Reactive & Functional Polymers最新文献

Effect of antioxidant structure on bromobutyl rubber composites' processability and age resistance 抗氧化剂结构对溴化丁基橡胶复合材料加工性和耐老化性的影响

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-10-28 DOI: 10.1016/j.reactfunctpolym.2024.106082

{"title":"Effect of antioxidant structure on bromobutyl rubber composites' processability and age resistance","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106082","DOIUrl":"10.1016/j.reactfunctpolym.2024.106082","url":null,"abstract":"<div><div>Bromobutyl rubber has numerous applications in industries such as tires, sealing capsules, and aerospace, so enhancing its aging resistance is a critical issue. However, the addition of amine antioxidants to Bromobutyl rubber results in the occurrence of unique storage hardening and storage scorching phenomenon, which lead to the deterioration of the rubber's properties. To examine the impact of various types of amine antioxidants on the storage stability and aging resistance of Bromobutyl rubber, we conducted comparative experiments using five types of amine antioxidants and one phenolic antioxidant. The purpose was to investigate the effect of amine antioxidants on the storage stability and overall performance of Bromobutyl rubber. The results indicate that the inclusion of <em>p</em>-phenylenediamine antioxidants (4020, 4010NA) greatly facilitates the occurrence of storage hardening and storage scorching phenomenon in Bromobutyl rubber, leading to a deterioration in rubber performance. Therefore, it is advisable to refrain from using high-activity <em>p</em>-phenylenediamine antioxidants when working with Bromobutyl rubber.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and performance study of N-LAC/MoS2/PVDF ion exchange membrane in microbial desalination cells 微生物脱盐电池中 N-LAC/MoS2/PVDF 离子交换膜的制备和性能研究

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-10-28 DOI: 10.1016/j.reactfunctpolym.2024.106075

{"title":"Preparation and performance study of N-LAC/MoS2/PVDF ion exchange membrane in microbial desalination cells","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106075","DOIUrl":"10.1016/j.reactfunctpolym.2024.106075","url":null,"abstract":"<div><div>Ion exchange membranes play a crucial role in the study of microbial desalination cells (MDC). This study introduces a novel N-LAC/MoS<sub>2</sub>/PVDF ion exchange membrane prepared via chemical grafting, emphasizing its role in enhancing MDC efficiency. The research thoroughly assesses the membrane's microstructure, infrared spectroscopy, and water flux, revealing how the composite additives enhance hydrophilicity, alter contact angles, and improve pore structure. The incorporation of hydrophilic groups like hydroxyl, carboxyl, and carbonyl groups into the membrane significantly improves its hydrophilicity. The optimal performance is achieved with 1 wt% N-LAC/MoS<sub>2</sub>, increasing porosity to 86.94 % (a 25.5 % increase from pure PVDF) and reducing the contact angle to 71.59° (a 14.12 % decrease from pure PVDF). It also achieves an 84.1 % desalination efficiency under set conditions. The membrane shows high removal efficiency for methylene blue (MB) and Pb<sup>2+</sup>, reaching up to 93–96 % for MB and 91–94 % for Pb<sup>2+</sup> under different pH, concentration, temperature, and salinity conditions. Its reusability is also notably enhanced. This work presents a tailored composite material for MDCs, offering insights into its interaction mechanisms and performance contributions to the MDC system, marking a significant advancement in membrane-based desalination technology.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile synthesis of carbon dioxide and UV light dual-responsive asymmetric tetrablock polymers 二氧化碳和紫外光双响应不对称四嵌段聚合物的简便合成

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-10-28 DOI: 10.1016/j.reactfunctpolym.2024.106077

