Journal of Polymers and the Environment最新文献_第4页

Synthesis of Electrically Conductive Montmorillonite-Polypyrrole Composite Nanoparticles to Enhance the Antifouling, Cleaning Efficiency and Arsenic Separation in PLA Membranes

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2025-01-18 DOI: 10.1007/s10924-025-03489-5

Elham Shokri, Elham Effati, Kosar Behmaram

{"title":"Synthesis of Electrically Conductive Montmorillonite-Polypyrrole Composite Nanoparticles to Enhance the Antifouling, Cleaning Efficiency and Arsenic Separation in PLA Membranes","authors":"Elham Shokri, Elham Effati, Kosar Behmaram","doi":"10.1007/s10924-025-03489-5","DOIUrl":"10.1007/s10924-025-03489-5","url":null,"abstract":"<div><p>This study focuses on the synthesis of electrically conductive montmorillonite-polypyrrole (Mt-PPy) composite nanoparticles (NPs) to enhance antifouling properties and arsenate (As (V)) separation. Fourier transforms infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and scanning electron microscopy (SEM) confirmed the formation of Mt-PPy composite NPs. Results from porosity, mechanical property, and water uptake analysis of the fabricated membranes incorporating Mt-PPy demonstrated superior performance for the PLA-(Mt-PPy-0.5) membrane. The positive charge of PPy and Cl ions in its structure enhanced the As (V) removal efficiency, mainly in PLA-(Mt-PPy-0.5) membrane (~ 100%), where the concentration of Mt-PPy was higher and well-dispersed. An electro-conductive PLA-(Mt-PPy) membrane was employed as a cathode, and the impact of Mt-PPy concentration on the cleaning efficacy of the membranes examined. The findings highlight the potential of conductive membrane in improving antifouling performance. By applying an electric current, PLA-(Mt-PPy-0.5) membrane achieved highest flux recovery ratio (FRR) of approximately 91.3%, due to the stronger repulsive force between the membrane and humic acid (HA). This process also increased As (V) desorption, enabling effective use of the membrane in multiple As (V) adsorption-desorption cycles.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1528 - 1541"},"PeriodicalIF":4.7,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423364","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

Assessment of Four Artificial Methods for Aging Plastic Mulch Films According to Efficiency, Rate, and Similarity to Natural Field-Aged Plastics

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2025-01-18 DOI: 10.1007/s10924-024-03481-5

Martine Graf, Michaela K. Reay, Athanasios Dimitriou, David R. Chadwick, Davey L. Jones

{"title":"Assessment of Four Artificial Methods for Aging Plastic Mulch Films According to Efficiency, Rate, and Similarity to Natural Field-Aged Plastics","authors":"Martine Graf, Michaela K. Reay, Athanasios Dimitriou, David R. Chadwick, Davey L. Jones","doi":"10.1007/s10924-024-03481-5","DOIUrl":"10.1007/s10924-024-03481-5","url":null,"abstract":"<div><p>Artificial degradation is often used to recreate and accelerate the natural aging of plastic for small-scaled simulation experiments assessing their environmental impact. However, current artificial aging methods are rarely compared against reference materials or validated using field-aged samples, creating uncertainties when extrapolating results to naturally aged plastics, making it difficult to place findings in an environmentally applicable context. Therefore, here we compared four accessible, cost-effective, and easily replicable methods (heat, UVA, and UVC irradiance at two intensities) to produce artificially degraded materials. The artificial aging methods were assessed over a duration of 5 months against degradation rate, efficiency, and similarity to field-aged samples of conventional and biodegradable plastic mulch film over a 6-month field exposure period. We utilised attenuated total reflectance-Fourier transform infrared spectroscopy to calculate the carbonyl index and measure chemical changes of the mulch film surface, as well as differential scanning calorimetry and thermogravimetric analysis. Physical changes were assessed by thickness and surface roughness measurements. We found that UVA was the most suitable and realistic artificial degradation method at a medium rate, whilst UVC is recommended for rapid degradation without the need to simulate realistic changes, and heat for processing large volumes of samples without a requirement for realistic degradation over a prolonged time period. However, the methods compared in this study yielded differential results depending on polymer type and parameter of interest. We therefore recommend establishing the degradation aim, identifying the spectral region of interest, and accounting for different polymer types to select the most appropriate method.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1542 - 1560"},"PeriodicalIF":4.7,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10924-024-03481-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving rPET/PBT Bead Foam Structure via Chain Extender Modification and Blend Variance

