ACS polymers Au最新文献

{"title":"Design of Highly Conductive PILs by Simple Modification of Poly(epichlorohydrin-co-ethylene oxide) with Monosubstituted Imidazoles","authors":"Daniil R. Nosov, Elena I. Lozinskaya, Dmitrii Y. Antonov, Denis O. Ponkratov, Andrey A. Tyutyunov, Malak Alaa Eddine, Cédric Plesse, Daniel F. Schmidt, Alexander S. Shaplov","doi":"10.1021/acspolymersau.4c00051","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00051","url":null,"abstract":"High ionic conductivity poly(ionic liquid)s (PILs) are of growing interest for their thermal and electrochemical stability, processability, and potential in safe, flexible all-solid-state electrochemical devices. While various approaches to enhance the ionic conductivity are reported, the influence of cation substituents is rarely addressed. Moreover, some of the asymmetric anions recently developed for high-conductivity ionic liquids were never tested in PILs. We report the design and synthesis of twelve novel cationic PILs prepared via quaternization of N-substituted imidazoles by commercially available poly(epichlorohydrin-<i>co</i>-ethylene oxide) (poly(EPCH-<i>r</i>-EO)) with subsequent ion metathesis. They differ by imidazolium side chain length (C₁–C₆ alkyl) and presence of heteroatoms (silyl, siloxane, and fluoroalkyl) and by anion type (bis(trifluoromethylsulfonyl)imide (TFSI), 2,2,2-trifluoromethylsulfonyl-<i>N</i>-cyanoamide (TFSAM), tetrafluoroborate (BF₄), trifluoro(trifluoromethyl)borate (BF₃CF₃), and tricyanofluoroborate (BF(CN)₃)). TFSI-based PILs with alkyl side chains gave lower glass transition temperatures (<i>T</i>_g) and higher ionic conductivities than those bearing heteroatomic substituents, with <i>n</i>-butyl side chains providing a conductivity of 4.7 × 10^–6 S cm^–1 at 25 °C under anhydrous conditions. This increased to 1.0 × 10^–5 and 4.5 × 10^–4 S cm^–1 at 25 and 70 °C, respectively, when the TFSI anion was replaced with BF(CN)₃. All PILs showed good electrochemical (&gt;3.2 V vs Ag⁺/Ag) and thermal (&gt;185 °C) stability, making them excellent candidates for solid-state electrolytes in electrochemical devices.","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142211002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancements in Novel Mechano-Rheological Probes for Studying Glassy Dynamics in Nanoconfined Thin Polymer Films","authors":"Mithun Madhusudanan,&nbsp; and ,&nbsp;Mithun Chowdhury*,&nbsp;","doi":"10.1021/acspolymersau.4c0002210.1021/acspolymersau.4c00022","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00022https://doi.org/10.1021/acspolymersau.4c00022","url":null,"abstract":"<p >The nanoconfinement effects of glassy polymer thin films on their thermal and mechanical properties have been investigated thoroughly, especially with an emphasis on its altered glass transition behavior compared to bulk polymer, which has been known for almost three decades. While research in this direction is still evolving, reaching new heights to unravel the underlying physics of phenomena observed in confined thin polymer films, we have a much clearer picture now. This, in turn, has promoted their application in miniaturized and functional applications. To extract the full potential of such confined films, starting from their fabrication, function, and various applications, we must realize the necessity to have an understanding and availability of robust characterization protocols that specifically target thin film thermo-mechanical stability. Being nanometer-sized in thickness, often atop a solid substrate, direct mechanical testing on such films becomes extremely challenging and often encounters serious complexity from the dominating effect of the substrate. In this review, we have compiled together a few important novel and promising techniques for mechano-rheological characterization of glassy polymer thin films. The conceptual background involved in each technique, constitutive equations, methodology, and current status of research are touched upon following a pedagogical tutorial approach. Further, we discussed each technique’s success and limitations, carefully covering the puzzling or contradicting observations reported within the broad nexus of glass transition temperature–viscosity–modulus–molecular mobility (including diffusion and relaxation).