA) of 0.55 at only 25 mm thickness and thermal conductivity of 0.038 W/m·K, outperforming several conventional commercial benchmark materials. Flexural testing confirmed adequate mechanical integrity for non-structural applications. In addition to demonstrating technical feasibility, this work validates the predictive accuracy of RSM-CCD as an optimization tool for CB-derived composites. Comparative analysis and a preliminary cost estimate highlight the economic viability of the panels. By converting hazardous waste into scalable building products, this study addresses the interconnected challenges of pollution reduction, energy efficiency, and the circular economy in the building sector. While comprehensive life cycle assessment (LCA), fire safety testing, and long-term durability remain future steps, the findings establish CB-based panels as a promising pathway toward recycled building materials.

烟头由不可生物降解的醋酸纤维素纤维组成，是最普遍和最持久的城市垃圾之一，在全球范围内造成了严重的环境和废物管理挑战。本研究提出了一种材料增值策略，将废弃的cb转化为用于隔热和隔音建筑的多功能面板。经过化学清洗和处理后，cb衍生纤维与天然粘合剂混合制成生物复合材料板。采用基于中心复合设计（CCD）的响应面法（RSM）优化了两个关键的制造变量，厚度和体积密度，以及声学和热性能。优化后的面板在厚度仅为25 mm时的平均吸声（SAA）为0.55，导热系数为0.038 W/m·K，优于几种传统的商业基准材料。弯曲试验证实非结构应用具有足够的机械完整性。除了证明技术可行性之外，这项工作还验证了RSM-CCD作为cb衍生复合材料优化工具的预测准确性。比较分析和初步成本估计强调了太阳能电池板的经济可行性。通过将危险废物转化为可扩展的建筑产品，本研究解决了建筑行业中污染减少、能源效率和循环经济等相互关联的挑战。虽然全面的生命周期评估（LCA）、消防安全测试和长期耐久性仍是未来的步骤，但研究结果表明，基于cb的面板是回收建筑材料的有希望的途径。

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引用次数: 0

Tailoring biodegradable copolyesters from bis(2-hydroxyethyl) terephthalate and aliphatic dicarboxylic acids: Toward sustainable packaging materials 从双（2-羟乙基）对苯二甲酸酯和脂肪族二羧酸中裁剪可生物降解的共聚聚酯：走向可持续包装材料

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-01-13 DOI: 10.1016/j.susmat.2026.e01868

Hojun Shin , Gawon Pak , Shinhyeong Choe , Hoseong Moon , Jaewook Myung , Heejong Yu , Woojun Choi , Jongchul Seo

The increasing accumulation of plastic waste and the limited efficiency of mechanical recycling highlight the need for sustainable polymer systems that combine chemical recyclability and biodegradability. Bis(2-hydroxyethyl) terephthalate (BHET), a monomer recovered from depolymerized polyethylene terephthalate (PET), is an attractive platform for creating new recyclable and compostable materials. However, insufficient understanding of the structure–property–degradation relationships of BHET-derived copolyesters hinders their rational design for packaging applications. In this study, a series of BHET–aliphatic acid copolyesters was synthesized via melt polycondensation using aliphatic dicarboxylic acids with varying chain lengths to investigate the influence of the molecular architecture on the material performance and end-of-life behavior. Increasing the aliphatic chain length reduced the crystallinity and thermal transition temperatures, resulting in enhanced flexibility and optical transparency but reduced tensile strength and gas-barrier efficiency. Under industrial composting conditions, longer-chain copolyesters degraded more rapidly, transitioning from surface-limited erosion to bulk erosion driven by hydrolysis-induced ester bond cleavage. Compared with commercial poly(butylene adipate-co-terephthalate) (PBAT), the BHET–aliphatic series exhibited superior optical clarity and higher recycled carbon content, underscoring their potential as next-generation sustainable packaging materials that unify performance and circular sustainability metrics. These findings offer practical guidance for the development of biodegradable aromatic–aliphatic copolymers for sustainable packaging applications, aligned with the relationship among molecular structure, material properties, and biodegradation.

