Polymer最新文献_第4页

Molecular design of effective compatibilizers of a crystalline polymer Blend

IF 4.1 2区化学

Polymer Pub Date : 2025-04-11 DOI: 10.1016/j.polymer.2025.128385

Bailey Eberle, Timothy Taylor, Mark Dadmun

{"title":"Molecular design of effective compatibilizers of a crystalline polymer Blend","authors":"Bailey Eberle, Timothy Taylor, Mark Dadmun","doi":"10.1016/j.polymer.2025.128385","DOIUrl":"10.1016/j.polymer.2025.128385","url":null,"abstract":"<div><div>Managing the end-of-life of plastics is a challenging problem for a variety of reasons, including the complexity of recycling mixed waste streams. This is due to the inherent immiscibility of different polymers. One method to improve the properties of immiscible polymer pairs is through compatibilization. This study is designed to provide insight into the molecular mechanisms that result in the effective compatibilization of immiscible polymer blends that contain crystalline polymers, as crystalline polymers are a dominant fraction of the waste stream. In this study, the immiscible polymer pair examined contains polyvinyl chloride (PVC) and a polyolefin, as this pair of polymers is difficult to sort and make up a significant portion of commercial polymers in the waste stream. In these studies, the strength of the interface between amorphous poly(vinyl) chloride (PVC) and semicrystalline polyolefin elastomer (POE) compatibilized with chlorinated polyethylene (c-PE) are monitored as well as the strength of the interface between each homopolymer-compatibilizer pair. The results of this research show improvement in the interfacial adhesion at the c-PE/POE, c-PE/PVC and PVC/c-PE/POE interfaces as the blockiness of c-PE increases, which is interpreted to indicate that the entanglement of the compatibilizer with both the amorphous and semicrystalline phases is necessary to effectively compatibilize the biphasic interface. Further DSC, SAXS, and WAXS data provide evidence that semicrystalline compatibilizers can co-crystallize with the polyolefin elastomers, indicating that the co-crystallization can further strengthen the biphasic interface. Thus, this research provides insight into the molecular design of effective compatibilizers and the molecular level mechanisms that occur in compatibilized phase separated amorphous/crystalline polymer blends.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"327 ","pages":"Article 128385"},"PeriodicalIF":4.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dual dynamic bonds enable biocompatible polyurethane hydrogels with superior toughness, fatigue and puncture resistance, pH-reversibility, and room-temperature self-healability

IF 4.1 2区化学

Polymer Pub Date : 2025-04-11 DOI: 10.1016/j.polymer.2025.128381

Enhao Zheng , Peikai Zhang , Jilan Wang , Yongkang Chen , Haoxin Liu , Jing Xu , Zhaosheng Hou

{"title":"Dual dynamic bonds enable biocompatible polyurethane hydrogels with superior toughness, fatigue and puncture resistance, pH-reversibility, and room-temperature self-healability","authors":"Enhao Zheng , Peikai Zhang , Jilan Wang , Yongkang Chen , Haoxin Liu , Jing Xu , Zhaosheng Hou","doi":"10.1016/j.polymer.2025.128381","DOIUrl":"10.1016/j.polymer.2025.128381","url":null,"abstract":"<div><div>Intelligent hydrogels with remarkable mechanical properties and biocompatibility have significant potential in biomedical applications. However, preparing such hydrogels often involves a complex synthesis process, presenting a considerable challenge. This study developed a new polyurethane hydrogel (NPUG) using a simple pre-polymerization and solvent-exchange strategy through the synergistic combination of covalent acylhydrazone bond and noncovalent H-bond crosslinking. Due to the dual-crosslinked structures, the fabricated NPUG hydrogels possessed commendable tensile and compressive properties, with NPUG−III exhibiting tensile stress of 95.1 kPa, tensile elongation of 686.0 %, fracture toughness of 336.0 kJ m<sup>−3</sup>, and compressive stress of 214.0 kPa (under 90 % compressive deformation). Meanwhile, the NPUG hydrogels displayed exceptional fatigue resistance, shape-recovery capacities, and puncture resistance as evidenced by cyclic tensile, cyclic compression, and puncture testing. The dual dynamic reversible bonds conferred the hydrogels with high self-healing efficiency (up to 97.5 % after autogenous healing at room temperature for 2.0 h) and repeated pH-responsive gel−sol transition capacities. Furthermore, cytotoxicity evaluations (cell viability >90 %) and hemolysis tests (hemolysis ratio <3.5 %) confirmed the excellent biocompatibility of the hydrogels. Hence, the dual dynamically crosslinked hydrogels, characterized by their high toughness, fatigue resistance, puncture resistance, pH-reversibility, room-temperature self-healing, and biocompatibility, represent promising candidates for various bioengineering applications.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"327 ","pages":"Article 128381"},"PeriodicalIF":4.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Polypropylene-based phase change films with enhanced optical properties achieved by hydrophilic coating for remarkable cooling performance