</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"4 5","pages":"342–391 342–391"},"PeriodicalIF":4.7,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142403040","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":"Advancements in Novel Mechano-Rheological Probes for Studying Glassy Dynamics in Nanoconfined Thin Polymer Films","authors":"Mithun Madhusudanan, Mithun Chowdhury","doi":"10.1021/acspolymersau.4c00022","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00022","url":null,"abstract":"The nanoconfinement effects of glassy polymer thin films on their thermal and mechanical properties have been investigated thoroughly, especially with an emphasis on its altered glass transition behavior compared to bulk polymer, which has been known for almost three decades. While research in this direction is still evolving, reaching new heights to unravel the underlying physics of phenomena observed in confined thin polymer films, we have a much clearer picture now. This, in turn, has promoted their application in miniaturized and functional applications. To extract the full potential of such confined films, starting from their fabrication, function, and various applications, we must realize the necessity to have an understanding and availability of robust characterization protocols that specifically target thin film thermo-mechanical stability. Being nanometer-sized in thickness, often atop a solid substrate, direct mechanical testing on such films becomes extremely challenging and often encounters serious complexity from the dominating effect of the substrate. In this review, we have compiled together a few important novel and promising techniques for mechano-rheological characterization of glassy polymer thin films. The conceptual background involved in each technique, constitutive equations, methodology, and current status of research are touched upon following a pedagogical tutorial approach. Further, we discussed each technique’s success and limitations, carefully covering the puzzling or contradicting observations reported within the broad nexus of glass transition temperature–viscosity–modulus–molecular mobility (including diffusion and relaxation).","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"339 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141743165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Engineering of l-Aspartic Amphiphilic Polyesters for Enzyme-Responsive Drug Delivery and Bioimaging in Cancer Cells","authors":"Mohammed Khuddus, Utreshwar Arjun Gavhane, Manickam Jayakannan","doi":"10.1021/acspolymersau.4c00013","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00013","url":null,"abstract":"Design and development of amphiphilic polyesters based on bioresources are very important to cater to the ever-growing need for biodegradable polymers in biomedical applications. Here, we report structural engineering of enzyme-responsive amphiphilic polyesters based on <span>l</span>-amino acid bioresources and study their drug delivery aspects in the cancer cell line. For this purpose, an <span>l</span>-aspartic acid-based polyester platform is chosen, and two noncovalent forces such as hydrogen bonding and side-chain hydrophobic interactions are introduced to study their effect on the aqueous self-assembly of nanoparticles. The synthetic strategy involves the development of <span>l</span>-aspartic acid-based dimethyl ester monomers with acetal and stearate side chains and subjecting them to solvent-free melt polycondensation reactions to produce side-chain-functionalized polyesters in the entire composition range. Postpolymerization acid catalyst deprotection of acetal yielded hydroxyl-functionalized polyesters. Amphiphilicity of the polymer is carefully fine-tuned by varying the composition of the stearate and hydroxyl units in the polymer chains to produce self-assembly in water. Various drugs such as camptothecin (CPT), curcumin (CUR), and doxorubicin (DOX) and biomarkers like 8-hydroxypyrene-1,3,6-trisulfonic acid trisodium salt (HPTS), rose bengal (RB), and Nile red (NR) are successfully encapsulated in the polymer nanoparticles. Cytotoxicity of biodegradable polymer nanoparticles is tested in normal and breast cancer cell lines. The polymer nanoparticles are found to be highly biocompatible and delivered the anticancer drugs in the intracellular compartments of the cells.","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141721166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rational Monomer Design for the Synthesis of Conjugated Polymers by Direct Heteroarylation Polymerization","authors":"Navnath R. Kakde,&nbsp;Himanshu Sharma,&nbsp;Nitin