Macromolecular Chemistry and Physics最新文献_第7页

qPEI Thin Films as Adsorbers of Different PFAS in Aqueous Media qPEI薄膜作为不同PFAS在水介质中的吸附剂

IF 2.8 4区化学

Macromolecular Chemistry and Physics Pub Date : 2026-07-13 DOI: 10.1002/macp.70294

Patrick Arkadiusz Meier, Jenna Rumpf, Robert Schusterbauer, Philip Nickl, Victoria Kämmer, Rainer Haag, Lars Heinke

{"title":"qPEI Thin Films as Adsorbers of Different PFAS in Aqueous Media","authors":"Patrick Arkadiusz Meier, Jenna Rumpf, Robert Schusterbauer, Philip Nickl, Victoria Kämmer, Rainer Haag, Lars Heinke","doi":"10.1002/macp.70294","DOIUrl":"https://doi.org/10.1002/macp.70294","url":null,"abstract":"The removal of per- and polyfluoroalkyl substances (PFAS) from water is of utmost importance. Quaternized polyethyleneimine (qPEI) was shown to be an efficient PFAS adsorbent material. Here, synthesized qPEI is immobilized on a quartz crystal microbalance (QCM) substrate and the adsorption of different PFAS on the qPEI-coated surface is explored in detail. qPEI adsorbers prepared as films are used to explore the gravimetric uptake of selected perfluoroalkyl carboxylic acids (PFCAs), and perfluorobutanesulfonic acid (PFBS). The advantage of this QCM method is the in situ monitoring of the adsorbed quantity. The results reveal a clear dependence of the uptake amount on the fluorinated carbon chain length, following the trend PFNA > PFOA > PFHpA > PFHxA > PFBS, indicating stronger interaction and higher adsorption capacities for longer-chain PFAS. Vibrational spectroscopy provides more insights and verifies that, in addition to the ionic interaction, the PFAS-CF groups participate in the fluorospecific interactions at the adsorption. Overall, this study demonstrates the suitability of qPEI-based films for PFAS uptake investigations and highlights the importance of the molecular structure on the adsorption efficiency. Although the PFAS concentrations explored are significantly larger than the relevant environmental concentrations, this study supports the development of efficient, low-cost PFAS adsorbent materials.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"227 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.70294","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148533115","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

Amphiphilic Block Copolymer Networks by Sequential Branching-Extension-Crosslinking Atom Transfer Radical Polymerization 顺序支链-延伸-交联原子转移自由基聚合的两亲嵌段共聚物网络

IF 2.8 4区化学

Macromolecular Chemistry and Physics Pub Date : 2026-06-26 DOI: 10.1002/macp.70291

Jodie C. Mercurio, Gavin Irvine, Maciej Kopeć

{"title":"Amphiphilic Block Copolymer Networks by Sequential Branching-Extension-Crosslinking Atom Transfer Radical Polymerization","authors":"Jodie C. Mercurio, Gavin Irvine, Maciej Kopeć","doi":"10.1002/macp.70291","DOIUrl":"https://doi.org/10.1002/macp.70291","url":null,"abstract":"Crosslinked block copolymer (BCP) gel networks are synthesized by chain extension of a branched macroinitiator with a second monomer and crosslinker under atom transfer radical polymerization (ATRP) conditions. Specifically, crosslinked poly(tert-butyl acrylate)-b-poly(n-butyl acrylate) (PtBA-b-PnBA) gels are synthesized by photoinduced ATRP with the aim of forming amphiphilic block copolymer gels via deprotection of the tert-butyl acrylate group. By using a controlled polymerization method such as ATRP, the gel point of the first (co)polymerization of a tBA/crosslinker mixture can be delayed and reached only once the second monomer (nBA) and extra crosslinker are added. The BCP gels can be made successfully both in a one-pot polymerization and with purification of the initial block before chain extension. These gels are subjected to thermomechanical and swelling analysis, before and after deprotection with trifluoroacetic acid (TFA). Rheology, swelling, and thermogravimetry all confirmed the incorporation of both monomers in the gel structure. Furthermore, after deprotection, three Tg values were observed by differential scanning calorimetry (DSC) of a crosslinked BCP, compared with a single Tg value for a statistical analogue of the same composition, thus corroborating the difference in their morphology.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"227 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.70291","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148322319","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