IF 4.1 2区化学

Polymer Pub Date : 2025-04-11 DOI: 10.1016/j.polymer.2025.128364

Xinlong Wang , Xinpeng Hu , Zhanjin Shi , Xianrong Huang , Xiang Lu , Jinping Qu

{"title":"Polypropylene-based phase change films with enhanced optical properties achieved by hydrophilic coating for remarkable cooling performance","authors":"Xinlong Wang , Xinpeng Hu , Zhanjin Shi , Xianrong Huang , Xiang Lu , Jinping Qu","doi":"10.1016/j.polymer.2025.128364","DOIUrl":"10.1016/j.polymer.2025.128364","url":null,"abstract":"<div><div>Heat waves, increasing in frequency, pose significant risks to human health and economic stability. Traditional personal cooling technologies, such as Heating Ventilation and Air Conditioning (HVAC) systems, are energy-intensive and contribute to greenhouse gas emissions, necessitating the development of energy-efficient alternatives. Radiative cooling fabrics (RCFs) could be an ideal method for personal thermal management, while conventional petroleum-based fabrics exhibit low reflectivity and emissivity, limiting their cooling performance. This research introduces hybrid cooling films by incorporating phase change capsules (PCCs) into polypropylene (PP) films treated with a lysozyme-phytic acid coating to enhance hydrophilicity. The resulting RCFs demonstrated significantly improved reflectivity, emissivity and a high latent heat of 108.63 J/g, achieving a cooling performance of 4.62 °C. These findings highlight a scalable approach for manufacturing advanced textiles, contributing to more efficient thermal management strategies in response to rising global temperatures.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"327 ","pages":"Article 128364"},"PeriodicalIF":4.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Crystallization Behavior and Morphology of Propylene-Ethylene Copolymers: Tailoring Properties by Molecular Catalysis

IF 4.6 2区化学

Polymer Pub Date : 2025-04-11 DOI: 10.1016/j.polymer.2025.128394

Angelo Giordano, Anna Perfetto, Miriam Scoti, Fabio De Stefano, Giovanni Talarico, Dario Liguori, Fabrizio Piemontesi, Rocco Di Girolamo, Claudio De Rosa

{"title":"Crystallization Behavior and Morphology of Propylene-Ethylene Copolymers: Tailoring Properties by Molecular Catalysis","authors":"Angelo Giordano, Anna Perfetto, Miriam Scoti, Fabio De Stefano, Giovanni Talarico, Dario Liguori, Fabrizio Piemontesi, Rocco Di Girolamo, Claudio De Rosa","doi":"10.1016/j.polymer.2025.128394","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128394","url":null,"abstract":"Random propene-ethylene copolymers were synthesized in the whole range of comonomer composition from 0.4 to 84 wt% of ethylene (C2) with an isospecific metallocene catalyst. For some samples, the catalyst was supported on suitable supports. The crystallization behavior and morphology have been analyzed and correlated with the mechanical properties. Copolymers with low C2 concentration up to 16 wt% crystallize in α or γ forms of isotactic polypropylene (iPP), whereas copolymers with high C2 concentration from 65 to 84 wt% crystallize in the orthorhombic form of polyethylene (PE) and samples with C2 concentration from 26 to 60 wt% are amorphous. The high molecular weight and the uniform comonomer concentration in the whole composition range achieved thanks to the utilized synthetic strategy based on the use of a metallocene catalyst, have allowed production of materials with mechanical properties ranging from high stiffness and strength to high flexibility and ductility, to remarkable elasticity. Elastic properties develop for C2 concentrations from 14 to 16 wt% in samples showing iPP crystallinity and from 60 to 75 wt% in samples showing PE crystallinity. The mechanical properties and elastic behavior have been explained and correlated with the crystallization behavior and crystal morphology. In particular, the experimental values of stress at yielding have been correlated with the values of thickness of crystalline lamellae, estimated from the small-angle X-ray scattering (SAXS) data, whereas the observed elastic properties have been explained by the revealed interwoven crystal morphology.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"113 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Pentiptycene Ether Sulfone Macromonomers for the Synthesis of Polymers of Intrinsic Microporosity

