ACS polymers Au最新文献

{"title":"Vegetable Oils for Material Applications – Available Biobased Compounds Seeking Their Utilities","authors":"Vojtěch Jašek*,&nbsp; and ,&nbsp;Silvestr Figalla,&nbsp;","doi":"10.1021/acspolymersau.5c0000110.1021/acspolymersau.5c00001","DOIUrl":"https://doi.org/10.1021/acspolymersau.5c00001https://doi.org/10.1021/acspolymersau.5c00001","url":null,"abstract":"<p >Materials derived from natural sources are demanded for future applications due to the combination of factors such as sustainability increase and legislature requirements. The availability and efficient analysis of vegetable oils (triacylglycerides) open an enormous potential for incorporating these compounds into various products to ensure the ecological footprint decreases and to provide advantageous properties to the eventual products, such as flexibility, toughness, or exceptional hydrophobic character. The double bonds located in many vegetable oils are centers for chemical functionalization, such as epoxidization, hydroxylation, or many nucleophile substitutions using acids or anhydrides. Naturally occurring castor oil comprises a reactive vacant hydroxyl group, which can be modified via numerous chemical approaches. This comprehensive Review provides an overall insight toward multiple materials utilities for functionalized glycerides such as additive manufacturing (3D printing), polyurethane materials (including their chemical recycling), coatings, and adhesives. This work provides a complex list of investigated and studied applications throughout the available literature and describes the chemical principles for each selected application.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"5 2","pages":"105–128 105–128"},"PeriodicalIF":4.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.5c00001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile Method for the Preparation of Cyclodextrin-Rotaxanated Silicone Elastomers with Excellent Stretchability","authors":"Tao Xing*,&nbsp;Jiajun Ma,&nbsp;Wen-cong Xu and Yangguang Xu,&nbsp;","doi":"10.1021/acspolymersau.4c0009610.1021/acspolymersau.4c00096","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00096https://doi.org/10.1021/acspolymersau.4c00096","url":null,"abstract":"<p >Polysiloxane is an industrially important polymer, as it serves as the platform for the preparation of silicone materials with excellent thermal stability. Even though the fact that introducing rotaxanes into a polymer network provides a novel way to build new materials with peculiar mechanical properties is well-known, this tactic has rarely been applied to silicones, perhaps due to the lack of efficient synthetic methods. Here, in this work, we report the preparation and characterization of novel rotaxanated silicone elastomers by a simple two-step synthetic method. Starting from commercially available γ-cyclodextrin (CD) and vinyl-terminated polydimethylsiloxane, poly[(dimethylsiloxane)-pseudorotaxa-(γ-cyclodextrin)]s were facilely prepared. These pseudopolyrotaxanes were then used to prepare silicone elastomers of different structures and compositions. Mechanical tests of these elastomers show that they have moderate tensile strength but an excellent extension ratio (∼800% for the sample with the highest extension ratio). γ-CD plays a unique and important role in shaping the network’s topological structure and mechanical properties. This role was unveiled by applying various techniques such as solid-state NMR measurements and cyclic tensile tests to the elastomers obtained. Due to the simplicity of the current method, it may be used for large-scale preparation of stretchy silicone rubbers with optimum mechanical properties.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"5 2","pages":"162–173 162–173"},"PeriodicalIF":4.7,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Celebrating 5 Years of the ACS Au Journal Family","authors":"Paul D. Goring,&nbsp;Amelia Newman,&nbsp;Christopher W. Jones* and Shelley D. Minteer*,&nbsp;","doi":"10.1021/acspolymersau.5c0000810.1021/acspolymersau.5c00008","DOIUrl":"https://doi.org/10.1021/acspolymersau.5c00008https://doi.org/10.1021/acspolymersau.5c00008","url":null,"abstract":"","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"5 2","pages":"59–61 59–61"},"PeriodicalIF":4.