Targeting Highly Linear Polyethylenes with Different Molecular Weights Through Finely Tuning Substituents 通过微调取代基靶向不同分子量的高线性聚乙烯

IF 2.8 4区化学

Macromolecular Chemistry and Physics Pub Date : 2026-06-26 DOI: 10.1002/macp.70292

Tian Liu, Yanping Ma, Rong Gao, Qingqiang Gou, Wen-Hua Sun

{"title":"Targeting Highly Linear Polyethylenes with Different Molecular Weights Through Finely Tuning Substituents","authors":"Tian Liu, Yanping Ma, Rong Gao, Qingqiang Gou, Wen-Hua Sun","doi":"10.1002/macp.70292","DOIUrl":"https://doi.org/10.1002/macp.70292","url":null,"abstract":"<div>\u0000 \u0000 Targeting phase-change materials with cheap and clean advantages, the linear polyethylenes are highly demanded along with the correlations between the dispersity and melting range or the molecular weight and melting point. A series of 4,4'-dichlorobenzhydryl-substituted 2,6-diaryliminopyridyliron dichlorides (Fe1 – Fe5) is prepared and used as efficient catalysts in polymerizing ethylene to form polyethylenes with highly linear property but having different molecular weights and dispersity. Activated with MAO, all iron precatalysts perform high activities up to 2.0 × 107 g of PE (mol of Fe)−1 h−1 resulting bimodal polyethylenes; meanwhile, activated with MMAO, the analog systems efficiently polymerize ethylene for polymers with lower molecular weights, being as polyethylene waxes. Combining the features of substituents with different electronic and steric effects, therefore, their catalytic performances have been finely controlled in tailoring microstructures of resultant polyethylenes. In addition, all iron complexes are fully characterized by FT-IR spectroscopy, high resolution mass spectroscopy and elemental analysis; moreover, the representative complexes Fe3 and Fe4 are confirmed by the single crystal X-ray diffraction.\u0000 </div>","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"227 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148322320","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

Dispersion-Dominated Noncovalent Stabilization with Weak Polarization-Assisted O···H Contacts in the PMMA-PS Polymer Framework PMMA-PS聚合物框架中弱极化辅助O···H接触的色散主导非共价稳定

IF 2.8 4区化学

Macromolecular Chemistry and Physics Pub Date : 2026-06-25 DOI: 10.1002/macp.70290

Renjith Thomas, Athira Maria John, Abdullah Yahya Abdullah Alzahrani, Thangaiyan Pooventhiran, Dalia I. Saleh, Samy F. Mahmoud

{"title":"Dispersion-Dominated Noncovalent Stabilization with Weak Polarization-Assisted O···H Contacts in the PMMA-PS Polymer Framework","authors":"Renjith Thomas, Athira Maria John, Abdullah Yahya Abdullah Alzahrani, Thangaiyan Pooventhiran, Dalia I. Saleh, Samy F. Mahmoud","doi":"10.1002/macp.70290","DOIUrl":"https://doi.org/10.1002/macp.70290","url":null,"abstract":"<div>\u0000 \u0000 Blending of polymers provides a cost-effective strategy to tune properties of materials; however, a detailed understanding of interfacial and intermolecular interactions remains limited. In this work, we present the first density functional theory (DFT) based investigation of intermolecular interactions in the PMMA-PS blend. Binding energy calculations revealed a favorable association (ΔE = −19.31 kcal/mol), while Xiamen energy decomposition analysis had a total interaction energy of −8.79 kcal/mol, indicating that noncovalent forces dominate thermodynamic stability. NCI, NBO, and AIM analyses showed that stabilization arises primarily from dispersion-driven van der Waals interactions, with minor polarization-assisted O···H interactions, characterized by low electron density at bond critical points (ρ = 0.003–0.012 a.u.) and weak stabilization energies (∼1 kcal/mol). Molecular electrostatic potential (MESP) mapping highlights complementary charge distributions at the interface. Ab initio molecular dynamics (AIMD) simulations confirm rapid structural relaxation (80–100 fs) and sustained stability at 310 K over 500 fs. By directly linking electronic-structure interactions with blend stability, this work establishes a predictive molecular-level framework for the rational design of PMMA-PS-based functional polymer materials.\u0000 </div>","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"227 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148322435","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

