Macromolecular Chemistry and Physics最新文献_第2页

The Use of Biodegradable Poly(ε-Caprolactone) as a Matrix for Preparing Micro-Composites with NdFeB Recycled Magnetic Particles 以可生物降解聚ε-己内酯为基体制备钕铁硼再生磁性微粒微复合材料

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-04-14 DOI: 10.1002/macp.202500074

Eider Matxinandiarena, Agurtzane Mugica, Manuela Zubitur, Romane Trouillet, Souad Ammar, Alejandro J. Müller

{"title":"The Use of Biodegradable Poly(ε-Caprolactone) as a Matrix for Preparing Micro-Composites with NdFeB Recycled Magnetic Particles","authors":"Eider Matxinandiarena, Agurtzane Mugica, Manuela Zubitur, Romane Trouillet, Souad Ammar, Alejandro J. Müller","doi":"10.1002/macp.202500074","DOIUrl":"https://doi.org/10.1002/macp.202500074","url":null,"abstract":"Neodymium-iron-boron (NdFeB) magnets are essential because they show optimized magnetic properties for clean energy applications. They suffer nevertheless from their rare earth mine security of supply. The European Union considers them as key materials, encouraging their recycling to reduce the supply dependence on other countries. In this work, biodegradable poly(ε-caprolactone) (PCL) is used to obtain PCL/NdFeB micro-composites, with recycled NdFeB loadings of 0.25, 0.50, 0.75, 1.00, and 5.00 wt.%. Three different preparation techniques are employed: “melt mixing,” “solution-mixing,” and “solution mixing and precipitation.” The crystallization behavior is studied by Differential Scanning Calorimetry (DSC) and morphology by Polarized Light Optical Microscopy (PLOM) and Phase Contrast Microscopy (PCM). Non-isothermal and isothermal DSC experiments showed that the nucleation effect of NdFeB magnetic micro-particles on PCL is more effective in the case of micro-composites prepared by “solution and precipitation”. Non-isothermal experiments evidenced the largest increase in the crystallization temperature, while the isothermal experiments showed the highest acceleration in the overall crystallization rate for the samples prepared by “solution and precipitation”. Besides, self-nucleation tests confirmed these samples' most significant increase in nucleation efficiency. Finally, the nucleation effect of NdFeB micro-particles on PCL is also proven by the reduction in spherulitic size observed after NdFeB particle incorporation.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Synergistic Double-Layer Mechanochromic Polymers for Enhanced Strain Sensing and Emission Control 增强应变传感和发射控制的协同双层机械致变色聚合物

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-04-08 DOI: 10.1002/macp.202500060

Luca Soldati, Cosimo Micheletti, Carlo Adamo, Andrea Pucci, Marco Carlotti

{"title":"Synergistic Double-Layer Mechanochromic Polymers for Enhanced Strain Sensing and Emission Control","authors":"Luca Soldati, Cosimo Micheletti, Carlo Adamo, Andrea Pucci, Marco Carlotti","doi":"10.1002/macp.202500060","DOIUrl":"https://doi.org/10.1002/macp.202500060","url":null,"abstract":"The development of mechanochromic polymers offers transformative potential for applications requiring real-time stress sensing and emission control. This study presents a novel double-layer polymer system that synergistically combines a high-quantum-yield fluorophore-based emissive layer and a perylene bisimide-derived optical filter layer to achieve exceptional mechanochromic performance. The emissive layer utilizes pyrene-functionalized polyolefins to produce a strain-induced fluorescence shift, while the optical filter modulates emission intensity through absorption and dilution effects upon deformation. Comprehensive optical and mechanical characterization reveals that the combination of poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS)-based filters with poly(ethylene-co-octene) functionalized with 1-Pyrenemethylamine (POE-g-AMP) emissive layers delivers the most pronounced strain-dependent fluorescence enhancement, achieving a 120% increase in emission intensity at 250% elongation. This work overcomes traditional limitations in mechanophore adoption by utilizing cost-effective materials and scalable processing techniques. The proposed system demonstrates sensitivity and versatility, paving the way for innovative applications in structural health monitoring, wearable sensors, and dynamic design materials.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 12","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144339090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Charge Regulation Stabilizes the Formation of Ionic Liquid-Based Amphiphilic Oligomer Droplet Interface Bilayers 电荷调节稳定离子液体基两亲性低聚物液滴界面双层的形成

