Naman Sharma, Kirti Mishra, Nirankar Singh, Samarjeet Singh Siwal, Phil Hart, Vijay Kumar Thakur
{"title":"Harnessing Nature-Derived Sustainable Materials for Electrochemical Energy Storage: Unveiling the Mechanism and Applications","authors":"Naman Sharma, Kirti Mishra, Nirankar Singh, Samarjeet Singh Siwal, Phil Hart, Vijay Kumar Thakur","doi":"10.1002/mame.202400129","DOIUrl":"https://doi.org/10.1002/mame.202400129","url":null,"abstract":"<p>Recently, research all over the world is being carried out to develop eco-friendly supercapacitors (SCs) using biopolymeric materials like proteins or polysaccharides. These polymers offer these innovative energy storage devices' sustainability and recyclability, flexibility, lightweight, and steady cycling performance—all crucial for utilizations involving wearable electronics and others. Given its abundance and extensive recycling behavior, cellulose is one of the most sustainable natural polymers requiring special attention. The paper discusses the various types of cellulose-based materials (CBMs), including nanocellulose, cellulose derivatives, and composites, as well as their synthesis methods and electrochemical properties. The review also highlights the performance of CBMs in SC applications, including their capacitance, cycling stability, and rate capability, along with recent advances in modifying the materials, such as surface modification and hybrid materials. Finally, the proposed topic is concluded with the current challenges and future prospects of CBMs for SC applications.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400129","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhancing Sensitivity of Piezoresistive Pressure Sensor at Low Pressures Using Photo-Sensitive Resin Plate as Flexible Substrate","authors":"Ferdos Akrami, Samaneh Hamedi","doi":"10.1002/mame.202400237","DOIUrl":"https://doi.org/10.1002/mame.202400237","url":null,"abstract":"<p>In this paper, flexible highly sensitive piezoresistive pressure sensors for low compressive stress detection (9.8 Pa to 10.7 kPa) are proposed, by using Photo-Sensitive Resin Plate (PSRP). The photolithography method is employed to create the micro-dome structure pattern on PSRP. Finally, the active parts of the sensors are made by depositing a thin layer of silver (Ag), as the sensing element, on the micro-dome patterns. Herein, the effect of three different surface pattern dimensions as well as two different thicknesses of the Ag layer on sensor sensitivity are evaluated. The sensor fabricated with a diameter of 300 µm for micro-dome structure, and 70 nm for the thickness of Ag layer demonstrated ultrahigh sensitivity of 29343 and 5 × 10<sup>6</sup> kPa<sup>−1</sup> in the pressure ranges of 0.2–5 and 5–10.7 kPa, respectively. The sensor with a diameter of 300 µm for micro-domes and an Ag-thickness layer of 100 nm has a low working voltage of 0.1 V, a high sensitivity of 223.69 kPa<sup>−1</sup> in the pressure range <0.11 kPa, and lowest limit of detection 9.8 Pa. The response and recovery times of this sensor are 270 and 60 ms, respectively. Furthermore, the sensor maintained high and stable performance over a 17-min period.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400237","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Effect of Reprocessing and Moisture on Polyamide Recycling: A Focus on Neat, Composites, and Blends","authors":"Johanna Morales, Denis Rodrigue","doi":"10.1002/mame.202400304","DOIUrl":"https://doi.org/10.1002/mame.202400304","url":null,"abstract":"<p>Polyamides (PA), commercially known as Nylon, are versatile engineering thermoplastics extensively used in different industries due to their thermal, and chemical resistance and excellent mechanical properties. Although polyamide recycling has received significant attention due to increasing demand for sustainable practices, it is important to understand the effect of the different factors involved in the mechanical recycling of this polymer. The initial part of this review presents an overview of the PA in the industry, its classification, properties, and applications. Following this, the effects of reprocessing cycles are examined, concluding with the impact of moisture before and after the recycling of polyamides. This review not only focuses on the recycling of PA 6 and PA 66 but also includes other grades, such as PA 11 and PA 12. Additionally, it covers the recycling of PA blends and composites.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400304","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Saeed Ismaeilimoghadam, Bahareh Azimi, Mehdi Jonoobi, Serena Danti
