Macromolecular Materials and Engineering最新文献_第2页

Recycled PET Packaging Materials of Improved Toughness— Importance of Devitrification of the Rigid Amorphous Fraction

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-12-04 DOI: 10.1002/mame.202400219

Ferenc Ronkay, Dániel Gere, Emese Slezák, Edina Szabó, György Marosi, Katalin Bocz

{"title":"Recycled PET Packaging Materials of Improved Toughness— Importance of Devitrification of the Rigid Amorphous Fraction","authors":"Ferenc Ronkay, Dániel Gere, Emese Slezák, Edina Szabó, György Marosi, Katalin Bocz","doi":"10.1002/mame.202400219","DOIUrl":"https://doi.org/10.1002/mame.202400219","url":null,"abstract":"Degradation, a common problem faced during the processing of recycled poly(ethylene terephthalate) (PET), leads to significant embrittlement of the products, as a result of which the material loses its applicability. Increased crystallization rate of the short chains of recycled PET and obstructed mobility of the amorphous phase are the main causes of enhanced brittleness. In this research, a straightforward method is proposed for improving the toughness of recycled PET products, namely the devitrification of the rigid amorphous phase by thermal annealing, which results in enhanced molecular mobility in the amorphous fraction, thereby promoting ductile deformation. The effects of thermal annealing conditions are comprehensively evaluated on the microstructure and macroscopic properties, i.e., impact resistance, of recycled PET films. The perforation energy value of the recycled PET film is found to increase to its threefold, reaching a value higher than 18 J mm−1, as a result of 10 s thermal treatment at 120 °C. Differential scanning calorimetry, dynamic mechanical analyses, and thermally stimulated depolarization current measurements provide evidence for the devitrification of the rigid amorphous fraction under these conditions, which is the key to efficient enhancement in toughness.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400219","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404639","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}

引用次数: 0

Exploiting Response Surface Methodology to Engineer the Mechanical Properties of Alginate-based Hydrogels

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-12-02 DOI: 10.1002/mame.202400296

Alessio Bucciarelli, Chen Zhao, Xue Bai, Rebekah Kay, Ayşe Latif, Kaye J. Williams, Annalisa Tirella

{"title":"Exploiting Response Surface Methodology to Engineer the Mechanical Properties of Alginate-based Hydrogels","authors":"Alessio Bucciarelli, Chen Zhao, Xue Bai, Rebekah Kay, Ayşe Latif, Kaye J. Williams, Annalisa Tirella","doi":"10.1002/mame.202400296","DOIUrl":"https://doi.org/10.1002/mame.202400296","url":null,"abstract":"Engineering human tissue microenvironments that recapitulate the composition and biomechanics of extracellular matrix (ECM) in vitro is challenging. New mechanically tunable alginate-based hydrogels are presented, enabling to precise model multiple ECM features in the context of breast cancer. Combining alginate, oxidized alginate (OA), and gelatin with different crosslinking strategies a library of mechanically controlled hydrogels supporting human cell growth (MDA-MB-231) is obtained. The compressive moduli and stability of alginate-based hydrogels are characterized and modeled using a response surface methodology (RSM); this enables to selection of precision-hydrogels decoupling their biochemical composition with mechanical properties (1–30 kPa). Specific alginate-based hydrogels are selected as enhanced technologies to model breast-specific microenvironments in vitro to study the impact of biomechanical and biochemical properties on cell behavior. Doxorubicin is selected as a model drug and as first-line treatment for breast cancer to investigate the correlation between drug efficacy and breast tumor ECM stiffness. Results demonstrate that doxorubicin is less effective (EC50 0.495 µm vs EC50 0.189 µm) in cells cultured in softer hydrogels (6.9 kPa) than in stiffer (21.0 kPa). In the context of breast cancer, engineered hydrogels prove valuable technologies to model tissue-specific ECM in vitro for biological studies, advancing understanding of therapeutic response and resistance.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400296","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404270","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}

引用次数: 0

Harnessing Nature-Derived Sustainable Materials for Electrochemical Energy Storage: Unveiling the Mechanism and Applications

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-11-30 DOI: 10.1002/mame.202400129

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":"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.","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}

引用次数: 0

Enhancing Sensitivity of Piezoresistive Pressure Sensor at Low Pressures Using Photo-Sensitive Resin Plate as Flexible Substrate

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-11-30 DOI: 10.1002/mame.202400237

Ferdos Akrami, Samaneh Hamedi

{"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":"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 × 106 kPa−1 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−1 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.","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}

引用次数: 0

The Effect of Reprocessing and Moisture on Polyamide Recycling: A Focus on Neat, Composites, and Blends

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-11-30 DOI: 10.1002/mame.202400304

Johanna Morales, Denis Rodrigue

引用次数: 0

Electroconductive Gelatin/Alginate/ Graphene Hydrogel Based Scaffold for Neural Tissue Repair

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-11-27 DOI: 10.1002/mame.202400229

