Journal of Polymers and the Environment最新文献_第10页

Immobilized Deep Eutectic Solvent ChCl–2ZnCl2@ZIF-8 Composite as an Efficient and Reusable Catalyst for the Methanolysis of Poly(lactic Acid) 固定化深共晶溶剂 ChCl-2ZnCl2@ZIF-8 复合材料作为高效且可重复使用的聚乳酸甲烷化催化剂

IF 5.3 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-05-18 DOI: 10.1007/s10924-024-03302-9

Xiaoxu Zhu, Huimin Zhao, Hui Wang, Daoshan Yang, Fusheng Liu, Xiuyan Song

{"title":"Immobilized Deep Eutectic Solvent ChCl–2ZnCl2@ZIF-8 Composite as an Efficient and Reusable Catalyst for the Methanolysis of Poly(lactic Acid)","authors":"Xiaoxu Zhu, Huimin Zhao, Hui Wang, Daoshan Yang, Fusheng Liu, Xiuyan Song","doi":"10.1007/s10924-024-03302-9","DOIUrl":"https://doi.org/10.1007/s10924-024-03302-9","url":null,"abstract":"Polylactic acid (PLA), as a biodegradable plastic, is considered a potential alternative to alleviate the environmental problems caused by the accumulation of petroleum-based plastic wastes. However, PLA is relatively expensive and naturally degrades very slowly. Therefore, compared to disposal, recycling PLA is more conducive to sustainable development. In this study, a novel immobilized deep eutectic solvent (DES) ChCl–2ZnCl2@ZIF-8 was developed and used for the methanolysis of PLA to produce a valuable product methyl lactate (ML). The synthesized heterogeneous catalyst exhibits excellent thermal and chemical stability, as well as excellent catalytic performance. For example, the reaction temperature significantly decreased, the dosage of the catalyst decreased, and the PLA conversion and the ML yield were both improved, reaching 98.2% and 96.3%. After the reaction, the catalyst can be recovered through simple filtration, and reused for five times with negligible loss of catalytic activity. The catalyst was characterized by FT-IR, SEM, BET, TGA and XRD. Based on the experimental results, a possible reaction mechanism of PLA methanolysis was proposed. In addition, the kinetics of the PLA methanolysis catalyzed by ChCl–2ZnCl2@ZIF-8 was examined and the activation energy was obtained. This work mainly provided a way of recovering catalysts and promoted the development of PLA methanolysis into ML.","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141060859","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}

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Biocompatible Cellulose-Based Superabsorbents for Personal Care Products 用于个人护理产品的生物相容性纤维素基超级吸附剂

IF 5.3 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-05-17 DOI: 10.1007/s10924-024-03315-4

R. C. Rebelo, Blanca Vélez Báguena, Patrícia Pereira, Rui Moreira, J. F. Coelho, A. Serra

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High Performance Lithium Ion-Conducting Plasticized Biopolymer Electrolyte for Supercapacitor Application 用于超级电容器的高性能锂离子传导增塑生物聚合物电解质

IF 5.3 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-05-17 DOI: 10.1007/s10924-024-03322-5

M. Nandhinilakshmi, D. Vanitha, N. Nallamuthu, K. Sundaramahalingam, P. Saranya, Shameem Abdul Samad

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Enhanced Nanofiltration Performance of the PVC/PVA Thin Film Membranes for Treatment of Petroleum Refinery Wastewater through Incorporation of Amino-functionalized SBA-15 Nanoparticles 通过加入氨基官能化 SBA-15 纳米颗粒提高 PVC/PVA 薄膜的纳滤性能以处理石油精炼废水

IF 5.3 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-05-17 DOI: 10.1007/s10924-024-03300-x

Milad Hermani, Hossein Abdollahi-Esfahlani, Amir Sadeghi, Abolfazl Sadeghiazar Sharabiani, Erfan Shafaati, Ali Imani, Ahdieh Amjadi, Atena Daneshvar

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Controllable Synthesis and Rheological Characterization of Hydroxypropyl Methyl Cellulose 羟丙基甲基纤维素的可控合成与流变特性分析

IF 5.3 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-05-16 DOI: 10.1007/s10924-024-03293-7

Kai Yuan, Yuting Zhao, QunZhi Hu, MengJie Liu, Dan Li, Hua Zheng

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Enhanced Phosphate Sequestration by Alginate-based Aerogel Granules Functionalized with Nanoscale Zerovalent Iron 用纳米级零价铁功能化的海藻酸盐气凝胶颗粒增强磷酸盐螯合作用

IF 5.3 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-05-15 DOI: 10.1007/s10924-024-03318-1

