Macromolecular Chemistry and Physics最新文献_第5页

Issue Information: Macromol. Chem. Phys. 2/2025

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-23 DOI: 10.1002/macp.202570004

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Synthesis and Properties of Biodegradable Copolyester with Phenyl Side Groups 带有苯基侧基的可生物降解共聚聚酯的合成与性能

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-21 DOI: 10.1002/macp.202400442

Tiejun Ge, Dalong Zhao, Xiaofeng Liu, Yang Yu, Xiaofeng He, Qi Yue, Wanrong Liu, Qunhe Sun

{"title":"Synthesis and Properties of Biodegradable Copolyester with Phenyl Side Groups","authors":"Tiejun Ge, Dalong Zhao, Xiaofeng Liu, Yang Yu, Xiaofeng He, Qi Yue, Wanrong Liu, Qunhe Sun","doi":"10.1002/macp.202400442","DOIUrl":"https://doi.org/10.1002/macp.202400442","url":null,"abstract":"Poly(butylene adipate terephthalate) (PBAT) is a biodegradable copolyester that has garnered significant attention in recent years. However, its application is limited by low tensile strength and elastic modulus. Current research focuses on copolymerization modifications aimed at enhancing PBAT's performance. In this study, a novel copolyester with phenyl side groups, poly(butylene-co-3-phenoxy-1,2-propylene adipate-co-terephthalate) (PBPAT), is synthesized via melt polycondensation. The impact of varying amounts of the fourth monomer, 3-phenoxy-1,2-propylene glycol (PPDO), on the copolyester's properties is investigated. FTIR and NMR spectroscopy confirm the structure and composition of PBPAT. The molecular weight, thermal properties, mechanical properties, processing characteristics, and hydrophilicity of the copolymers are comprehensively evaluated. The results indicate that PPDO does not affect the crystal structure of PBAT. However, the performance of PBPAT is significantly influenced by the PPDO content, which the optimal mechanical properties are achieved with 12.5% PPDO, demonstrating a tensile strength of 26.1 MPa and an elastic modulus of 220.6 MPa. Furthermore, PBPAT copolyesters exhibit high crystallinity, heat resistance, good hydrophilicity, and superior processability. The novel PBPAT copolyester offers enhanced performance characteristics and holds potential for replace commercial PBAT, thereby expanding the application scope of biodegradable materials.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689435","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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A Versatile Nonconventional Luminescent Material Based on Quaternary Ammonium Chitosan for Sodium Chlorite Detection and Cell Imaging 一种基于季铵盐壳聚糖的多功能非常规发光材料，可用于亚氯酸钠检测和细胞成像

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-16 DOI: 10.1002/macp.202400369

Chenjie Jiang, Chanming Mei, Linmin Zou, Yongyang Gong

{"title":"A Versatile Nonconventional Luminescent Material Based on Quaternary Ammonium Chitosan for Sodium Chlorite Detection and Cell Imaging","authors":"Chenjie Jiang, Chanming Mei, Linmin Zou, Yongyang Gong","doi":"10.1002/macp.202400369","DOIUrl":"https://doi.org/10.1002/macp.202400369","url":null,"abstract":"Nonconventional luminescent materials (NLMs) lacking extended π-conjugated systems present a burgeoning field with vast potential applications in cell image, and chemical sensing. This work explores the synthesis, characterization, and promising applications of a novel NLM quaternary ammonium chitosan (QCS), in bioimaging and selective chemical sensing where solutions exhibit remarkable tunability in their photophysical properties, influenced by concentration, excitation wavelength, and temperature. Notably, applying static pressure to the solid sample significantly enhances its luminous efficiency, rising from 2.15% to 2.59%, inducing a redshift in emission, emission shifting from 436 to 452 nm after the force action. Furthermore, QCS demonstrates a highly specific fluorescent response toward sodium chlorite (NaClO₂) with negligible interference from common cations and anions. The detection limit for NaClO₂ reaches a low 0.297 mg L−1, highlighting its potential for practical applications. Additionally, QCS exhibits excellent biocompatibility and low cytotoxicity, making it a compelling candidate for cellular imaging.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689096","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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Front Cover: Macromol. Chem. Phys. 1/2025

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-09 DOI: 10.1002/macp.202570001

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Issue Information: Macromol. Chem. Phys. 1/2025

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-09 DOI: 10.1002/macp.202570002

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Chain-Folding Effects on Polymer Film Gas Permeabilities

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-08 DOI: 10.1002/macp.202400329

Iris Agami, Orit Mendelson, Charles E. Diesendruck

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Controlled Release of a Hydrophobic Fluorescent Molecule From Polyvinyl Alcohol/Polycaprolactone Composite Thin Films

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-07 DOI: 10.1002/macp.202400318

Yuran Cheng, Mako Ishida, Shinji Takeoka

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Co-Polyamide with 2-Pyridylquinoline Moieties in the Main Chain and Its Metal-Polymer Complex with Cu(II) for Toluene Recovery: Synthesis, Structure, Physicochemical and Transport Properties

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-07 DOI: 10.1002/macp.202400178

Ilya Faykov, Alexandra Pulyalina, Ekaterina Gruzdeva, Alexander Novikov, Mikhail Goikhman, Irina Podeshvo, Nairi Loretsyan, Iosif Gofman, Ivan Abalov, Natalia Saprykina, Galina Polotskaya