IF 4.6 2区化学

Polymer Pub Date : 2025-04-11 DOI: 10.1016/j.polymer.2025.128390

Ashton R. Davis, Timothy M. Swager

引用次数: 0

3,4-Difluoropyridine based polymer additives for optimizing aggregation and phase separation enable 20.07 % efficiency layer-by-layer organic solar cells

IF 4.1 2区化学

Polymer Pub Date : 2025-04-10 DOI: 10.1016/j.polymer.2025.128380

Chunhong Zhou , Xingjian Dai , Chentong Liao , Xiaopeng Xu , Qiang Peng

{"title":"3,4-Difluoropyridine based polymer additives for optimizing aggregation and phase separation enable 20.07 % efficiency layer-by-layer organic solar cells","authors":"Chunhong Zhou , Xingjian Dai , Chentong Liao , Xiaopeng Xu , Qiang Peng","doi":"10.1016/j.polymer.2025.128380","DOIUrl":"10.1016/j.polymer.2025.128380","url":null,"abstract":"<div><div>Layer-by-layer (LbL) solution-processed organic solar cells (OSCs) have emerged as a promising approach for achieving controlled vertical phase separation and optimized donor-acceptor interfaces. However, precise morphology control still remains challenging for further elevating OSC performance. In this work, we report a molecular design strategy by utilizing conjugated polymer additives to optimize the active layer morphology for fabricating efficient LbL-OSCs. Three 3,4-difluoropyridine based polymers with systematically modified side chains, namely PDFN-H, PDFN-S and PDFN-F, have been prepared to regulate donor polymer aggregation and phase separation. Among them, PDFN-H additive demonstrated superior performance because of its lower miscibility with D18 donor, thus providing enhanced driving force for molecular packing and phase separation. Incorporation of 5 wt% PDFN-H led to a well-defined bicontinuous network morphology with improved charge transport pathways, finally resulting in an impressive power conversion efficiency (PCE) of 20.07 %. Detailed morphological and photophysical studies revealed that the enhanced performance stems from faster exciton dissociation, more balanced charge transport and suppressed recombination. This work demonstrates the effectiveness of rationally designed polymer additives for optimizing LbL-OSC performance and provides valuable insights for the development of more higher efficiency organic photovoltaic devices.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"327 ","pages":"Article 128380"},"PeriodicalIF":4.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Reassessment of the epitaxial mechanism of Poly(l-lactic acid) on polyethylene substrate 重新评估聚乳酸在聚乙烯基底上的外延机制