S. Bhattacharjee, Abdallah Shanableh, Sefeera Sadik

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Silica Functionalized Almond Gum Derivatives for Integrated Flocculation Cycles for Natural and Synthetic Water Systems 用于天然水和合成水系统综合絮凝循环的二氧化硅功能化杏仁胶衍生物

IF 5.3 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-05-14 DOI: 10.1007/s10924-024-03299-1

Munmun Choudhary, Sumit Mishra

{"title":"Silica Functionalized Almond Gum Derivatives for Integrated Flocculation Cycles for Natural and Synthetic Water Systems","authors":"Munmun Choudhary, Sumit Mishra","doi":"10.1007/s10924-024-03299-1","DOIUrl":"https://doi.org/10.1007/s10924-024-03299-1","url":null,"abstract":"Natural gum-based flocculants are prevalent for water treatment, still their efficiency can be improved by the incorporation of eco-friendly inorganic fillers. Such inorganic–organic-based hybrid materials need to be explored more in natural and synthetic water systems for their proof of concept and related applications. Hybrid almond gum (Amg) grafted polyacrylamide/silica-based composite (Amg-g-PAM/SiO2) was synthesized and assessed as a flocculant for natural and synthetic water systems. The synthesis was characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), Energy dispersive X-ray spectroscopy (EDS), Thermogravimetric analysis (TGA), Differential scanning calorimetry (DSC) and X-ray photoelectron spectroscopy (XPS) to study the chemical, structural, thermal, and surface properties. The synthesized grades of Amg-g-PAM and Amg-g-PAM/SiO2 were tested for their flocculation performance in kaolin, iron ore and MWCNT suspensions. pH and temperature variations, zeta potential measurements were studied on neutral kaolin suspension. The best flocculation efficiency was observed to be 98%, 96%, 95% and 92% in MWCNT, kaolin, iron ore suspensions and river water respectively at pH 4 and 25 °C. Overall, Amg-g-PAM/SiO2 flocculant possesses unique characteristics of conventional branched graft copolymers which increases easy approachability towards suspended particles while its inorganic counterpart enhances adsorption. Thus, this hybrid flocculant is better than any of its individual inorganic or organic counterparts in terms of flocculation efficacy.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933184","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}

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Enhanced Storage Resistance of Mulberries Using Laminated Cellulose Nanocrystals/Chitosan Composite Coatings 使用层叠纤维素纳米晶体/壳聚糖复合涂层增强桑葚的耐储存性

IF 5.3 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-05-14 DOI: 10.1007/s10924-024-03233-5

Xiaoyan Liu, Mingjun Ma, Haonan Yu, Shaoyu Shang, Lanxing Du

{"title":"Enhanced Storage Resistance of Mulberries Using Laminated Cellulose Nanocrystals/Chitosan Composite Coatings","authors":"Xiaoyan Liu, Mingjun Ma, Haonan Yu, Shaoyu Shang, Lanxing Du","doi":"10.1007/s10924-024-03233-5","DOIUrl":"https://doi.org/10.1007/s10924-024-03233-5","url":null,"abstract":"Fresh mulberry is a soft and juicy fruit with no protective layer on the skin, limiting its storage and transportation. Nanocellulose (NCC) and chitosan (CS) films have extensive potential in packaging due to their high–gas barrier, excellent mechanical, and antibacterial properties. Therefore, this study aimed to improve the storage resistance of fresh mulberries using laminated cellulose nanocrystal/CS (NCC/CS) composite coatings. The relationships between film microstructure, gas barrier characteristics, and mulberry storage properties were investigated. The results showed that the prepared NCC had a crystallinity of 80.40% with the length of 382.53 ± 42.40 nm and the diameter of 10.97 ± 4.71 nm. It was capable of forming a uniform film with an oxygen transmittance rate of 23.97 × 103 cm3/(cm2 day) and a solubility rate of 0.0025 g/min. The laminated NCC/CS composites had a denser structure, a lower oxygen transmittance rate of 0.62 × 103 cm3/(cm2 day), and antibacterial properties, as indicated by an inhibition circle measuring 5.3–6.2 mm in diameter. During storage, NCC/CS-coated mulberries displayed a slowly reducing sensory quality, lower mass loss rate, and lower rotting rate. After 10 days, compared with the uncoated mulberry, the soluble solid content in NCC/CS-coated mulberries decreased from 10.9 to 8.73%, soluble glucose content increased from 5.24 to 6.2%, and malondialdehyde content increased from 20.43 to 37.95%. The coating provided mechanical protection and offered superior oxygen barrier properties and a denser microstructure, leading to a weaker respiratory function and better mulberry storage. The findings of this study provided a novel approach for the practical application of NCC materials.","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933669","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}