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2025-01-11 DOI: 10.1007/s10924-024-03360-z

Andreas Himmelsbach, Yavuz Akdevelioglu, Mohammadreza Nofar, Holger Ruckdäschel

{"title":"Improving rPET/PBT Bead Foam Structure via Chain Extender Modification and Blend Variance","authors":"Andreas Himmelsbach, Yavuz Akdevelioglu, Mohammadreza Nofar, Holger Ruckdäschel","doi":"10.1007/s10924-024-03360-z","DOIUrl":"10.1007/s10924-024-03360-z","url":null,"abstract":"<div><p>In this study, the influence of the chain extender (CE) and the blend ratio on the bead foam extrusion of rPET/PBT is investigated. The shape and density of the bead foams were analyzed during extrusion using a camera scanner while the morphology of the foam was investigated using scanning electron microscopy (SEM). Melt strength and thermal behavior were also investigated with Rheotens and differential scanning calorimetry (DSC), respectively. Both chain extender and blend ratio had pronounced effect on the foaming behavior. Significant improvements were observed up to 0.8 wt.-% CE in rPET50PBT50, which achieved an average cell size of 107 ± 17 μm and a density of 182 kg/m³, representing a weight reduction of 86.4% compared to the bulk material. In addition, rPET40PBT60 with 0.8 wt.-% CE gave an average cell size of 108 ± 23 μm and a foam density of 170 kg/m³, with a comparable cell size distribution. After CE modification, the melt strength of rPET-dominant blends obtained higher values but a strong decrease in elongation was observed. In contrast, the CE-modified rPET40PBT60 and rPET30PBT70 blends exhibited much higher elongation with a moderate increase in melt strength which resulted in better bead and foam morphologies. DSC analysis revealed lowest crystallization temperature in rPET50PBT50 with deviations shifting towards higher temperatures. All blends except rPET70PBT30 shows double melting peak formation, with higher rPET formulations also exhibiting cold crystallization. These findings provide crucial insight for development of rPET/PBT foams by controlling the blend and CE composition, which is critical for achieving temperature-resistant bead foams with improved structural integrity.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1517 - 1527"},"PeriodicalIF":4.7,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10924-024-03360-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Room-Temperature Synthesis of pH-Responsive MOF Nanocarriers for Targeted Drug Delivery in Cancer Therapy

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2025-01-11 DOI: 10.1007/s10924-025-03496-6

Amir Kazemi, Mohammad Hossein Afshari, Hasan Baesmat, Saber Keshavarz, Fateme Zeinali, Shahla Zahiri, Elahe Torabi, Faranak Manteghi, Sohrab Rohani

{"title":"Room-Temperature Synthesis of pH-Responsive MOF Nanocarriers for Targeted Drug Delivery in Cancer Therapy","authors":"Amir Kazemi, Mohammad Hossein Afshari, Hasan Baesmat, Saber Keshavarz, Fateme Zeinali, Shahla Zahiri, Elahe Torabi, Faranak Manteghi, Sohrab Rohani","doi":"10.1007/s10924-025-03496-6","DOIUrl":"10.1007/s10924-025-03496-6","url":null,"abstract":"<div><p>The synthesis of nanoscale metal-organic frameworks (MOFs) is emerging as a promising method for targeted drug delivery in cancer therapy. In this study, unlike conventional solvothermal methods that require high temperatures, room-temperature synthesis of two Zn-MOF-74 variants was achieved using zinc nitrate and zinc acetate with triethylamine (TEA). The use of different anions allows precise control over the morphology and particle size of the MOF, optimizing drug loading in nanocarriers. Drug loading and release were evaluated using 5-fluorouracil (5-FU) as a model drug in both aqueous and ethanolic environments. The results showed that Zn-MOF-74 prepared with zinc acetate (R<sub>A</sub>-MOF-74) at a 1:1 drug-to-nanocarrier ratio in ethanol exhibited superior drug adsorption and release characteristics. To enhance biocompatibility and controlled release, R<sub>A</sub>-MOF-74 nanocarriers were coated with two biodegradable polymers, sodium alginate (ALG) and polydopamine (PDA), to improve stability at low pH and enhance release control. The release profiles of 5-FU from R<sub>A</sub>-MOF-74 and its coated samples (PDA and ALG) were evaluated at different pH levels. In uncoated R<sub>A</sub>-MOF-74, drug release at pH 7.4 and 8 was 48.4% and 59.1%, respectively, reaching 100% at pH 1.5. For the coated samples, 5-FU@R<sub>A</sub>-MOF-74/ALG released 19.8% and 45.9% at pH 1.5 and 8, respectively, while 5-FU@R<sub>A</sub>-MOF-74/PDA showed 25.2% and 40.8% release at pH 7.4 and 5.5. These results clearly highlight pH-sensitive release and the role of biocompatible coatings in enhancing controlled drug release, demonstrating the potential of Zn-MOF-74 with controlled morphology for pH-responsive delivery of 5-FU in cancer therapy, paving the way for future in vivo applications.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1505 - 1516"},"PeriodicalIF":4.7,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423245","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