塑料废物的不断积累和机械回收的有限效率突出了对结合化学可回收性和生物可降解性的可持续聚合物系统的需求。双（2-羟乙基）对苯二甲酸乙二醇酯（BHET）是一种从聚对苯二甲酸乙二醇酯（PET）解聚中回收的单体，是创造新的可回收和可堆肥材料的有吸引力的平台。然而，对bht衍生共聚聚酯的结构-性能-降解关系的理解不足，阻碍了它们在包装应用中的合理设计。本研究以不同链长的脂肪族二羧酸为原料，通过熔融缩聚法制备了一系列bhet -脂肪酸共聚酯，研究了分子结构对材料性能和寿命终止行为的影响。增加脂肪链长度降低了结晶度和热转变温度，从而提高了柔韧性和光学透明度，但降低了拉伸强度和气体阻隔效率。在工业堆肥条件下，长链共聚酯降解速度更快，从表面有限的侵蚀转变为由水解诱导的酯键裂解驱动的整体侵蚀。与商业聚苯二甲酸丁二酯（PBAT）相比，bhet -脂肪系列具有优越的光学清晰度和更高的再生碳含量，强调了它们作为下一代可持续包装材料的潜力，统一了性能和循环可持续性指标。这些发现为可持续包装应用的可生物降解芳烃-脂肪族共聚物的开发提供了实际指导，与分子结构，材料性能和生物降解之间的关系一致。

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引用次数: 0

Vegetable oil-based non-isocyanate polyurethane sizing agent: Constructing a “rigid-flexible” green interface for carbon fiber/epoxy composites 植物油基非异氰酸酯聚氨酯施胶剂：为碳纤维/环氧复合材料构建“刚柔”绿色界面

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-01-12 DOI: 10.1016/j.susmat.2026.e01866

Hao Liu , Weifeng Du , Hongjun Wang , Chunhong Zhang , Junbo Zang , Lu Wang , Lei Shang , Yuhui Ao

Polyurethane sizing agents are widely applied in solving interface issues in carbon fiber composites. Influenced by the concept of sustainable development, the scientific community has been seeking a non-isocyanate green synthesis route for polyurethane to replace traditional petroleum-based polyurethane for decades. This article uses epoxidized soybean oil and CO₂ to prepare carbonated epoxidized soybean oil, and synthesizes a non-isocyanate polyurethane through five-membered cyclic carbonate aminolysis for the development of a green and efficient water-based non isocyanate polyurethane (BNIPU) sizing agent for constructing the “rigid-flexible” green interface of composites. The use of isocyanates in synthesis has been eliminated, achieving environmental friendliness and high efficiency. BNIPU sizing agent efficiently improves the interfacial properties of CF/EP composite materials. After evaluation, the IFSS and ILSS of the modified CF₂₀/EP composite reached 127.69 MPa and 96.22 MPa, respectively. Compared to the composite material without sizing, the improvement was 125.28% and 80.05%, respectively. This paper provides a new approach for a novel green synthesis route for polyurethane and suggests the possibility of partially replacing traditional polyurethane.

聚氨酯施胶剂广泛应用于解决碳纤维复合材料的界面问题。受可持续发展理念的影响，几十年来科学界一直在寻求聚氨酯的非异氰酸酯绿色合成路线，以取代传统的石油基聚氨酯。本文以环氧大豆油和CO2制备碳酸化环氧大豆油，并通过五元环碳酸酯氨解合成非异氰酸酯聚氨酯，开发绿色高效的水基非异氰酸酯聚氨酯（BNIPU）施胶剂，构建复合材料的“刚柔”绿色界面。在合成过程中不再使用异氰酸酯，实现了环保和高效。BNIPU施胶剂能有效改善CF/EP复合材料的界面性能。经评价，改性CF20/EP复合材料的IFSS和ILSS分别达到127.69 MPa和96.22 MPa。与未施胶的复合材料相比，分别提高了125.28%和80.05%。本文为新型绿色聚氨酯合成路线提供了一条新途径，并提出了部分替代传统聚氨酯的可能性。

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引用次数: 0