Pegah Madaninasab, Mahshid Mohammadi, Sheyda Labbaf

{"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":"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 × 10−7 ± 0.01 S cm−1 to 7.644 × 10−4 ± 0.04 S cm−1. 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.","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}

引用次数: 0

MOFs and MOF-Based Composites for the Adsorptive Removal of Ciprofloxacin

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-11-27 DOI: 10.1002/mame.202400238

Sriyanjali Bathula, Swathi Thottathil, Yashoda Malgar Puttaiahgowda

{"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":"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 π–π 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.","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}

引用次数: 0

Rhodamine B-Modified Nanocrystalline Cellulose as Fluorescent Sensor for Fe3+ Ion Detection

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-11-20 DOI: 10.1002/mame.202400285

Marzieh Golshan, Behnam Gheitarani, Seyedeh-Arefeh Safavi-Mirmahalleh, Mehdi Salami-Kalajahi

{"title":"Rhodamine B-Modified Nanocrystalline Cellulose as Fluorescent Sensor for Fe3+ Ion Detection","authors":"Marzieh Golshan, Behnam Gheitarani, Seyedeh-Arefeh Safavi-Mirmahalleh, Mehdi Salami-Kalajahi","doi":"10.1002/mame.202400285","DOIUrl":"https://doi.org/10.1002/mame.202400285","url":null,"abstract":"Iron is crucial for various biological processes in humans, animals, and plants, making precise and efficient monitoring of iron ion concentrations essential. To address this need, a cellulose-based smart fluorescent material (NCC@NH2@RB) with a conjugated structure is designed and synthesized for the rapid and sensitive detection of Fe3+ ions. This sensor features core-shell nanoparticles functionalized with rhodamine B (RB), using (3-aminopropyl)triethoxysilane (APTES) as a linker. The resulting fluorescent probe, composed of nanocrystalline cellulose and RB, exhibits strong fluorescence under ultraviolet light, making it an effective tool for Fe3+ ion detection in water. When Fe3+ ions are introduced into a solution containing NCC@NH2@RB, they bind with weak-field ligands such as nitrogen and oxygen in the probe's structure, forming complexes. This interaction involves high-spin coordination and leads to the self-assembly of Fe3+ ions on the surface of NCC@NH2@RB. The process generates single electrons, increasing paramagnetism and quenching the fluorescence. The NCC@NH2@RB fluorescent probe has a limit of detection (LOD) of 0.01 µM and a limit of quantification (LOQ) of 0.03 µM with linearity at concentrations of 1.0 × 10−4–2.5 × 10−3 m. This fluorescence quenching effect is specific to Fe3+ ions, ensuring that the probe remains unaffected by other metal ions.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400285","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404814","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}

引用次数: 0

Electroplating on Electrically Conductive Filaments for Additive Manufacturing

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-11-19 DOI: 10.1002/mame.202400272

Claudia Eßbach, Wolfgang Förster, Dirk Fischer, Dagmar Dietrich, Peter Neumann, Daniela Nickel

引用次数: 0

Investigation of Release Kinetics of DOX from Polydopamine Nanocapsules Prepared by Hard Template Method

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-11-18 DOI: 10.1002/mame.202400261

Elahe Abdollahi, Vahid Haddadi-Asl, Hanie Ahmadi, Mastoure Shirjandi, Fatemeh Khanipour

{"title":"Investigation of Release Kinetics of DOX from Polydopamine Nanocapsules Prepared by Hard Template Method","authors":"Elahe Abdollahi, Vahid Haddadi-Asl, Hanie Ahmadi, Mastoure Shirjandi, Fatemeh Khanipour","doi":"10.1002/mame.202400261","DOIUrl":"https://doi.org/10.1002/mame.202400261","url":null,"abstract":"Development of smart drug delivery systems (DDSs) for effective delivering drugs to targeted areas and achieving controlled drug release (CDR) is critical for cancer chemotherapy. The purpose of this study is synthesis of polydopamine (PDA) nanocapsules and analyze the adsorption and release properties of doxorubicin (DOX). PDA nanocapsules are manufactured using hard template approach. The influence of various parameters such as pH, adsorption time, and initial DOX content on the adsorption and release process is investigated. The resulting adsorption isotherm is consistent with the Langmuir isotherm, indicating that DOX adsorption on PDA nanocapsules is homogenous, uniform, and monolayer. PDA nanocapsules have an adsorption capacity of 689.6 mg g−1 under alkaline conditions, which is attributed to phenol group deprotonation mechanism and electrostatic repulsion. The adsorption kinetics are more consistent with the pseudo-second-order model. Furthermore, raising initial concentration of DOX results in a greatly increased adsorption capacity due to a larger driving force. Among the several parameters that can influence the pace and degree of DOX loading and release, local pH is regarded as a significant environmental component in the processes. Thus, pH-responsive PDA nanocapsules have a significant potential for usage in locations with aberrant pH level, such as cancer tissue.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400261","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116072","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}

引用次数: 0