Macromolecular Chemistry and Physics最新文献_第3页

Synthesis of Amphiphilic Polymer Co-Networks via the Growth of a Living RAFT Network

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-30 DOI: 10.1002/macp.202500004

Ziyi Liu, Yihan Zhang, Costas S. Patrickios, Jianyong Jin

{"title":"Synthesis of Amphiphilic Polymer Co-Networks via the Growth of a Living RAFT Network","authors":"Ziyi Liu, Yihan Zhang, Costas S. Patrickios, Jianyong Jin","doi":"10.1002/macp.202500004","DOIUrl":"https://doi.org/10.1002/macp.202500004","url":null,"abstract":"In this study, a different approach for synthesizing amphiphilic polymer co-networks (APCNs) via the growth of a living RAFT (reversible addition–fragmentation chain transfer) network, is presented. For the hydrophilic parent RAFT network, 2-(Dimethylamino)ethyl methacrylate (DMAEMA) is used as the hydrophilic/polar monomer, poly(ethylene glycol) diacrylate 700 (PEGDA 700) as the hydrophilic cross-linker, S,S-Dibenzyl trithiocarbonate (DBTTC) as the RAFT agent, and 5,10,15,20-Tetraphenyl-21H,23H-porphine zinc (ZnTPP) as the photocatalyst. Subsequently, the hydrophobic monomer methyl methacrylate (MMA) is incorporated into the parent network to form the amphiphilic daughter network, following the network growth protocol established by the group in 2019. Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) are employed to characterize the resulting APCN daughter network. Most importantly, the amphiphilicity of the APCN network is evaluated through swelling tests in water and n-hexane. This approach offers advantages in tuning the network's amphiphilicity by simply adjusting the photogrowth time or the crosslinking density of the parent gel. Also, this technique can reduce the time and effort required to produce APCNs.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.202500004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690258","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}

引用次数: 0

Thermoresponsive Behaviors of Core-Crosslinked Star Polymers Composed of Amino Acid-Derived Vinyl Polymers in an Aqueous Solution

IF 2.5 4区化学

Macromolecular Chemistry and Physics Pub Date : 2025-01-27 DOI: 10.1002/macp.202400485

Shin-nosuke Nishimura, Momoka Kamiya, Nobuyuki Higashi, Tomoyuki Koga

{"title":"Thermoresponsive Behaviors of Core-Crosslinked Star Polymers Composed of Amino Acid-Derived Vinyl Polymers in an Aqueous Solution","authors":"Shin-nosuke Nishimura, Momoka Kamiya, Nobuyuki Higashi, Tomoyuki Koga","doi":"10.1002/macp.202400485","DOIUrl":"https://doi.org/10.1002/macp.202400485","url":null,"abstract":"Amino acid-derived vinyl polymers are of great interest as bio-based thermoresponsive soft materials with diverse applications in the industrial, biomedical, and cosmetic fields. In this study, 14 distinct core-crosslinked stars (CCS) polymers are synthesized by reversible addition–fragmentation chain transfer polymerization of N-acryloyl amino acid (X)-methyl esters (X = alanine, β-alanine, or glycine), followed by a core–gel approach. These CCS polymers have the following systematic variations in their molecular architecture: i) three types of amino acid-based polymer arms with the same chain lengths but different arm numbers, ii) different combinations of amino acid species in the arm and core segments, and iii) heteroarm composition (i.e., miktoarm type). All CCS polymers are water-soluble and exhibited lower critical solution temperature (LCST) behaviors. The thermal responses are strongly dependent on structural factors, such as arm species (hydrophobicity), arm number, and polymer shape. The transition temperatures of the CCS polymers are lower than those of the corresponding linear polymers with almost the same molecular weight, particularly when the arm polymers has relatively high hydrophilicity. Furthermore, tunable LCST behaviors (20–55 °C) are achieved for miktoarm-type CCS polymers by adjusting heteroarm composition. These findings provide useful insights into the thermoresponsive behaviors of bio-based CCS polymers.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690289","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

Front Cover: 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.202570003

引用次数: 0

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

引用次数: 0

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}

引用次数: 0

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}

引用次数: 0

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

引用次数: 0

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

引用次数: 0

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

引用次数: 0

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

引用次数: 0