IF 4.1 2区化学

Polymer Pub Date : 2025-04-10 DOI: 10.1016/j.polymer.2025.128389

Yunpeng Li , Meilin Ma , Binghui Xu , Lin An , Rui Xin , Shouke Yan

{"title":"Reassessment of the epitaxial mechanism of Poly(l-lactic acid) on polyethylene substrate","authors":"Yunpeng Li , Meilin Ma , Binghui Xu , Lin An , Rui Xin , Shouke Yan","doi":"10.1016/j.polymer.2025.128389","DOIUrl":"10.1016/j.polymer.2025.128389","url":null,"abstract":"<div><div>Epitaxial crystallization of poly (<span>l</span>-lactic acid) (PLLA) on oriented polyethylene (PE) films with fold chain lamellar structure has been confirmed to produce cross-hatched edge-on lamellar structure with majority of PLLA lamellae aligned along the PE chain direction while minor PLLA lamellae inclined by 64° to the PE chain direction. The origin of the major PLLA lamellae has been correlated to a soft epitaxy, also referred to as graphoepitaxy, based on the alignment of PLLA chains along the grooves made of alternatively arranged PE crystalline and amorphous regions. Here in this study, oriented PE films with fibril structure have been prepared and crystallization of PLLA on them has been studied in detail by atomic force microscopy and transmission electron microscopy combined with electron diffraction. It has been found that PLLA can also grow epitaxially on these PE films, and the epitaxial crystallization results in essentially the same lamellar structure. This is clearly against the previous explanation of soft epitaxy, since grooves in PE film with fibril crystals are along its molecular chain direction. It has, therefore, been correlated to the heteroepitaxy based on an excellent matching between (<em>hk</em>0) lattice planes of PE and (00<em>l</em>) lattice planes of PLLA, especially the one between (110) and (007) lattice planes of PE and PLLA with a discrepancy of only 0.3 %. Although the mismatching between <em>d</em><sub>(100)</sub> of PE and <em>d</em><sub>(004)</sub> of PLLA, ca. 2.5 %, looks somewhat inferior, it is actually more feasible to realize the epitaxy from the view of molecular topology.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"327 ","pages":"Article 128389"},"PeriodicalIF":4.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 backbone and side chain engineering on crystalline orientation and charge transport of conjugated polymers in field-effect transistors

IF 4.1 2区化学

Polymer Pub Date : 2025-04-10 DOI: 10.1016/j.polymer.2025.128391

Shuting Yi, Hao Zheng, Juan Peng

{"title":"Synergistic backbone and side chain engineering on crystalline orientation and charge transport of conjugated polymers in field-effect transistors","authors":"Shuting Yi, Hao Zheng, Juan Peng","doi":"10.1016/j.polymer.2025.128391","DOIUrl":"10.1016/j.polymer.2025.128391","url":null,"abstract":"<div><div>Precise control of molecular packing and crystalline orientation in conjugated polymer thin films is crucial for establishing the structure-property relationship in optoelectronic devices. However, achieving this control remains a significant challenge. Herein, we investigate the synergistic effects of backbone and side chain engineering on molecular packing and crystalline orientation in a series of polythiophene derivatives and establish the correlation between their crystalline structures and organic field-effect transistor (OFET) performance. Specifically, the derivatives include poly (3-dodecylthiophene) (C12), poly (2,5-bis(3-dodecylthiophen-2-yl)thiophene) (T-C12), poly (2,5-bis(3-dodecylthiophen-2-yl)thieno [3,2-<em>b</em>]thiophene) (TT-C12), poly (2,6-bis(3-dodecylthiophen-2-yl)dithieno [3,2-<em>b</em>:2′,3′-<em>d</em>]thiophene) (TTT-C12) with different unsubstituted thiophene units in the backbone, along with TTT derivatives bearing varying alkyl side chains (hexyl, decyl, and tetradecyl, denoted as TTT-C6, TTT-C10, and TTT-C14, respectively). Remarkably, TT-C12, with its moderate thiophene units, facilitates the formation of edge-on crystallites with enhanced ordering and orientation. Moreover, TTT-C14, with the longest alkyl side chains, promotes more ordered edge-on crystallites than the other two TTT-C6 and TTT-C10. The charge transport characteristics of these polymers are closely linked to variations in their crystalline structures. This work underscores the effectiveness of molecular engineering in tailoring the crystalline orientation and charge transport. As a model system, the deep insights into the structure-property relationships of polythiophene derivatives can be extended to other conjugated polymers for high-performance optoelectronic devices.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"327 ","pages":"Article 128391"},"PeriodicalIF":4.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Phase behavior and hydrate crystallization kinetics in polyoxacyclobutane−water mixtures: Effects of molecular weight