{"title":"Highly Performing Polysaccharide Hydrogels can Replace Acrylic Acid-Based Superabsorbent Polymers in Sanitary Napkins","authors":"Saeed Ismaeilimoghadam, Bahareh Azimi, Mehdi Jonoobi, Serena Danti","doi":"10.1002/mame.202400278","DOIUrl":"https://doi.org/10.1002/mame.202400278","url":null,"abstract":"<p>Super absorbent polymers (SAPs) used in sanitary napkin are not required for water absorption capacity as high as in baby diapers and adult incontinence pads. Sanitary napkins must absorb menses, which is delivered at a significantly lower rate and overall daily amount than urines. Thus, the acrylic acid (AA) component can not be strictly necessary. By proper formulation design and processing, polysaccharide SAPs can be equally or even better performing than AA-containing SAPs in sanitary napkins. Fully biodegradable sodium alginate (SA)-based SAPs are prepared through ionic cross-linking by CaCl<sub>2</sub> and introduced in female pads. The optimal solution concentrations (SA 8% w/v, CaCl<sub>2</sub> 0.25% w/v in water) and reaction time are identified, and addition of cellulose nanocrystals (CNC) at different weight contents (0–3 w%) is tested. Morphology, physico-chemical properties, rheology, free swelling capacity (FSC), centrifuge retention capacity, and weight loss in soil are assessed. Increasing CNC content decreases FSC. Rheology results demonstrate higher storage and loss moduli for SA-based SAPs versus commercial SAPs. The superior SA-SAP developed is used in varying amounts for manufacturing sanitary napkin prototypes, revealing that excellent menstrual fluid absorption, surpassing commercial pads. Replacing AA-based with polysaccharide-based SAPs would reduce the environmental impact of hygienic product waste.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 3","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400278","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electroconductive Gelatin/Alginate/ Graphene Hydrogel Based Scaffold for Neural Tissue Repair","authors":"Pegah Madaninasab, Mahshid Mohammadi, Sheyda Labbaf","doi":"10.1002/mame.202400229","DOIUrl":"https://doi.org/10.1002/mame.202400229","url":null,"abstract":"<p>A composite polymeric scaffold of gelatin/alginate /graphene is fabricated through freeze-drying technique. Initially, a hydrogel system comprised of gelatin/alginate (1:1) is prepared, and then the effect of different amounts of graphene carboxyl nanosheets (1,1.5, 2, and 2.5 wt.%) on the resultant structural properties are thoroughly evaluated. The swelling ratio, biodegradability, electrical and mechanical properties of bio-composite hydrogels are controlled by manipulating the concentration of graphene-COOH. The significant increase in the electrical conductivity is observed with the addition of 2.5% graphene-COOH, and the electrical conductivity increased from 8.525 × 10<sup>−7</sup> ± 0.01 S cm<sup>−1</sup> to 7.644 × 10<sup>−4</sup> ± 0.04 S cm<sup>−1</sup>. Also, the biocomposite hydrogels exhibited compressive and tensile strength ranging from 25 to 382 KPa and 11.4 to 148 KPa with an increase in the concentration of graphene-COOH. The simplicity, low cost, tunable mechanical properties, and optimal electrical conductivity of the hydrogel system presented in this study highlight its potential as nerve tissue replacement.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400229","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"MOFs and MOF-Based Composites for the Adsorptive Removal of Ciprofloxacin","authors":"Sriyanjali Bathula, Swathi Thottathil, Yashoda Malgar Puttaiahgowda","doi":"10.1002/mame.202400238","DOIUrl":"https://doi.org/10.1002/mame.202400238","url":null,"abstract":"<p>In spite of greater efforts to address antibiotic resistance, Ciprofloxacin (CIP) buildup in the aqueous medium continues to rise. The negative effects of CIP on the environment can be minimized through a comprehensive understanding of the technological advancements in removal techniques. The exploration of adsorbents like metal–organic frameworks (MOFs), activated carbon, porous organic polymers, etc., have found major usage in the adsorptive removal of antibiotics to tackle