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.5c00008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Observing Depolymerization of a RAFT Polymer by Time-Resolved Small-Angle X ray Scattering","authors":"Rintaro Takahashi*,&nbsp; and ,&nbsp;Ayae Sugawara-Narutaki,&nbsp;","doi":"10.1021/acspolymersau.4c0009510.1021/acspolymersau.4c00095","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00095https://doi.org/10.1021/acspolymersau.4c00095","url":null,"abstract":"<p >Recently, it has been reported that various polymethacrylates synthesized via reversible addition–fragmentation chain-transfer (RAFT) polymerization may be depolymerized by heating them to 120 °C in solution. However, insights into the mechanisms and kinetics remain limited. In this work, we monitored the depolymerization process of poly(benzyl methacrylate) in <i>p</i>-xylene using time-resolved small-angle X-ray scattering (SAXS). The results revealed that the weight-average molecular weight gradually decreased, while the z-average radius of gyration remained almost unchanged until approximately half of the repeating units were converted. This unexpected behavior could be well-reproduced by a kinetic model of end-to-end depolymerization (unzipping). This study provides the first direct observation of the structural evolution during depolymerization via an unzipping mechanism.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"5 2","pages":"129–133 129–133"},"PeriodicalIF":4.7,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cellulose-Based Nanofibers Infused with Biotherapeutics for Enhanced Wound-Healing Applications","authors":"Deepanjan Datta*,&nbsp;Sony Priyanka Bandi*,&nbsp;Viola Colaco,&nbsp;Namdev Dhas,&nbsp;Suprio Shantanu Saha,&nbsp;Syed Zubair Hussain and Sudarshan Singh*,&nbsp;","doi":"10.1021/acspolymersau.4c0009210.1021/acspolymersau.4c00092","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00092https://doi.org/10.1021/acspolymersau.4c00092","url":null,"abstract":"<p >Nanofibers fabricated from various materials such as polymers, carbon, and semiconductors have been widely used for wound healing and tissue engineering applications due to their excellent nontoxic, biocompatible, and biodegradable properties. Nanofibers with a diameter in the nanometer range possess a larger surface area per unit mass permitting easier addition of surface functionalities and release of biotherapeutics incorporated compared with conventional polymeric microfibers. Henceforth, nanofibers are a choice for fabricating scaffolds for the management of wound healing. Nanofibrous scaffolds have emerged as a promising method for fabricating wound dressings since they mimic the fibrous dermal extracellular matrix milieu that offers structural support for wound healing and functional signals for guiding tissue regeneration. Cellulose-based nanofibers have gained significant attention among researchers in the fabrication of on-site biodegradable scaffolds fortified with biotherapeutics in the management of wound healing. Cellulose is a linear, stereoregular insoluble polymer built from repeated units of <span>d</span>-glucopyranose linked with 1,4-β glycoside bonds with a complex and multilevel supramolecular architecture. Cellulose is a choice and has been used by various researchers due to its solubility in many solvents and its capacity for self-assembly into nanofibers, facilitating the mimicry of the natural extracellular matrix fibrous architecture and promoting substantial water retention. It is also abundant and demonstrates low immunogenicity in humans due to its nonanimal origins. To this end, cellulose-based nanofibers have been studied for protein delivery, antibacterial activity, and biosensor applications, among others. Taken together, this review delves into an update on cellulose-based nanofibers fused with bioactive compounds that have not been explored considerably in the past few years.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"5 2","pages":"80–104 80–104"},"PeriodicalIF":4.7,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of Cassia Gum in Enhanced Oil Recovery","authors":"Raíssa Takenaka Rodrigues Carvalho,&nbsp;Neimar Paulo de Freitas,&nbsp;Agatha Densy dos Santos Francisco,&nbsp;Luiz Carlos Palermo and Claudia Regina Elias Mansur*,&nbsp;","doi":"10.1021/acspolymersau.4c0007510.1021/acspolymersau.4c00075","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00075https://doi.org/10.1021/acspolymersau.4c00075","url":null,"abstract":"<p >The objective of this study was to develop an innovative biopolymer, cassia gum, for enhanced oil recovery (EOR) applications. The gum was extracted from the seeds of <i>Cassia grandis</i>, a native Brazilian tree, using a novel method that achieved an average yield of 24.4 ± 1.7 wt %. Structural characterization identified cassia gum as a nonionic galactomannan with an average molar mass (Mw) of 8.07 × 10⁵ ± 1.44 × 10⁵ g/mol and an organic matter