V. Dalvi,&nbsp;Kumar Vanka and Asha S.K*,&nbsp;","doi":"10.1021/acspolymersau.4c0005010.1021/acspolymersau.4c00050","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00050https://doi.org/10.1021/acspolymersau.4c00050","url":null,"abstract":"<p >This study focuses on the design concepts that contribute to the C–H activation in bithiophene-flanked monomers incorporating naphthalene diimide (NDI), perylene diimide (PDI), and fluorene (FLU) and their polymerization by direct heteroarylation. Density functional theory (DFT) calculations reveal distinct energy requirements for C–H bond abstraction, which is dictated by the electron-withdrawing strength of the central aromatic core flanked by bithiophene. These provide insights into the reactivity of each monomer for C–H bond activation. Proton NMR spectroscopic experimental results confirm the favorable energetic profiles predicted by DFT, with NDI- and PDI-flanked monomers exhibiting lower energy requirements than fluorene-flanked monomers. Successful polymer synthesis is demonstrated for NDI and PDI, while the fluorene-flanked monomer shows challenges due to its higher energy demands.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"4 5","pages":"449–459 449–459"},"PeriodicalIF":4.7,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00050","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142402892","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":"Rational Monomer Design for the Synthesis of Conjugated Polymers by Direct Heteroarylation Polymerization","authors":"Navnath R. Kakde, Himanshu Sharma, Nitin V. Dalvi, Kumar Vanka, Asha S.K","doi":"10.1021/acspolymersau.4c00050","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00050","url":null,"abstract":"This study focuses on the design concepts that contribute to the C–H activation in bithiophene-flanked monomers incorporating naphthalene diimide (NDI), perylene diimide (PDI), and fluorene (FLU) and their polymerization by direct heteroarylation. Density functional theory (DFT) calculations reveal distinct energy requirements for C–H bond abstraction, which is dictated by the electron-withdrawing strength of the central aromatic core flanked by bithiophene. These provide insights into the reactivity of each monomer for C–H bond activation. Proton NMR spectroscopic experimental results confirm the favorable energetic profiles predicted by DFT, with NDI- and PDI-flanked monomers exhibiting lower energy requirements than fluorene-flanked monomers. Successful polymer synthesis is demonstrated for NDI and PDI, while the fluorene-flanked monomer shows challenges due to its higher energy demands.","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141572934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solid-State Fluorescent Organic Polymers for Visual Detection and Elimination of Heavy Metals in Water","authors":"Debashis Barik,&nbsp;Abhirami Anilkumar and Mintu Porel*,&nbsp;","doi":"10.1021/acspolymersau.4c0004810.1021/acspolymersau.4c00048","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00048https://doi.org/10.1021/acspolymersau.4c00048","url":null,"abstract":"<p >Selective sensing and removal of toxic heavy metals from water are highly essential since their presence poses significant health and environmental hazards. Herein, we designed and synthesized a novel fluorescent nonconjugated organic polymer by strategically incorporating two key functional groups, namely, a dansyl fluorophore and dithiocarbamate (DTC). Different characterization techniques, including ¹H nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDAX), Fourier transform infrared (FTIR), and fluorescence spectroscopy, were performed to understand its structure and material properties. The quantum yield of 4.72% and its solid-state fluorescence indicate that it has potential for various applications in several technological and scientific domains. In this study, we investigated a specific application involving the detection and elimination of heavy metals from water. Interestingly, the presence of dansyl and DTC moieties demonstrated remarkable selectivity toward Cu²⁺, Co²⁺, Ni²⁺, Fe³⁺, and Fe²⁺ sensing, displaying distinct color changes specific to each metal. Cu²⁺ resulted in a yellow color, Co²⁺ showed a green color, Ni²⁺ displayed a pale yellowish-green color, and Fe²⁺/Fe³⁺ exhibited a brown color. The LOD (limit of detection) for each metal was obtained in the nanomolar range by using a fluorescence spectrometer