{"title":"Co-Polyamide with 2-Pyridylquinoline Moieties in the Main Chain and Its Metal-Polymer Complex with Cu(II) for Toluene Recovery: Synthesis, Structure, Physicochemical and Transport Properties","authors":"Ilya Faykov, Alexandra Pulyalina, Ekaterina Gruzdeva, Alexander Novikov, Mikhail Goikhman, Irina Podeshvo, Nairi Loretsyan, Iosif Gofman, Ivan Abalov, Natalia Saprykina, Galina Polotskaya","doi":"10.1002/macp.202400178","DOIUrl":"https://doi.org/10.1002/macp.202400178","url":null,"abstract":"Currently, recovery of organic solvents using eco-friendly methods is one of the primary industrial tasks. Separation of liquid media by pervaporation offers more advantages as compared to conventional purification methods, such as distillation, in view of low energy and resource consumption. This work is focused on the study of novel copolyamide with 2-pyridylquinoline-4,7-dicarboxylic acid moieties in the main chain and its metal-polymer complex in the form of dense films. At present, metal-polymer complexes are growing in importance among membranes. The analysis of mechanical and thermal properties of the films also supports their high operational characteristics. Comprehensive studies of the structure of the obtained films show that both samples have a rigid and dense structure, but the metal-polymer complex is characterized by an increased surface roughness. The hypothesis of supramolecular association between polymers and separated liquids (methanol and toluene) is confirmed by quantum chemical calculations. Transport properties of novel polymers in pervaporation of toluene/methanol mixtures are examined and compared with the literature data. Both polymer films demonstrate an outstanding selectivity toward toluene in the separation of binary mixtures. The developed films have higher values of total flux and separation factor as compared to the most of known membranes.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143555039","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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Specific Anion Effects on the Growth and Stability of Poly (2-Ethyl-2-Oxazoline)/Tannic Acid Layer by Layer Films

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-31 DOI: 10.1002/macp.202400324

Elda Beruhil Bahar Adatoz, A. Levent Demirel

{"title":"Specific Anion Effects on the Growth and Stability of Poly (2-Ethyl-2-Oxazoline)/Tannic Acid Layer by Layer Films","authors":"Elda Beruhil Bahar Adatoz, A. Levent Demirel","doi":"10.1002/macp.202400324","DOIUrl":"https://doi.org/10.1002/macp.202400324","url":null,"abstract":"The control of pH responsiveness of hydrogen-bonded (H-bonded) layer-by-layer films is especially important in biomedical applications. Specific anion effects are known to vary the cloud point temperature of poly(2-ethyl-2-oxazoline) (PEOX) solutions. By growing H-bonded multilayers of PEOX and Tannic Acid (TA) in the presence of nine different sodium salts at different salt concentrations, it is shown that the growth profile and pH stability of the multilayers can be controlled in a wide range. The observed changes in the average bilayer (BL) thickness and critical disintegration pH are in accordance with the Hofmeister series of anions. Going from the most kosmotropic (Na2CO3) to the most chaotropic (NaSCN), BL thickness decreases by ≈11.5 nm while the critical disintegration pH increases up to 10. Conformational variations in PEOX chains from compact coils due to dehydration by kosmotropic anions to extended chains due to direct ion binding of chaotropic anions contribute to these changes. ITC investigation of PEOX/TA interaction in the presence of sodium salts in solution confirms the enhanced stability in the direction of the most chaotropic anion. The results clearly show that properties of H-bonded multilayers can be easily tuned by specific anion effects as desired by applications.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770605","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}

引用次数: 0

Crystal Hydrogel-Based Switchable Radiative Cooling Materials for Smart Windows

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2024-12-31 DOI: 10.1002/macp.202400394

Zhuangsen Zhang, Xiaozhuang Zhou, Qianwei Liu, Xinhong Xiong, Jiaxi Cui

{"title":"Crystal Hydrogel-Based Switchable Radiative Cooling Materials for Smart Windows","authors":"Zhuangsen Zhang, Xiaozhuang Zhou, Qianwei Liu, Xinhong Xiong, Jiaxi Cui","doi":"10.1002/macp.202400394","DOIUrl":"https://doi.org/10.1002/macp.202400394","url":null,"abstract":"Smart windows can effectively balance the space temperature of buildings without compromising the essential functions of windows. However, conventional thermochromic windows have limited sunlight regulation capabilities and face challenges with switching as desired. Herein, A class of novel smart windows based on crystal hydrogels is introduced that achieve free switching between transparent (for heating) and opaque (for radiative cooling) states through thermal and mechanical stimuli. The crystal hydrogels are made from cross-linked polyacrylamide (PAM) and sodium acetate (NaAc). By optimizing the sodium acetate concentration and sample thickness, The combination of excellent cooling ability is achieved at the opaque state and good low-temperature stability at the transparent state in the hydrogels. Using the optimized hydrogel to prepare a smart window equipped with a heater and a mechanical trigger tip, the rapid on-demand transition between transparent and opaque states is demonstrated. The results indicate that the smart window lowers temperatures by up to 9.4 °C compared to ordinary windows and maintains stable emissivity and reflectivity even after 100 cycles due to its robust solar modulation capabilities. This technology provides new energy-saving solutions for smart buildings but also explores future applications of smart materials, showcasing innovative advantages and technical strengths in smart windows.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143555161","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}

引用次数: 0