content of 80.32%. A cassia gum-saline solution at 3,000 mg/L, prepared using injection water containing 29,711 mg/L of total dissolved solids, exhibited shear-thinning rheological behavior and viscoelastic properties, with a viscosity of 21.38 cP at 60 °C, closely matching crude oil viscosity. Viscoelastic testing revealed a transition from viscous to elastic behavior, enhancing EOR efficiency by improving sweep and microscopic oil displacement. Contact angle tests with API 25 oil demonstrated that cassia gum could alter carbonate rock wettability from oil-wet to intermediate-wet. Coreflooding experiments under reservoir conditions showed that cassia gum-saline fluid achieved an additional oil recovery of 13.6% OOIP, following 38.5% OOIP recovery during waterflooding. These results establish cassia gum as a promising biopolymer for EOR applications.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"5 2","pages":"134–144 134–144"},"PeriodicalIF":4.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New Highly Sulfonated Polythioethers as Polyelectrolyte Membranes for Water Electrolysis","authors":"Ignasi de Azpiazu Nadal,&nbsp;Bruno Branco,&nbsp;Günter E.M. Tovar,&nbsp;Jochen Kerres,&nbsp;René A. J. Janssen,&nbsp;Stéphanie Reynaud* and Vladimir Atanasov*,&nbsp;","doi":"10.1021/acspolymersau.4c0007910.1021/acspolymersau.4c00079","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00079https://doi.org/10.1021/acspolymersau.4c00079","url":null,"abstract":"<p >Herein, the synthesis and characterization of highly sulfonated poly(arylene thioethers) for application as polymer electrolyte membranes in water electrolysis are reported. In a first step, poly(arylene thioethers) were obtained by using mild reaction conditions of a polycondensation reaction between 4,4′-thiobisbenzenethiol and decafluorobiphenyl. In a second step, the resulting poly(arylene thioethers) were sulfonated by a fluorothiol displacement click reaction of the fluorinated monomers by sodium 3-mercapto-1-propanesulfonate. Thus, highly sulfonated polymers were obtained, resulting in water-soluble ionomers. Stable polymer electrolyte membranes with enhanced thermal and chemical stability were attained by blending ionomers with a poly(benzimidazole) derivative (PBI-OO). The resulting proton-exchange membranes (PEMs) based on the new sulfonated ionomer PBI-OO blends showed about 40% higher proton conductivity than Nafion at 90 °C. The proton-conducting membranes with the highest conductivity and best film-forming properties were applied for water electrolysis. Combined with optimized water oxidation and reduction catalysts, the selected tetra-sulfonated polymer-based PEM reached 1.784 V at 1 A cm^–2 in the electrolysis of pure water.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"5 2","pages":"145–154 145–154"},"PeriodicalIF":4.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00079","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stimuli-Responsive Multiacceptor Conjugated Polymers: Recent Trend and Future Direction","authors":"Tamanna Pradhan,&nbsp;Dinesh Kumar Chelike,&nbsp;Debarshi Roy,&nbsp;Tanay Pramanik* and Subrata Dolui*,&nbsp;","doi":"10.1021/acspolymersau.4c0008210.1021/acspolymersau.4c00082","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00082https://doi.org/10.1021/acspolymersau.4c00082","url":null,"abstract":"<p >Apart from the visual effects, geometric shapes of materials play an important role in their engineering and biomedical applications. Responsive materials-based patient-specific anatomical models provide better insights into the structure and pathology. Polymers are by far the most utilized class of materials for advanced science and technology. Because of these properties, these polymers have been used as functional coatings, thermoplastics, biomedical materials, separators, and binders for Li-ion batteries, fuel cell membranes, piezoelectric devices, high-quality wires and cables, and so on. Reactive to stimuli because of their unusual electrical characteristics and adaptability, stimuli-responsive multiacceptor conjugated polymers have been a prominent focus of materials science study. These polymers combine several electron-accepting units inside their conjugated backbone, resulting in increased functionality and responsiveness to a variety of stimuli. The production, workings, and wide range of applications of stimuli-responsive multiacceptor conjugated polymers are the focus of this review.