and the micromolar range from UV–visible spectra: 13.27 nM and 0.518 μM for Cu²⁺, 8.27 nM and 0.581 μM for Co²⁺, 14.36 nM and 0.140 μM for Ni²⁺, 14.95 nM and 0.174 μM for Fe²⁺, and 15.54 nM and 0.33 μM for Fe³⁺. Moreover, the DTC functionality on its backbone facilitates effective interaction with the aforementioned heavy metals, subsequently removing them from water (except Fe²⁺ and Fe³⁺), validating its dual functionality as both an indicator and a purifier for heavy metals in water. The polymer exhibited a maximum adsorption capacity of 192.30 mg/g for Cu²⁺, 159.74 mg/g for Co²⁺, and 181.81 mg/g for Ni²⁺. Furthermore, this approach exhibits versatility in crafting fluorescent polymers with adjustable attributes that are suitable for a wide range of applications.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"4 5","pages":"428–437 428–437"},"PeriodicalIF":4.7,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142402778","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":"Solid-State Fluorescent Organic Polymers for Visual Detection and Elimination of Heavy Metals in Water","authors":"Debashis Barik, Abhirami Anilkumar, Mintu Porel","doi":"10.1021/acspolymersau.4c00048","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00048","url":null,"abstract":"Selective sensing and removal of toxic heavy metals from water are highly essential since their presence poses significant health and environmental hazards. Herein, we designed and synthesized a novel fluorescent nonconjugated organic polymer by strategically incorporating two key functional groups, namely, a dansyl fluorophore and dithiocarbamate (DTC). Different characterization techniques, including ¹H nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDAX), Fourier transform infrared (FTIR), and fluorescence spectroscopy, were performed to understand its structure and material properties. The quantum yield of 4.72% and its solid-state fluorescence indicate that it has potential for various applications in several technological and scientific domains. In this study, we investigated a specific application involving the detection and elimination of heavy metals from water. Interestingly, the presence of dansyl and DTC moieties demonstrated remarkable selectivity toward Cu²⁺, Co²⁺, Ni²⁺, Fe³⁺, and Fe²⁺ sensing, displaying distinct color changes specific to each metal. Cu²⁺ resulted in a yellow color, Co²⁺ showed a green color, Ni²⁺ displayed a pale yellowish-green color, and Fe²⁺/Fe³⁺ exhibited a brown color. The LOD (limit of detection) for each metal was obtained in the nanomolar range by using a fluorescence spectrometer and the micromolar range from UV–visible spectra: 13.27 nM and 0.518 μM for Cu²⁺, 8.27 nM and 0.581 μM for Co²⁺, 14.36 nM and 0.140 μM for Ni²⁺, 14.95 nM and 0.174 μM for Fe²⁺, and 15.54 nM and 0.33 μM for Fe³⁺. Moreover, the DTC functionality on its backbone facilitates effective interaction with the aforementioned heavy metals, subsequently removing them from water (except Fe²⁺ and Fe³⁺), validating its dual functionality as both an indicator and a purifier for heavy metals in water. The polymer exhibited a maximum adsorption capacity of 192.30 mg/g for Cu²⁺, 159.74 mg/g for Co²⁺, and 181.81 mg/g for Ni²⁺. Furthermore, this approach exhibits versatility in crafting fluorescent polymers with adjustable attributes that are suitable for a wide range of applications.","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigate the Processability of Biobased Thermoplastics Used in Nonwoven Fabrics","authors":"Aravin Prince Periyasamy*,&nbsp;Enni Luoma,&nbsp;Tim Höhnemann,&nbsp;Simon Ringger and Pirjo Heikkilä,&nbsp;","doi":"10.1021/acspolymersau.4c0002310.1021/acspolymersau.4c00023","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00023https://doi.org/10.1021/acspolymersau.4c00023","url":null,"abstract":"<p >The Covid-19 pandemic increased enormously the manufacturing and usage of face masks and other personal protective equipment (PPE), resulting in accumulation of plastic waste and, thus, causing universal environmental concerns. In addressing the issue of waste reduction and finding alternatives for fossil-based products, investigation of different biobased and biodegradable polymers plays a crucial role. This study examines the processability characteristics of three commonly used biobased polymers available in the market: biobased poly(lactic acid) (PLA), partly biobased and biodegradable poly(butylene succinate) (PBS), and biobased