IF 4.6 2区化学

Polymer Pub Date : 2025-04-10 DOI: 10.1016/j.polymer.2025.128363

Sudesna Banerjee, Emily F. Barker, Tara Meyer, Sachin S. Velankar

{"title":"Phase behavior and hydrate crystallization kinetics in polyoxacyclobutane−water mixtures: Effects of molecular weight","authors":"Sudesna Banerjee, Emily F. Barker, Tara Meyer, Sachin S. Velankar","doi":"10.1016/j.polymer.2025.128363","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128363","url":null,"abstract":"Polyoxacyclobutane, -[(CH<sub>2</sub>)<sub>3</sub>-O-]<sub>n</sub> has the unusual ability to co-crystallize with water to form a hydrate. But above the hydrate melting temperature, POCB/water mixtures phase separate into a liquid-liquid equilibrium state. Thus, the POCB-water system appears to be the only example of a polymer co-crystallizing with a solvent with which it is immiscible in the amorphous state. We examine the dependence of phase behavior and hydrate crystallization kinetics on the POCB molecular weight. In the molecular weight range from ∼1 kg/mol to ∼12 kg/mol, the hydrate melting temperature is found to be nearly insensitive to molecular weight. Above the hydrate melting temperature, the mixtures are in liquid-liquid equilibrium where the water-rich phase is nearly pure at all molecular weights, whereas the fraction of water in the POCB-rich phase decreases with increasing molecular weight. We also examine isothermal hydrate spherulite growth, which occurs exclusively within the POCB-rich phase. The spherulite growth velocity is found to decrease with increasing molecular weight regardless of whether samples are compared at fixed temperature or fixed undercooling. The spherulite growth velocity of the POCB hydrate is orders of magnitude higher than of pure POCB at the same temperature indicating that, as long as sufficient water is available, hydrate co-crystallization will always outcompete POCB homopolymer crystallization.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"14 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Phosphatidylcholine toughed phenolic foam with highly improved toughness and fire safety

IF 4.1 2区化学

Polymer Pub Date : 2025-04-10 DOI: 10.1016/j.polymer.2025.128392

Peng-Gang Su , Hai-Bo Zhao , Xi Zhao , Yu-Chuan Zhang , Zi-Chen Peng , Fu-Rong Zeng , Yuan-Wei Yan , Yu-Zhong Wang

{"title":"Phosphatidylcholine toughed phenolic foam with highly improved toughness and fire safety","authors":"Peng-Gang Su , Hai-Bo Zhao , Xi Zhao , Yu-Chuan Zhang , Zi-Chen Peng , Fu-Rong Zeng , Yuan-Wei Yan , Yu-Zhong Wang","doi":"10.1016/j.polymer.2025.128392","DOIUrl":"10.1016/j.polymer.2025.128392","url":null,"abstract":"<div><div>Phenolic foams (PF) are pivotal materials for insulation applications but are plagued by high friability. Achieving mechanical toughening and smoke suppression without sacrificing its inherent flame retardancy advantages remains a great challenge. In this work, we demonstrate the high efficiency of phosphate- and ammonium-containing phosphatidylcholine (L) in simultaneously imparting PF with excellent mechanical toughness, flame retardancy, and smoke suppression. By employing long flexible alkyl chains, ionic group-mediated interactions, and in situ-formed nanopores, remarkable enhancements in displacement (+32.7 %) and impact toughness (+49.6 %) are achieved, where the porous structures remain intact even after mechanical tests. Notably, the addition of L does not destroy but greatly improves the thermal insulation and fire safety of PF. Upon exposure to fire, phosphate and ammonium groups degrade into abundant noncombustible gases and phosphorus species to dilute flammable gases, terminate radicals, and form intact physical protective barriers, synergistically improving fire safety. The resulting L1-PF exhibited a highly improved limiting oxygen index of 44 %, UL-94 V0 rating, heat release decrease of 27.8 %, and fire spread rate decrease of 47.7 % at a low L loading of 1 wt%. Moreover, a remarkable decrease of 53.1 % in smoke density over that of pure PF is achieved upon further increase in L, collectively revealing its high efficiency and multifunctional integration on improving toughness and fire safety. This work presents an efficient way to address the pressing issue of PF to simultaneously achieve toughness enhancement and smoke suppression without sacrificing its inherent flame retardancy.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"327 ","pages":"Article 128392"},"PeriodicalIF":4.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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