{"title":"Facile synthesis of carbon dioxide and UV light dual-responsive asymmetric tetrablock polymers","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106077","DOIUrl":"10.1016/j.reactfunctpolym.2024.106077","url":null,"abstract":"<div><div>This work reports the synthesis of CO<sub>2</sub>/ultraviolet (UV) light dual-responsive CABC-type asymmetric tetrablock polymers (CABC-ATP) based on organocatalyzed reversible complexation-mediated radical polymerization (RCMP) with methyl methacrylate (MMA), 2-Propenoic acid, 2-methyl-4-methyl-2-oxo-2H-1-benzopyran-7-yl ester (CMMA), and 2-(dimethylamino)ethyl methacrylate (DMAEMA) as block monomers by three steps. The obtained CABC-ATP has controllable number average molecular weight (<em>M</em><sub>n</sub>) and narrow molecular weight distribution (<em>M</em><sub>w</sub>/<em>M</em><sub>n</sub> = 1.18–1.29). The hydrodynamic diameter and fluorescence intensity were measured using dynamic light scattering coupled with fluorescence assays. Notably, the vesicle volume increased from an initial measurement of 247.6 nm to 285.4 nm post-experiment. The initial fluorescence emission intensity recorded was 4971, which decreased to 1412 following the introduction of carbon dioxide for 20 min. Subsequently, the fluorescence intensity recovered to 5199 upon nitrogen exposure. The response behavior of CABC-ATP to UV light is due to the cross-linking of coumarin-based monomer, resulting in the change of fluorescence intensity at the macro level. Besides, the protonation of tertiary amine is promoted by the stimulation of CO<sub>2</sub>, generating of the change of vesicle volume at the micro level.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Functionalized carbon nanotube-quantum dot thin film nanocomposite membrane for separation of β-substituted-α-amino acid enantiomers 用于分离 β-取代-α-氨基酸对映体的功能化碳纳米管-量子点薄膜纳米复合膜

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-10-28 DOI: 10.1016/j.reactfunctpolym.2024.106079

{"title":"Functionalized carbon nanotube-quantum dot thin film nanocomposite membrane for separation of β-substituted-α-amino acid enantiomers","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106079","DOIUrl":"10.1016/j.reactfunctpolym.2024.106079","url":null,"abstract":"<div><div>This work introduces a novel thin-film nanocomposite membrane, designed for highly efficient chiral separation, utilizing functionalized Multi-walled Carbon Nantubes (COOH-MWCNTs) and carbon quantum dots (CQDs). Fabricated via interfacial polymerization on a polysulfone support embedded with COOH-MWCNTs, the membrane was evaluated for its ability to separate racemic mixtures of 3,4-dihydroxyphenylalanine, tryptophan, threonine, tyrosine, and 1-methyltryptophan. The optimized membrane composition was found to be 3 % COOH-MWCNTs and 2 % CQDs in 4 bar operating pressure, feed concentrations at 10 mmol·L<sup>−1</sup>, and temperature at 35 °C, under which an enantiomeric excess (%ee) was achieved as 99 % for L-tryptophan in the permeate side, the highest among the five tested racemic mixtures. This enhanced separation performance is driven by the synergistic role of COOH-MWCNTs in the support layer and the precise interactions between CQDs and D-tryptophan in the active layer. Additionally, the membrane exhibited excellent long-term stability and antifouling properties, ensuring sustained performance over ten permeation cycles. The membrane's outstanding enantioselectivity, mechanical robustness, and durability represent a significant breakthrough in chiral separation technologies.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gallic acid modified and green cross-linked chitosan-dialdehyde cellulose antibacterial aerogels and adsorption of anionic dyes 没食子酸改性和绿色交联壳聚糖-二甲醛纤维素抗菌气凝胶及其对阴离子染料的吸附作用

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-10-26 DOI: 10.1016/j.reactfunctpolym.2024.106076

{"title":"Gallic acid modified and green cross-linked chitosan-dialdehyde cellulose antibacterial aerogels and adsorption of anionic dyes","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106076","DOIUrl":"10.1016/j.reactfunctpolym.2024.106076","url":null,"abstract":"<div><div>In this paper, a new green method for preparing multifunctional chitosan-based aerogels was prepared by using natural plant polyphenols instead of traditional chemical crosslinking agents. The aerogel was crosslinked by a Schiff base reaction between chitosan and cellulose aldehyde, and then functionalized with gallic acid to enhance the structure and endow antibacterial properties. The aerogel displayed a three-dimensional, cross-linked porous structure and exhibited selective adsorption of anionic dyes. The theoretical maximum adsorption capacity of amaranth was 450.89 mg/g. The adsorption process is more consistent with the pseudo-second-order kinetic model and the Langmuir isotherm model, indicating that the adsorption process is monolayer chemical adsorption. The aerogel exhibited superior adsorption performance at a pH value of 4, with the adsorption mechanism predominantly being electrostatic adsorption. The maximum inhibition zones of the aerogels on <em>E. coli</em> and <em>S. aureus</em> were 19.8 mm and 16.8 mm, respectively, and the adsorption value of Cr (VI) was greater than 160 mg/g. The chitosan-based aerogel proposed in this paper may be a promising material for treating complex wastewater containing dyes and heavy metals.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solvent-free room-temperature curable organic/silicone hybrid coating with high transparency and durable antifouling ability 无溶剂室温固化有机硅混合涂料，具有高透明度和持久防污能力

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-10-26 DOI: 10.1016/j.reactfunctpolym.2024.106078