contamination. This study aims to compare the MOF-based adsorbents and provide a guide to developing such materials for the successful removal of CIP. The isotherm models of the adsorbents are studied using Langmuir, Freundlich, Temkin, and Sips isotherms. Furthermore, pseudo-second-order, pseudo-first order, intra-particle diffusion, and Elovich models are used to study the kinetic models. The major mechanisms of adsorption, such as <i>π</i>–<i>π</i> interactions, H-bonding, electrostatic interactions, hydrophobic interactions, and pore filling, are also analyzed. This study contributes to the future scope for the development of these MOFs for further exploration and applications in environmental remediation.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400238","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aniela J. K. Wright, Smita S. Dasari, Ramu Banavath, Sayyam Deshpande, Ethan M. Harkin, Kailash Arole, Anubhav Sarmah, Micah J. Green
{"title":"Evolution of Electrothermal Heating and Dielectric Properties of Phenolic Resins During Pyrolysis","authors":"Aniela J. K. Wright, Smita S. Dasari, Ramu Banavath, Sayyam Deshpande, Ethan M. Harkin, Kailash Arole, Anubhav Sarmah, Micah J. Green","doi":"10.1002/mame.202400311","DOIUrl":"https://doi.org/10.1002/mame.202400311","url":null,"abstract":"<p>Electrothermal heating generated via radio frequency (RF) fields is used to probe the transformation of phenolic resin to a carbon matrix during pyrolysis. Phenolic resin is a single-stage thermoset that is popular due to its heat resistance, chemical resistance, high strength, and low creep properties. When phenolic resin is subjected to high-temperature, low-oxygen treatment (pyrolysis), it is converted to a carbon material useful for many structural applications. Here, neat phenolic resin is pyrolyzed at different temperatures, and the heating response of the newly formed carbon material is tracked when exposed to an RF field. The electrical conductivity of the matrix increased with increasing pyrolysis temperature, with ≈10<sup>−4</sup> S m<sup>−1</sup> for the neat sample prior to pyrolysis, and ≈10<sup>2</sup> S m<sup>−1</sup> for the sample pyrolyzed at 850 °C. The material's electrothermal response to applied RF fields increases as the material pyrolyzes and becomes conductive; however, at high pyrolysis temperatures, the material becomes sufficiently conductive such that the RF fields are reflected rather than absorbed, and the heating response decreases. The findings of this work show that heating response to RF fields can be used as a quick and easy characterization technique for tracking structural changes associated with phenolic pyrolysis.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 3","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400311","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daewoo Han, Robert Horvath, Burcu Uner, Giovanni M. Pauletti, Andrew J. Steckl
{"title":"Skin-Compatible Carbopol Electrospun Fiber Membranes with pH-Dependent Rheological Properties for Biomedical Applications","authors":"Daewoo Han, Robert Horvath, Burcu Uner, Giovanni M. Pauletti, Andrew J. Steckl","doi":"10.1002/mame.202400335","DOIUrl":"https://doi.org/10.1002/mame.202400335","url":null,"abstract":"<p>Properties of pH-responsive electrospun nanofibers incorporated with biocompatible/degradable Carbopol, commonly used in pharmaceuticals and personal care products, are reported. Sonication of Carbopol dispersions prior to electrospinning leads to uniform incorporation into fibers of the host polymer polyvinylpyrrolidone. The hydration behavior is strongly influenced by pH conditions, forming a viscous network at higher pH. Since Carbopol is more responsive to higher pH, at pH > 6 increasing Carbopol concentration leads to increased uptake volume of buffer solution, faster uptake rate and complete gel formation. The physical spreadability (resulting from a combination of viscoelastic properties and the structural polymer network) of the hydrated fibers is evaluated for multiple Carbopol concentrations and pH conditions. At low starting pH of 4, increasing the Carbopol amount results in slightly increasing viscosity while maintain solution pH. On the other hand, at high starting pH of 8 increasing Carbopol concentrations result in significant reduction in the pH of the buffer solution, which in turn decreases the viscosity of the gel and increases its spreadability. These findings provide guidelines for rational designs of pH responsive Carbopol fibers for various applications, including drug delivery, wound dressing, contraceptive devices, and prevention of sexually transmitted diseases.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 3","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400335","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexandra Lupu, Maria Bercea, Mihaela Avadanei, Luiza Madalina Gradinaru, Loredana Elena Nita, Vasile Robert Gradinaru