Issue Information: Macromol. Chem. Phys. 12/2026 发布信息：Macromol。化学。理论物理的12/2026

IF 2.8 4区化学

Macromolecular Chemistry and Physics Pub Date : 2026-06-25 DOI: 10.1002/macp.70293

引用次数: 0

Solution Self-Assembly Behavior of Cholesterol-Functionalized Block Copolymers: A Comparative Study 胆固醇功能化嵌段共聚物溶液自组装行为的比较研究

IF 2.8 4区化学

Macromolecular Chemistry and Physics Pub Date : 2026-06-25 DOI: 10.1002/macp.70289

Yidan Zhao, Jiarui Luan, Lulu Liu, Yujie Xie, Zaizai Tong

引用次数: 0

Porous Polycaprolactone Microspheres Dispersed Hydrogel as Injectable Filler for Facial Volumization 多孔聚己内酯微球分散水凝胶可注射填充面部体积

IF 2.8 4区化学

Macromolecular Chemistry and Physics Pub Date : 2026-06-14 DOI: 10.1002/macp.70288

Mingwei Yuan, Jiaxin Guo, Yan Xiao, Meidong Lang

{"title":"Porous Polycaprolactone Microspheres Dispersed Hydrogel as Injectable Filler for Facial Volumization","authors":"Mingwei Yuan, Jiaxin Guo, Yan Xiao, Meidong Lang","doi":"10.1002/macp.70288","DOIUrl":"https://doi.org/10.1002/macp.70288","url":null,"abstract":"<div>\u0000 \u0000 The demand for injectable fillers in the medical aesthetics market has been growing significantly. However, current facial fillers such as Ellansé or Sculptra, which consist of solid microspheres, tend to sediment and aggregate during clinical use. Besides, their low porosity restricts the effective filling volume per injection. Herein, an injectable facial filler utilizing porous polycaprolactone (PCL) microspheres (PMs) was developed. A cost-effective oil-in-water (O/W) emulsion solvent evaporation method was employed to prepare porous microspheres, incorporating camphene as the porogen. Scanning electron microscopy (SEM) analysis revealed that the pore distribution of the PMs was uniform. Owing to this unique PMs architecture, the specific surface area of the PMs was approximately 20 times greater than that of the solid control group. Furthermore, injectable fillers were prepared by incorporating solid or porous PCL microspheres into HA and CMC hydrogels, respectively. Compared to the HA hydrogel, the CMC hydrogel exhibited higher viscosity and suspension capacity for preventing PCL microsphere sedimentation. Additionally, the CMC/PMs filler delivered significantly enhanced mechanical properties relative to the CMC/SMs filler. Moreover, both the PMs and composite hydrogel fillers showed excellent cytocompatibility. Overall, the facile strategy proposed here represented substantial prospects for clinical translation in the field of facial volumization.\u0000 </div>","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"227 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148282021","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

Synergistic Regulation of Hydrogen Partial Pressure and Ligand Effects on the Metallocene-Catalyzed Synthesis of Polyethylene Wax 氢分压的协同调节及配体效应对茂金属催化合成聚乙烯蜡的影响

IF 2.7 4区化学

Macromolecular Chemistry and Physics Pub Date : 2026-06-09 DOI: 10.1002/macp.70284