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Biodegradation Behavior and Life Cycle Assessment of PLA/PHBV/Carbonaceous Materials Hybrid Nanocomposites for Antimicrobial Multifunctional Packaging 用于抗菌多功能包装的聚乳酸/PHBV/碳材料混合纳米复合材料的生物降解行为和生命周期评估

IF 5.3 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-05-10 DOI: 10.1007/s10924-024-03286-6

Erick Gabriel Ribeiro dos Anjos, Tayra Rodrigues Brazil, Larissa Stieven Montagna, Guilherme Ferreira de Melo Morgado, Eduardo Ferreira Martins, Luiz Antonio Pessan, Francys Kley Vieira Moreira, Juliano Marini, Fabio Roberto Passador

{"title":"Biodegradation Behavior and Life Cycle Assessment of PLA/PHBV/Carbonaceous Materials Hybrid Nanocomposites for Antimicrobial Multifunctional Packaging","authors":"Erick Gabriel Ribeiro dos Anjos, Tayra Rodrigues Brazil, Larissa Stieven Montagna, Guilherme Ferreira de Melo Morgado, Eduardo Ferreira Martins, Luiz Antonio Pessan, Francys Kley Vieira Moreira, Juliano Marini, Fabio Roberto Passador","doi":"10.1007/s10924-024-03286-6","DOIUrl":"https://doi.org/10.1007/s10924-024-03286-6","url":null,"abstract":"Renewable multifunctional materials are crucial for advancing industries such as electronics and packaging. This study investigates the potential of graphene nanoplatelet (GNP) and multi-wall carbon nanotube (MWCNT) reinforcement in poly(lactic acid) (PLA)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blends for multifunctional packaging. Employing solvent-free techniques, we conducted a comprehensive analysis of morphological, thermal, mechanical, antimicrobial, and biodegradable properties. High-resolution scanning electron microscopy (FEG-SEM) was applied to evaluate the nanofiller morphologies and the immiscibility between PLA and PHBV, while differential scanning calorimetry (DSC) confirmed crystallinity changes induced by carbon nanomaterials. Mechanical tests demonstrated remarkable enhancements, notably a 30% increase in elastic modulus and 195% in ultimate tensile strength. Antimicrobial assays revealed exceptional effectiveness, especially in GNP-containing nanocomposites. Crucially, biodegradation tests highlighted compatibility with the blend. A Life Cycle Assessment (LCA) underscored significant eco-efficiency, minimizing harmful emissions. These findings emphasize the potential of MWCNT, GNP-reinforced PLA/PHBV nanocomposites for diverse applications and as eco-friendly alternatives to conventional plastics.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933422","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}

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Properties of Gluten Foam Composites Containing Different Fibers and Particulates 含有不同纤维和微粒的谷蛋白泡沫复合材料的性能

IF 5.3 3区工程技术

Journal of Polymers and the Environment Pub Date : 2024-05-10 DOI: 10.1007/s10924-024-03295-5

Bor-Sen Chiou, Trung Cao, Zach McCaffrey, Cristina Bilbao-Sainz, Delilah Wood, Greg Glenn, William Orts

{"title":"Properties of Gluten Foam Composites Containing Different Fibers and Particulates","authors":"Bor-Sen Chiou, Trung Cao, Zach McCaffrey, Cristina Bilbao-Sainz, Delilah Wood, Greg Glenn, William Orts","doi":"10.1007/s10924-024-03295-5","DOIUrl":"https://doi.org/10.1007/s10924-024-03295-5","url":null,"abstract":"Gluten-based foam composites containing various additives were produced to develop materials derived from mostly renewable resources. The fillers included walnut shells, torrefied walnut shells, paraffin wax, milkweed fibers, hemp fibers, and cotton fibers. The effects of the fillers on the foam composites’ properties were determined using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis, compression testing, and water uptake measurements. SEM results showed that most of the fillers were well dispersed in the gluten matrix except for the cotton fibers, which produced agglomerated fiber bundles. FTIR results indicated that foams had a more aggregated structure with higher β-sheet contents than gluten powder. In general, foam composites containing fibers had larger compressive modulus values than those containing particulates. The sample containing 10 wt% milkweed fibers had the highest value of 67.03 ± 12.01 MPa. Also, composites containing torrefied walnut shells had higher compressive strength values than those containing raw walnut shells, indicating better compatibility with the gluten matrix. Moreover, the water uptake values of the foam composites varied from 110 to 270%, with the samples containing milkweed fibers having the largest values.","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933318","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