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-04-08 DOI: 10.1002/macp.202400337

Zening Liu, Graham J. Taylor, Yingdong Luo, Kunlun Hong, Robert L. Sacci, John Katsaras, Jan-Michael Carrillo, Benjamin Doughty, Charles Patrick Collier

{"title":"Charge Regulation Stabilizes the Formation of Ionic Liquid-Based Amphiphilic Oligomer Droplet Interface Bilayers","authors":"Zening Liu, Graham J. Taylor, Yingdong Luo, Kunlun Hong, Robert L. Sacci, John Katsaras, Jan-Michael Carrillo, Benjamin Doughty, Charles Patrick Collier","doi":"10.1002/macp.202400337","DOIUrl":"https://doi.org/10.1002/macp.202400337","url":null,"abstract":"Amphiphilic charged oligomers (oligodimethylsiloxane – methylimidazolium cation, ODMS-MIM (+)), assemble into bilayers using the droplet interface bilayer (DIB) platform, possess similar size and functionality as phospholipid bilayers, but exhibit increased stability. The oligomer ionic headgroups (MIM(+)) are covalently bound to monodisperse, short-chain (n = 13) hydrophobic tails (ODMS). These self-assemble as monolayer brushes at the oil–aqueous interface of water droplets that are influenced by both the charged cationic headgroups, and the nature of the covalently attached tails in the organic phase. Charge regulation (CR) stabilizes the formation of ordered, molecularly close-packed brush phases, which results in highly insulating, stable DIB membranes, with contributions from specific ion-pairing effects, Debye screening, and voltage-dependent electrocompressive stresses. In the oil phase, interactions between hexadecane, a good solvent for ODMS, and the hydrophobic tails result in extended waiting times for bilayer formation compared to phospholipid DIBs, for which hexadecane is a poor solvent. Close agreement between experimental values and predictions for two key parameters, the critical membrane thickness, hc, and maximal grafted headgroup density, Γ0, validate an electrostatic CR model consisting of adsorption and partial neutralization of counterions at a charged interface.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 12","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202400337","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144339091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Synthesis of Poly(vinyl acetate)-Based Block Copolymers for Highly Stretchable Film by Troponoid-Mediated Radical Emulsion Polymerization troponidas介导自由基乳液聚合合成高拉伸膜用聚醋酸乙烯基嵌段共聚物

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-04-07 DOI: 10.1002/macp.202400519

I-Hsiang Chang, Edeline Clarissa Adhidjaja, Chi-How Peng

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Biradical Initiation in Photoinitiated Copolymerization of Styrene and Maleic Anhydride 苯乙烯与马来酸酐光引发共聚的双自由基引发

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-04-04 DOI: 10.1002/macp.202570014

Michael-Phillip Smith, Chané Calitz, Upenyu L. Muza, Albena Lederer, Catharine Esterhuysen, Bert Klumperman

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Issue Information: Macromol. Chem. Phys. 7/2025 发布信息：Macromol。化学。理论物理的7/2025

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-04-04 DOI: 10.1002/macp.202570015

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In Memory of Professor Yusuf Yagci 纪念Yusuf Yagci教授

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-04-04 DOI: 10.1002/macp.202500087

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Nanoarchitectonics of Polymers at Interfaces 界面上聚合物的纳米结构

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-04-02 DOI: 10.1002/macp.202500048

Katsuhiko Ariga

{"title":"Nanoarchitectonics of Polymers at Interfaces","authors":"Katsuhiko Ariga","doi":"10.1002/macp.202500048","DOIUrl":"https://doi.org/10.1002/macp.202500048","url":null,"abstract":"The field of materials science is of paramount importance in the solution to societal issues, including energy, environmental, and biomedical problems. Polymer chemistry is a leading material science that has produced a number of practical materials. The development of nanotechnology for the control of ultrasmall structures and interface technology for the organization of polymer components has both made significant contributions to this field. This review, entitled “Nanoarchitectonics of Polymers at Interfaces,” focuses on nanoarchitectonics and interface technologies to examine recent research trends on the design of functional polymeric materials. Three interface technologies are especially considered: i) the Langmuir–Blodgett (LB) technique, which allows for the orientation and hybridization of polymers at interfaces; ii) layer-by-layer (LbL) assembly, which allows for the construction of rational layered structures from polymers and other materials; and iii) on-surface synthesis, which uses nanotechnology to perform nanoarchitectonics of polymers on surfaces. The final section of the review discusses the trends and necessary future directions in “Nanoarchitectonics of Polymers at Interfaces” based on these research examples.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202500048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Evaluating Polymerization Methods and Deprotection Strategies for Making Water Soluble Poly(acrylic acid) with Hydrolyzable Breaking Points 制备具有可水解断裂点的水溶性聚丙烯酸的聚合方法及脱保护策略的评价