Feasibility Assessment of BIO-PUR Composites for Offshore Applications 近海应用 BIO-PUR 复合材料的可行性评估

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2025-01-09 DOI: 10.1007/s10924-024-03485-1

Oihane Echeverria-Altuna, Pablo Benguria, Ainara Saralegi, Isabel Harismendy, Arantxa Eceiza

{"title":"Feasibility Assessment of BIO-PUR Composites for Offshore Applications","authors":"Oihane Echeverria-Altuna, Pablo Benguria, Ainara Saralegi, Isabel Harismendy, Arantxa Eceiza","doi":"10.1007/s10924-024-03485-1","DOIUrl":"10.1007/s10924-024-03485-1","url":null,"abstract":"<div><p>The quest for sustainable materials in offshore renewable energy is critical for mitigating the environmental concerns associated with the use of conventional composites. This study explores the potential of vegetable oil-based polyurethanes (BIO-PUR) as a sustainable alternative to petrochemical-based resins in offshore structural applications. BIO-PUR composites were fabricated, mechanically characterized, and subjected to real-world marine environments in the HarshLab floating laboratory, with exposure durations of 3 and 5 months in both atmospheric and immersion zones. Comprehensive testing, including dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR), and interlaminar shear strength (ILSS) assessments, showed no significant degradation in the mechanical, thermal, or chemical properties of the composites. Notably, water absorption remained minimal, and the glass transition temperature of the material (T<sub>g</sub>) and interlaminar strength remained unchanged after exposure, highlighting the exceptional durability of BIO-PUR in harsh marine environments. These results suggest that BIO-PUR composites could not only meet but potentially surpass the performance requirements for long-term offshore applications, offering a highly promising eco-friendly alternative to traditional composites. This study provides a foundation for future research into the long-term viability of biobased materials in offshore energy systems, paving the way for more sustainable solutions in renewable energy infrastructures.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1491 - 1504"},"PeriodicalIF":4.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10924-024-03485-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Animal and Vegetable Proteins: Applications as Film and Coating in Food Industry

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2025-01-09 DOI: 10.1007/s10924-025-03487-7

Behzad Mohammadi, Sajad Pirsa, Mitra Mahmudi

{"title":"Animal and Vegetable Proteins: Applications as Film and Coating in Food Industry","authors":"Behzad Mohammadi, Sajad Pirsa, Mitra Mahmudi","doi":"10.1007/s10924-025-03487-7","DOIUrl":"10.1007/s10924-025-03487-7","url":null,"abstract":"<div><p>The growing global population, climate change and dietary patterns, and the demand for waste-free food production have increased the need for environmental protection. Packaging materials that have become more important to avoid food waste and environmental pollutants. Edible coatings and films used for preserving food are gaining popularity due to their eco-friendly nature and ability to carry active ingredients. Their use as antioxidant effectively help prevent quality deterioration by reducing oxidation and food spoilage. Edible packaging is now seen as a promising solution to extend shelf life of food products and reduce dependence on petroleum-based resources. Proteins are versatile materials suitable for producing edible and non-edible coatings and films. This article aims to provide a thorough overview of research on the use of proteins in food and edible packaging, including their modification, anti-oxidative, antimicrobial, and antifungal properties, as well as their economic implications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1233 - 1253"},"PeriodicalIF":4.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422985","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

Robust, Reprocessable and Scalable Ethylene Acrylic Acid Copolymer (EAA) Derived Vitrimer Based on Dual Cross-linked Networks

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2025-01-08 DOI: 10.1007/s10924-025-03497-5