Miao Huang, Qingyun Chu, Xuelian He, Zhou Tian

{"title":"Synergistic Regulation of Hydrogen Partial Pressure and Ligand Effects on the Metallocene-Catalyzed Synthesis of Polyethylene Wax","authors":"Miao Huang, Qingyun Chu, Xuelian He, Zhou Tian","doi":"10.1002/macp.70284","DOIUrl":"https://doi.org/10.1002/macp.70284","url":null,"abstract":"<div>\u0000 \u0000 Polyethylene wax (PEW) produced by metallocene catalysts has attracted increasing interest due to its excellent physicochemical properties. Research on using constrained geometry catalysts (CGCs), a class of metallocene catalysts, to control the molecular weight of PEW by modifying ligand steric and electronic effects has rarely been mentioned. In this work, five titanium-based CGC-type metallocene catalysts with systematically tuned ligand architectures were synthesized and evaluated for ethylene polymerization toward PEW. The combined influences of ligand steric/electronic properties and H2 partial pressure on catalytic behavior and PEW characteristics were investigated. The results reveal that steric and electronic effects synergistically regulate chain-transfer and chain-growth processes. CGCs with reduced steric hindrance and stronger electron-donating ligands promote chain transfer, affording low-molecular-weight PEW with broader molecular weight distributions. In contrast, increased steric bulk and/or weakened electron donation suppress chain transfer and delay chain termination, producing higher-molecular-weight PEW with narrower dispersity. Notably, the [t-BuNSiMe2(Me4Cp)]TiMe2/MAO system at an H2 partial pressure of 0.9 MPa delivered PEW with Mn = 0.24×104 g·mol−1, PDI = 2.28, and a melt flow index of 13.83 g·10 min−1. This work demonstrates that CGC ligand engineering combined with H2 regulation provides an effective strategy for the directional synthesis of PEW with tailored properties.\u0000 </div>","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"227 11","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237484","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

Synthesis of Hyperbranched Polyphenylenes With Controlled Molecular Weight by Suzuki–Miyaura Catalyst-Transfer Polycondensation Suzuki-Miyaura催化-转移缩聚合成分子量可控的超支化聚苯乙烯

IF 2.7 4区化学

Macromolecular Chemistry and Physics Pub Date : 2026-06-04 DOI: 10.1002/macp.70287

Mitsutoshi Jikei, Yusaku Mayumi, Kazuya Matsumoto

引用次数: 0

Swelling Thermodynamics and Kinetics of Crosslinked Polystyrene Resin in Solid-Phase Synthesis 固相合成交联聚苯乙烯树脂的溶胀热力学和动力学

IF 2.7 4区化学

Macromolecular Chemistry and Physics Pub Date : 2026-06-02 DOI: 10.1002/macp.70283

Sebastián Pinzón-López, Dominik Ebert, Matthias Kraume, Peter H. Seeberger, José Danglad-Flores

{"title":"Swelling Thermodynamics and Kinetics of Crosslinked Polystyrene Resin in Solid-Phase Synthesis","authors":"Sebastián Pinzón-López, Dominik Ebert, Matthias Kraume, Peter H. Seeberger, José Danglad-Flores","doi":"10.1002/macp.70283","DOIUrl":"https://doi.org/10.1002/macp.70283","url":null,"abstract":"Cross-linked polymer resins are widely used as solid supports in solid-phase synthesis (SPS), where access to internal reactive sites depends on swelling of the gel-like polymer network. Despite its central role, swelling lacks well-defined physical metrics, limiting the rational design of SPS processes and reactor systems. Here, we investigate the swelling behavior of spherical polystyrene–divinylbenzene (PS–DVB, 1% cross-linked) resins in dichloromethane (DCM) and dimethylformamide (DMF) from both thermodynamic and kinetic perspectives. Combining the Flory–Rehner framework with Hansen solubility parameters, we show that attached glycans increase polymer–solvent affinity toward DCM, whereas peptides reduce it. The equilibrium swelling degree exhibits only a weak temperature dependence, while swelling kinetics in packed-bed geometries are strongly temperature dependent: relaxation times in DCM increase from 18 s at 20°C to 35 s at −30°C. These results establish quantitative time scales for resin swelling under SPS conditions and provide a mechanistic basis for using resin-volume changes as a real-time indicator of reaction progress.","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"227 11","pages":""},"PeriodicalIF":2.7,"publicationDate":"2026-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/macp.70283","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148173965","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