{"title":"Temperature Sensitive Pluronic F127-Based Gels Incorporating Natural Therapeutic Agents","authors":"Alexandra Lupu, Maria Bercea, Mihaela Avadanei, Luiza Madalina Gradinaru, Loredana Elena Nita, Vasile Robert Gradinaru","doi":"10.1002/mame.202400341","DOIUrl":"https://doi.org/10.1002/mame.202400341","url":null,"abstract":"<p>Pluronic F127 copolymer is used as the main component to design injectable gels for therapeutic applications. Xanthan gum is added as an excipient to improve gel properties under physiological conditions. A polyphenol bioactive compound, curcumin, is selected as therapeutic agent with beneficial effects on metabolism and many diseases. The encapsulation efficiency and stability of formulations are investigated in an aqueous environment and in acetic acid solutions. The interactions between the hydrophobic polyphenol and the polymer matrix are investigated through rheology, DLS, and FTIR spectroscopy. The viscoelasticity of gels, correlated with the network structure, is influenced by xanthan gum or acetic acid addition. FTIR analysis of curcumin incorporated into the gel provides the evidence for interaction of the phenyl rings of both keto-enol and di-keto tautomers with the polymeric matrix. The spherical curcumin-encapsulated micelles provided antioxidant properties. The kinetics of curcumin release from the Pluronic F127-based gels suggests anomalous transport phenomena controlled by diffusion through the network and hydrodynamic effects. Both gel and lyophilized form of micellar encapsulated curcumin composites exhibited good stability for long-term storage under ambient conditions.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 4","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400341","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Victor S. Cecon, Mita Munshi, Shahnaz Mukta, Keith L. Vorst, Greg W. Curtzwiler
{"title":"Utilization of Ultrasonication as a Method of Reducing Organic and Inorganic Contamination in Post-Consumer Plastic Film Waste","authors":"Victor S. Cecon, Mita Munshi, Shahnaz Mukta, Keith L. Vorst, Greg W. Curtzwiler","doi":"10.1002/mame.202400310","DOIUrl":"https://doi.org/10.1002/mame.202400310","url":null,"abstract":"<p>Post-consumer plastic film waste often carries organic and inorganic contaminants that challenge recycling processes and affect the quality of recycled products. An effective contaminant removal procedure through washing such single-used plastic films (SUPFs) can address environmental and waste management concerns. This study compares the efficiency of different washing techniques in reducing SUPF contamination. To evaluate the efficacy of each washing technique, film samples collected from material recovery facilities are individually exposed to friction, ultrasonic-assisted, and a combination of both washes. Thermal analysis indicates that the polymers' melting temperature, crystallization temperature, and crystallinity remain unaffected by the washing methods, demonstrating method aptness. Confocal laser scanning microscope images show that washing results in a cleaner sample surface. 91% ash reduction during the combined wash treatment indicates a high method efficiency compared to the individual friction and ultrasonic wash procedures. This is further validated by reducing characteristic contaminant IR bands (3600–3000, 1750–1600, and 1100–1000 cm<sup>−1</sup>). Elements of concern such as Cd, Cr, Hg, and Pb in SUPFs after each washing technique applied conform with regulations (<100 ppm) for packaging products. This research shows the novel ultrasonic washing reduces more contamination than friction with shorter wash times and no surfactants.</p>","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 5","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400310","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}