Shiyu Wang, Shiji Gao, Xuanwei Zhang, Xiaopei Li, Yongjie Zhang

{"title":"Robust, Reprocessable and Scalable Ethylene Acrylic Acid Copolymer (EAA) Derived Vitrimer Based on Dual Cross-linked Networks","authors":"Shiyu Wang, Shiji Gao, Xuanwei Zhang, Xiaopei Li, Yongjie Zhang","doi":"10.1007/s10924-025-03497-5","DOIUrl":"10.1007/s10924-025-03497-5","url":null,"abstract":"<div><p>Vitrimers possess the dual advantages of thermoplastics and thermosets, combining reprocessability with excellent mechanical property, heat resistance, and solvent resistance. Ethylene acrylic acid copolymer (EAA) is a widely used semicrystalline thermoplastic that suffers from low Vicat softening point and poor creep resistance. Previously, we demonstrated a simple, efficient and scalable avenue to EAA derived vitrimer with excellent creep resistance and reprocessability. Yet the overall mechanical properties were suboptimal. In order to address this issue, dual cross-linked EAA vitrimers, namely, EAA-GDE-ZnO (GDE and ZnO represent ethylene glycol diglycidyl ether and zinc oxide, respectively), based on dynamic β-hydroxy ester covalent bonds and zinc carboxylate ionic bonds were designed and prepared through a simple and one-step reactive blending approach starting from low-cost commercial grade raw materials. The formation of covalent and ionic cross-linking networks were evidenced by torque rheometer, FTIR, and gel fraction testing. DMA tests demonstrated that clear rubbery plateaus for EAA-GDE-ZnO showed up above the melting temperature, serving as a hallmark that distinguishes vitrimer from its thermoplastic precursor. Meanwhile, EAA-GDE-ZnO exhibited excellent creep resistance even at elevated temperatures. The mechanical properties of dual cross-linked EAA-GDE-ZnO were significantly enhanced compared to its single cross-linked counterpart. Owing to the dynamic features of β-hydroxy ester and zinc carboxylate cross-linkages, the mechanical properties of EAA-GDE-ZnO were well maintained after 3 times reprocessing, proving the excellent (re)processability of EAA-GDE-ZnO.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1445 - 1458"},"PeriodicalIF":4.7,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423332","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

A Novel Natural Fibers-Based Bio-composite Prepared from Silk Fibroin and Luffa Cylindrica

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2025-01-08 DOI: 10.1007/s10924-024-03475-3

Ozge Akay Sefer, Gozde Konuk Ege, Derya Saltik, Huseyin Yuce

{"title":"A Novel Natural Fibers-Based Bio-composite Prepared from Silk Fibroin and Luffa Cylindrica","authors":"Ozge Akay Sefer, Gozde Konuk Ege, Derya Saltik, Huseyin Yuce","doi":"10.1007/s10924-024-03475-3","DOIUrl":"10.1007/s10924-024-03475-3","url":null,"abstract":"<div><p>Herein, the novel bio-based co-polymer was synthesized using only natural fibers by way of co-dissolving cellulose extracted from Luffa Cylindrica (LC) and silk fibroin (SF) in formic acid in different weight ratios (3SF/1LC, 2SF/2LC, and 1SF/3LC). The prepared bio-composite films were investigated by morphological, vibrational, structural, thermally, and wettability with Scanning electron microscope (SEM), Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction spectroscopy (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and water contact angle (WCA). The surface and cross-section SEM images of samples indicate that all films have homogeneous structures, and by varying the ratio of silk fibroin in blend films, a smoother and glassier appearance was obtained, as also proved by XRD and DSC results. The results of the FT-IR test reveal that the changing and shifting of peak intensities in the spectroscopy of bio-composite films indicate interactions between luffa cellulose and silk fibroins. XRD results show that silk fibroin enhances the crystallinity of bio-composite specimens. In addition, thermogravimetric analysis demonstrates that increasing the cellulose ratio in bio-composite films extends their thermal stability. The glass transition value provided by the DSC test proves that the flexibility of hybrid bio-composite films increases as the ratio of luffa increases. As a final analysis, WCA states that when blended with luffa and silk fibroin, although both are hydrophilic, the hybrid bio-composite films display hydrophobic properties, and LC increase enhances this behavior against water. The combination of these two materials can be used in environmentally friendly in medical applications (tissue engineering, wound dressings, etc.) and agricultural fields.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1459 - 1468"},"PeriodicalIF":4.7,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423331","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

Melanin from Pecan Nut Shell Waste as an Antioxidant and Antifungal Additive in Membranes for Food Packaging

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2025-01-08 DOI: 10.1007/s10924-025-03492-w