{"title":"Solvent-free room-temperature curable organic/silicone hybrid coating with high transparency and durable antifouling ability","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106078","DOIUrl":"10.1016/j.reactfunctpolym.2024.106078","url":null,"abstract":"<div><div>Coatings with liquid repellent or antifouling ability are highly desirable in various fields. However, it is still a challenge to prepare solvent-free and room-temperature curable coating with high hardness, great antifouling performance, durability and large-area applicability. Herein, a novel strategy is reported to prepare organic/silicone hybrid coating by using amine-closed hyperbranched polysiloxane (SHPSi) as a latent curing, and diisocyanate containing a small amount of PFPE as an organic connecting part. In the presence of moisture, the mixture of the latent curing and the organic part can be cured at room temperature, and the smooth and low surface energy coating was obtained. The prepared hybrid coating had great transparency with the transmittance over 90 %. Due to the migration tendency of the PFPE to the air side, the surface energy of the hybrid coating decreased from 35.9 mJ/m<sup>2</sup> to 13.5 mJ/m<sup>2</sup> with 0.5 wt% PFPE, and the hybrid coating exhibited excellent antifouling ability. Besides, the hybrid coating can maintain the antifouling ability even after 2000 abrasion cycles. Furthermore, the great stability for various corrosive solutions and UV radiation was also achieved. More interestingly, the hybrid coating can be employed to protect various substrates, and large-area substrate was also realized. Therefore, this work would promote the application of high-performance organic/silicone hybrid coatings in an eco-friendly way.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nickel-plated cyanate Ester/melamine shape memory composites for stable electromagnetic shielding switch, infrared stealth, and flame retardancy 用于稳定电磁屏蔽开关、红外线隐身和阻燃的镀镍氰酸酯/三聚氰胺形状记忆复合材料

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-10-24 DOI: 10.1016/j.reactfunctpolym.2024.106073

{"title":"Nickel-plated cyanate Ester/melamine shape memory composites for stable electromagnetic shielding switch, infrared stealth, and flame retardancy","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106073","DOIUrl":"10.1016/j.reactfunctpolym.2024.106073","url":null,"abstract":"<div><div>Military equipment must receive signals but is prone to malfunction due to electromagnetic interference. Moreover, operational temperature variations can be detected by infrared sensors, leading to potential exposure. Therefore, developing materials that integrate electromagnetic shielding switches with infrared stealth capabilities is crucial for enhancing target security. This study investigates a novel composite material that combines shape memory polymer (SMP) and conductive layers for integrated functionality. Utilizing melamine sponge as the substrate, a cyanate ester (CE)-nitrile rubber (NR) SMP coating is applied via dip-coating, allowing the sponge to self-fixate after deformation. The SMP demonstrates stable shape recovery. Subsequently, a conductive nickel layer is added through keratin modification and chemical plating, providing electromagnetic shielding effectiveness exceeding 30 dB and reducing infrared emissivity to 0.6. The composite material is capable of achieving controllable electromagnetic shielding switches of 35 dB and 15 dB. It maintains excellent electromagnetic shielding and infrared stealth capabilities even under acid rain conditions and extreme temperature variations. This innovative approach holds significant promise for applications requiring simultaneous electromagnetic and infrared protection.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of aluminum diethyl hypophosphite, iron-based metal organic framework-NH2-MIL-53(Fe), and expandable graphite complexes as flame retardants for high-density polyethylene 二乙基次磷酸铝、铁基金属有机框架-NH2-MIL-53(Fe)和可膨胀石墨复合物作为高密度聚乙烯阻燃剂的应用

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-10-24 DOI: 10.1016/j.reactfunctpolym.2024.106074

{"title":"Application of aluminum diethyl hypophosphite, iron-based metal organic framework-NH2-MIL-53(Fe), and expandable graphite complexes as flame retardants for high-density polyethylene","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106074","DOIUrl":"10.1016/j.reactfunctpolym.2024.106074","url":null,"abstract":"<div><div>High-density polyethylene (HDPE) composites are made by melt blending HDPE with MIL-53(Fe), amino-functionalized NH<sub>2</sub>-MIL-53(Fe), aluminum diethyl hypophosphite (ADP), and expandable graphite (EG). The experimental disclosed showed that the aminated NH<sub>2</sub>-MIL-53(Fe) could improve residual carbon quality and exert a better flame retardant effect than MIL-53(Fe). When 25 wt% of EG/ADP/NH<sub>2</sub>-MIL-53(Fe) was added and the ratio of EG to ADP/ NH<sub>2</sub>-MIL-53(Fe) was 1:1, HDPE/EG/ADP/NH<sub>2</sub>-MIL-53(Fe) composites could achieve a limiting oxygen index of 31.1 %, which passed UL-94 testing and was rated V-0. This results in a considerable improvement in flame retardant efficiency as the peak heat release rate was lowered by 83.4 % and the total heat release was reduced by 35.8 % when compared to the pure HDPE material. Therefore, NH<sub>2</sub>-MIL-53(Fe)/ADP/EG synergistic flame retardancy can lead to high flame retardancy efficiency in HDPE. This provided a new potential direction for the preparation of highly efficient flame retardants.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Visible-light-driven Fe-catalyzed alkylation for synthesizing functionalized polyolefin elastomers as advanced encapsulants in photovoltaic modules 利用可见光驱动的铁催化烷基化合成功能化聚烯烃弹性体，作为光伏组件的高级封装材料