high-density poly(ethylene) (BioHDPE). The investigation combines substantial polymer analysis with subsequent processability trials in two different spunmelt processes, namely, meltblow (MB) and the Nanoval technology, aiming to reveal the differences and difficulties in the processing behavior and pointing out advantages and/or disadvantages of the respective polymer/technology combination. In general, the observed processability behavior and outcomes indicate that within the used processes PLA exhibits superior processability compared to PBS and BioHDPE. Both the meltblow and Nanoval processing of PLA demonstrated a consistent production of fibers and efficient uptake without any compromise on the throughput. In contrast, the processing of PBS using Nanoval required the utilization of significantly elevated temperatures, as indicated by a rheological study. Furthermore, the rheological evaluation revealed that the viscosity of BioHDPE was excessively elevated, rendering it unsuitable for effective processing by the Nanoval method. The microfibers in the PLA-based meltblown fabric had a higher surface area, explaining why the PLA fibers were able to function as a barrier and, thus, contribute to the mitigation of air permeability adjustable between 500 and 1000 l·s^–1·m^–2 and thus competitive or even superior to PP nonwovens of the same fiber diameter and base weight (1480 l·s^–1·m^–2). Overall, these results showed that PLA can be an alternative raw material for fossil-based nonwovens of PPE applying, especially, the meltblown technique.</p>","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"4 5","pages":"405–419 405–419"},"PeriodicalIF":4.7,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acspolymersau.4c00023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142402908","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":"Investigate the Processability of Biobased Thermoplastics Used in Nonwoven Fabrics","authors":"Aravin Prince Periyasamy, Enni Luoma, Tim Höhnemann, Simon Ringger, Pirjo Heikkilä","doi":"10.1021/acspolymersau.4c00023","DOIUrl":"https://doi.org/10.1021/acspolymersau.4c00023","url":null,"abstract":"The Covid-19 pandemic increased enormously the manufacturing and usage of face masks and other personal protective equipment (PPE), resulting in accumulation of plastic waste and, thus, causing universal environmental concerns. In addressing the issue of waste reduction and finding alternatives for fossil-based products, investigation of different biobased and biodegradable polymers plays a crucial role. This study examines the processability characteristics of three commonly used biobased polymers available in the market: biobased poly(lactic acid) (PLA), partly biobased and biodegradable poly(butylene succinate) (PBS), and biobased high-density poly(ethylene) (BioHDPE). The investigation combines substantial polymer analysis with subsequent processability trials in two different spunmelt processes, namely, meltblow (MB) and the Nanoval technology, aiming to reveal the differences and difficulties in the processing behavior and pointing out advantages and/or disadvantages of the respective polymer/technology combination. In general, the observed processability behavior and outcomes indicate that within the used processes PLA exhibits superior processability compared to PBS and BioHDPE. Both the meltblow and Nanoval processing of PLA demonstrated a consistent production of fibers and efficient uptake without any compromise on the throughput. In contrast, the processing of PBS using Nanoval required the utilization of significantly elevated temperatures, as indicated by a rheological study. Furthermore, the rheological evaluation revealed that the viscosity of BioHDPE was excessively elevated, rendering it unsuitable for effective processing by the Nanoval method. The microfibers in the PLA-based meltblown fabric had a higher surface area, explaining why the PLA fibers were able to function as a barrier and, thus, contribute to the mitigation of air permeability adjustable between 500 and 1000 l·s^–1·m^–2 and thus competitive or even superior to PP nonwovens of the same fiber diameter and base weight (1480 l·s^–1·m^–2). Overall, these results showed that PLA can be an alternative raw material for fossil-based nonwovens of PPE applying, especially, the meltblown technique.","PeriodicalId":72049,"journal":{"name":"ACS polymers Au","volume":"157 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}