Michell García-García, Domancar Orona-Tamayo, Anayansi Estrada-Monje, Elizabeth Quintana-Rodríguez, Ricardo Navarro-Mendoza, Liliana Hernández-Perales, Nancy Edith Lozoya-Perez, Jesús Salvador Jaime-Ferrer

{"title":"Melanin from Pecan Nut Shell Waste as an Antioxidant and Antifungal Additive in Membranes for Food Packaging","authors":"Michell García-García, Domancar Orona-Tamayo, Anayansi Estrada-Monje, Elizabeth Quintana-Rodríguez, Ricardo Navarro-Mendoza, Liliana Hernández-Perales, Nancy Edith Lozoya-Perez, Jesús Salvador Jaime-Ferrer","doi":"10.1007/s10924-025-03492-w","DOIUrl":"10.1007/s10924-025-03492-w","url":null,"abstract":"<div><p>The increasing global demand for sustainable and effective food preservation methods has prompted the development of novel technology. The utilization of biomass generates valuable compounds that can be applied in innovative technologies like next-generation packaging, thereby enhancing environmental quality through the recycling of materials previously considered as waste. In this study, melanin was isolated from Pecan nut shells (<i>Carya illinoensis</i> Koch), with an optimized extraction process that enables the extraction of around 88 g of melanin per kilogram of Pecan shells. Melanin was electrospun with concentrations of 1.0 and 3.0 wt% using a hybrid mixture of polycaprolactone (PCL) and gelatin (Gel). Polycaprolactone-gelatin (PG)/melanin membranes showed an antioxidant capacity associated with efficient behavior as a hydrogen atom donor. The presence of -OH functional groups and catecholic compounds in melanin allows interaction with water molecules, enabling the transition from highly hydrophobic to hydrophilic behavior. Additionally, fibers showed antifungal activity against three phytopathogenic fungal strains isolated from commercial strawberries (<i>Fragaria</i> x <i>ananassa</i> L.) due to the release of H<sub>2</sub>O<sub>2</sub> from the oxidation of catechols. All these active properties are intended to be used in food packaging.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1469 - 1490"},"PeriodicalIF":4.7,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423330","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

The Physicochemical Changes of Cellulose Hydrolyzed with HCl Vapor after Pretreatment with FeCl3

IF 4.7 3区工程技术

Journal of Polymers and the Environment Pub Date : 2025-01-07 DOI: 10.1007/s10924-025-03494-8

Herman Marius Zendrato, Nanang Masruchin, Siti Nikmatin, Nam Hun Kim, Seung Hwan Lee, Nyoman Jaya Wistara

{"title":"The Physicochemical Changes of Cellulose Hydrolyzed with HCl Vapor after Pretreatment with FeCl3","authors":"Herman Marius Zendrato, Nanang Masruchin, Siti Nikmatin, Nam Hun Kim, Seung Hwan Lee, Nyoman Jaya Wistara","doi":"10.1007/s10924-025-03494-8","DOIUrl":"10.1007/s10924-025-03494-8","url":null,"abstract":"<div><p>Improving the accessibility of cellulose is essential for the production of derivative products. This can be achieved by modifying its physicochemical properties. This research aimed to investigate the properties of cellulose extracted from the torch ginger stem. The cellulose was pretreated with FeCl<sub>3</sub> and then hydrolyzed using HCl vapor at a 37% concentration. Hydrolysis was conducted in a pressurized HCl vapor system at 27.60 kPa and 30 °C for 0–24 h. Similar treatment was conducted to cellulose without FeCl<sub>3</sub> (unpretreated). The results show that FeCl<sub>3</sub> pretreatment significantly decreased degree of polymerization (DP) from 0 to 24 h compared to unpretreated cellulose. The hydrolysis reaction occurred above the saturation point of HCl. When the cellulose was hydrolyzed with HCl vapor, cellulose morphology, thermal properties, and functional groups remained largely unchanged, respectively, as observed by FESEM, TGA, and FTIR methods. However, the X-ray diffractograms and FTIR spectra revealed that decrystallization of FeCl<sub>3</sub> pretreated cellulose occurred after 10 h of hydrolysis. The 24 h hydrolysis yield for FeCl<sub>3</sub> unpretreated and pretreated cellulose was 90.6% (DP of 118) and 86.8% (DP of 76), respectively. Therefore, this hydrolysis system can be considered an important pretreatment method for preparing cellulose derivatives.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1403 - 1422"},"PeriodicalIF":4.7,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423278","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