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-10-20 DOI: 10.1016/j.reactfunctpolym.2024.106072

{"title":"Visible-light-driven Fe-catalyzed alkylation for synthesizing functionalized polyolefin elastomers as advanced encapsulants in photovoltaic modules","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106072","DOIUrl":"10.1016/j.reactfunctpolym.2024.106072","url":null,"abstract":"<div><div>Polyolefin elastomer (POE) has emerged as a promising encapsulant for photovoltaic modules, attributed to its exceptional water vapor barrier properties, robust weather resistance, and enhanced anti-potential induced degradation (anti-PID) capabilities. Despite these advantages, the interfacial adhesion of POE remains a significant challenge, particularly its suboptimal bonding with glass and solar cells, which impedes its broader application within the photovoltaic industry. This study introduced glycidyl methacrylate (GMA) monomers into POE through a photo-induced iron-catalyzed alkylation reaction, developing a novel polyolefin encapsulant for photovoltaic modules. The encapsulant was designed to possess high light transmittance, enhanced adhesion, and elevated resistivity. The modified POE boasts an impressive light transmittance nearing 98% and an adhesive strength of 28.3 N cm<sup>−1</sup>, both superior to traditional ethylene-vinyl acetate copolymer (EVA) materials. Additionally, this work delves into the correlation between crystallization behavior and light transmittance, elucidating the influence of GMA incorporation on the adhesion and insulation properties of POE through gaussian simulations.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142537909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance of orange peels crosslinked β-cyclodextrin (OP-β-CD) to uptake lanthanum from water: Conventional adsorption studies and ultrasound-assisted desorption 橙皮交联β-环糊精（OP-β-CD）吸附水中镧的性能：传统吸附研究和超声辅助解吸

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2024-10-16 DOI: 10.1016/j.reactfunctpolym.2024.106071

{"title":"Performance of orange peels crosslinked β-cyclodextrin (OP-β-CD) to uptake lanthanum from water: Conventional adsorption studies and ultrasound-assisted desorption","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106071","DOIUrl":"10.1016/j.reactfunctpolym.2024.106071","url":null,"abstract":"<div><div>Even though adsorption has been widely employed to recover rare earth elements such as lanthanum, desorption remains challenging since selectivity is often linked to strong adsorption forces. Herein we propose the grafting between orange peel (OP) wastes with beta-cyclodextrins (β-CD) for producing a highly reusable and stable adsorbent that allows the easy recovery of lanthanum in repeated cyclic runs. The morphological analysis confirmed that the OP-β-CD adsorbent was successfully functionalized with –OH groups, with β-CD grafting <em>via</em> citric acid expanding and stabilizing its structure. The pseudo-first-order model better represented the kinetics of lanthanum adsorption, while the isothermal behavior was better represented by the Langmuir model (<span><math><msub><mi>q</mi><mi>max</mi></msub><mo>=</mo><mn>95.79</mn><mspace></mspace><mi>mg</mi><mspace></mspace><msup><mi>g</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></math></span>), as shown by the thermodynamic analysis, which confirmed that the process was endothermic and spontaneous. The mechanism behind the efficiency of adsorption-desorption of lanthanum by OP-β-CD adsorbent was concluded to rely on: i) electrostatic and reversible interactions and ii) a driving force that increased as the amount of lanthanum increased in solution, leading to the formation of a monolayer. Around 95 % of lanthanum was desorbed using an ultrasound-assisted technique with citric acid, maintaining stable adsorption capacity for 5 cycles. In real matrices containing other rare earth elements and high calcium concentrations the removal exceeded 80 %. Thus, OP-β-CD's remarkable stability during desorption underscores its potential as a highly effective and sustainable solution for rare earth element recovery and removal.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142537908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0