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-04-02 DOI: 10.1002/macp.202500080

Sophia B. Däbritz, Kira Neubauer, Christian Kropf, Seema Agarwal

{"title":"Evaluating Polymerization Methods and Deprotection Strategies for Making Water Soluble Poly(acrylic acid) with Hydrolyzable Breaking Points","authors":"Sophia B. Däbritz, Kira Neubauer, Christian Kropf, Seema Agarwal","doi":"10.1002/macp.202500080","DOIUrl":"https://doi.org/10.1002/macp.202500080","url":null,"abstract":"Poly(acrylic acid) (PAA) is a hydrophilic polymer widely utilized in various everyday applications, but it may persist in the environment due to its stable carbon-carbon (C-C) backbone. This work presents a detailed comparative study of introducing hydrolyzable ester breaking points into the PAA backbone using different radical copolymerization methods (bulk versus solvent and batch versus semi-batch) with varied feed ratios of tert-butyl acrylate (tBA) and 2-methylene-1,3-dioxepane (MDO) followed by the investigation of the removal of t-Bu group for getting free acid functionality in copolymers under different conditions. A detailed comparison of polymerization approaches (bulk versus solution, batch versus semi-batch) revealed that solution polymerization at 100 °C with tert-butyl peroxide provided high ring-opening efficiency (71%) and uniform molecular weight distribution. The study optimized deprotection processes for tBA to acrylic acid, achieving complete hydrolysis under mild conditions using 5 equivalents of trifluoroacetic acid in dichloromethane. The resultant polymers displayed pH and temperature dependent solubility and significant degradation under alkaline conditions, with the formation of oligomers (400–700 Da for 35% MDO content) suitable for microbial assimilation. These findings highlight a scalable pathway for creating environmentally degradable PAA alternatives with tailored properties for functional applications.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202500080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Strong and Ultra-Tough Bio-Based Waterborne Polyurethane Networks with Repairability, Recyclability, and Tunable Multi-Shape Memory 具有可修复性、可回收性和可调多形状记忆的强而坚韧的生物基水性聚氨酯网络

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-03-29 DOI: 10.1002/macp.202500016

Ping Zhang, Xiaoxun Xu, Zilong Cao, Po Hu, Yebin Guan, Xie Wang, Junwei Wang, Shengjue Deng, Jiajun Fu

{"title":"Strong and Ultra-Tough Bio-Based Waterborne Polyurethane Networks with Repairability, Recyclability, and Tunable Multi-Shape Memory","authors":"Ping Zhang, Xiaoxun Xu, Zilong Cao, Po Hu, Yebin Guan, Xie Wang, Junwei Wang, Shengjue Deng, Jiajun Fu","doi":"10.1002/macp.202500016","DOIUrl":"https://doi.org/10.1002/macp.202500016","url":null,"abstract":"Waterborne polyurethanes (WPUs) attract significant attention for their versatility across various fields, yet optimizing both high strength and toughness remains a challenge. This study successfully develops an ultra-tough bio-based WPUs by regulating non-covalent interactions (hydrogen bonds and electrostatic interactions) and precise cross-linking. The WPUs are synthesized using 2,2-dimethylolpropionic acid (DMPA), castor oil (CO), poly(tetramethylene ether glycol) (PTMG), isophorone diisocyanate (IPDI), and ethylenediamine (EDA) as raw materials, constructing a network structure rich in hydrogen bonds and electrostatic interactions. The resulting material exhibits outstanding mechanical properties, including high tensile strength (15.91 MPa), Young's modulus (98.36 MPa), and toughness (107.65 MJ m−3), while also demonstrating good repairability, processability, and excellent shape memory capabilities. These well-designed non-covalent interactions provide an effective strategy for designing bio-based WPUs with superior comprehensive performance.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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