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"5 2","pages":"62–79 62–79"},"PeriodicalIF":4.7,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00082","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pentaerythritol and Glycerol Ester-Based Rosin-Modified Hydroxyl-Terminated Polybutadiene (HTPB)","authors":"Frank Lee,&nbsp;Aran Guner,&nbsp;Ken Lewtas and Tony McNally*,&nbsp;","doi":"10.1021/acspolymersau.4c0008910.1021/acspolymersau.4c00089","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00089https://doi.org/10.1021/acspolymersau.4c00089","url":null,"abstract":"<p >Hydroxyl-terminated polybutadiene (HTPB) has widespread applications such as in adhesives, coatings, and solid propellants due to its durability and excellent mechanical strength when cross-linked, which can be maintained at low temperatures. However, many of the additives used to modify the properties of HTPB are not sustainably sourced nor have the functionality such that tailoring of HTPB properties can be achieved. Here, we describe the use of the pentaerythritol ester of rosin (PER) and glycerol ester of rosin (GER), sourced from gum rosin (pine trees), to modify the rheology and mechanical properties of uncross-linked and cross-linked HTPB. Both rosin esters are compatible with HTPB resulting in a change in the glass transition temperature (<i>T</i>_g) of HTPB, which is concentration-dependent. The inclusion of PER increased the viscosity of uncross-linked HTPB more than GER due to the additional abietic functionality per molecule. The rosin esters also compete with the terminal hydroxyl groups of HTPB during cross-linking with toluene diisocyanate (HTPB-PU). Consequently, the cross-link density of HTPB-PU decreases and the molecular mass between cross-links increases with increasing PER/GER content. This competition results in a decrease in Young’s modulus and tensile strength of HTPB but a significant increase in elongation at break (+153%) and tensile toughness (+76%) of HTPB.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"5 2","pages":"155–161 155–161"},"PeriodicalIF":4.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00089","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the Flame Retardancy and Mechanical Properties of Vinyl Ester Resins through Maleated Epoxidized Corn Oil/Epoxy Resin Additives for Sustainable Thermoset Composites","authors":"Maurelio Cabo Jr.*,&nbsp;Prabhakar Manoj Narendra,&nbsp;Dong-Woo Lee,&nbsp;Ruiwen Yu,&nbsp;Vinitsa Chanthavong and Jung-Il Song*,&nbsp;","doi":"10.1021/acspolymersau.4c0008810.1021/acspolymersau.4c00088","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00088https://doi.org/10.1021/acspolymersau.4c00088","url":null,"abstract":"<p >Thermoset polymers serve a significant role in modern industrial applications, and with a global annual output of over 65 million tons to meet this growing demand for sustainable materials, scientists and engineers need to go beyond what makes a material best for a certain use. Vinyl ester (VE) is a thermosetting polymer derived from polyester and epoxy resin. Its mixing properties distinguish it from its competitors, offering advantages in terms of curing efficiency, wettability, corrosion resistance, and low cost, which are crucial for modern industrial applications. Researchers have continuously explored the modifications of the intrinsic properties of VE using additives to enhance its flame retardancy and mechanical characteristics for more cost-effective and environmentally friendly materials applicable across various industries. In this study, we developed an easy-to-process eco-thermoset blend additive (50% v/v), known as maleated epoxidized corn oil/epoxy resin (MEPECO). Adding an optimal amount of MEPECO (5%) to the VE resin significantly improved its flame retardancy properties, as assessed by pyrolysis-combustion flow calorimetry, contact angle measurements, and thermogravimetric analysis. The mechanical properties, specifically strength, also showed substantial enhancement with the same optimal amount of MEPECO, as determined by flexural testing and spectral analysis. However, during the digestion of the eco-thermoset resin, the modulus and impact energy were notably lower owing to shear-yielding localization, as evidenced by the morphological analysis. This paper presents a novel in situ and straightforward technique for the easy and effective blending of eco-thermoset additives into petroleum-based epoxy resins, thereby facilitating their potential application in the development of sustainable green composite materials.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"5 1","pages":"45–58 45–58"},"PeriodicalIF":4.7,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00088","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}