Polymer Degradation and Stability最新文献

{"title":"Phytic acid-chelated Fe/Ni bimetallic zeolite framework for catalytic detoxification and flame retardancy","authors":"Lei Yu ,&nbsp;Guochao Yang ,&nbsp;Xuanye Wang ,&nbsp;Zhengqiang Fan ,&nbsp;Jian Fang ,&nbsp;Jing He ,&nbsp;Qiuhui Zhang","doi":"10.1016/j.polymdegradstab.2025.111913","DOIUrl":"10.1016/j.polymdegradstab.2025.111913","url":null,"abstract":"<div><div>The intrinsic flammability and dense smoke emission of rigid polyurethane foam (RPUF) critically limit its applications. Herein, a multifunctional hybrid coating was constructed via an in-situ strategy, wherein phytic acid (PA) chelates with Fe/Ni-loaded ZSM-5 zeolite (Fe-Ni-Z). The resulting composite, RPUF@PA/Fe-Ni-Z, achieved a UL-94 V-0 rating and a limiting oxygen index of 35.1%, with its char residual yield at 800 °C increasing by a remarkable 1434.47%. Cone calorimetry revealed a 45.06% reduction in peak heat release rate and a 58.33% decrease in peak smoke production rate. This performance is attributed to a synergistic integration of condensed- and gas-phase mechanisms: PA promotes the formation of a phosphorus-rich char layer, which is structurally enhanced by Fe-Ni-Z, while the bimetallic sites catalytically oxidize CO and other toxic volatiles via the Mars-van Krevelen mechanism. The formation of a highly graphitized, Fe-Ni-Z-reinforced char layer was confirmed by Raman spectroscopy. This facile approach demonstrates a new paradigm for designing advanced fire safety materials that combines physical barrier protection with active catalytic detoxification, offering significant potential for improving fire safety in applications such as construction, packaging, and furniture.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"245 ","pages":"Article 111913"},"PeriodicalIF":7.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922081","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}

{"title":"Multifunctional epoxy-based composites: Integrating graphene, zinc, and silicon dioxide for superior mechanical and corrosion performance","authors":"Reetik Singh,&nbsp;Sanat Kumar Mukherjee","doi":"10.1016/j.polymdegradstab.2025.111904","DOIUrl":"10.1016/j.polymdegradstab.2025.111904","url":null,"abstract":"<div><div>This study presents a novel nanocomposite coating based on SiO₂-decorated graphene nanosheets, developed to enhance the mechanical and anticorrosion durability of aerospace-grade aluminium alloy AA7075. This research investigates the synergistic effects of incorporating 1 wt% each of graphene, zinc, and silica nanoparticles into an epoxy matrix using high-shear dispersion. The resulting nanocomposites were applied as protective coatings on aluminium alloy and evaluated under aggressive environmental conditions. Corrosion resistance was assessed through electrochemical impedance spectroscopy (EIS), and salt spray exposure. Mechanical properties, including adhesion, scratch resistance, and penetration depth, along with surface wettability via contact angle measurements, were also examined. EIS confirmed enhanced barrier performance, showing ⃒Z⃒_0.01 Hz and charge transfer resistance (R_ct) above 10⁸ Ω.cm² even after 72 h in 3.5 % NaCl solution. The graphene-zinc-SiO₂ coating also achieved a scratch hardness of 1.65 GPa, markedly higher than the 0.21 GPa of the pure epoxy.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"245 ","pages":"Article 111904"},"PeriodicalIF":7.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922160","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}

{"title":"Multifunctional reactive P-N flame retardant for enhanced flame retardancy, mechanical properties and fatigue resistance of EVA-based cable materials via interfacial compatibilization and regional melting refinement of organic-inorganic interface","authors":"Ping Wang ,&nbsp;Hongyu Tian ,&nbsp;Yiyang Zhou ,&nbsp;Tongtong Zhang ,&nbsp;Shi Dong ,&nbsp;Longen Cheng ,&nbsp;Wenbin Luo ,&nbsp;Li Yang ,&nbsp;Wenxiu Liu ,&nbsp;Tian Cao ,&nbsp;Mingdi Yang ,&nbsp;Daosheng Sun","doi":"10.1016/j.polymdegradstab.2025.111877","DOIUrl":"10.1016/j.polymdegradstab.2025.111877","url":null,"abstract":"<div><div>Developing high-performance composites for maglev train cables that combine excellent flame retardancy, mechanical properties and fatigue resistance is currently a significant challenge in special cable industry. Herein, a multifunctional reactive phosphorus nitrogen flame retardants (UPMDM) with flame retardant and filler surface modification functions was synthesized, and it was employed to control the polymer matrix-filler interactions and the microstructure of ethylene-vinyl acetate copolymer (EVA)-based composite during melt blending. Phosphorus-nitrogen composite flame retardant (MH@UPMDM) could be preformed before melt blending or formed in-situ during melt blending by the reaction between the isocyanate group (-NCO) of UPMDM and the hydroxyl group on the surface of magnesium hydroxide (MH), and the effect of processing type (physical blending/chemical grafting/in-situ reaction) on dispersion kinetics of MH in EVA matrix was investigated. The results indicate preformed MH@UPMDM can play a role in rigid crosslinkers to construct organic-inorganic hybrid network, thus effectively control the dispersion kinetics of the fillers and the filler-matrix interaction in the EVA matrix. Compared with EVA/MH composites, the elongation of EVA/MH@UPMDM composites is increased by nearly 2.2-fold, while it also exhibits an excellent fatigue-resistance under 1.0 × 10⁴th cycles. Furthermore, MH@UPMDM can significantly enhance the flame retardant properties of the composites, the limiting oxygen index (LOI) of EVA/MH@UPMDM composite reaches 33.6 %, while its peak heat release rate (PHRR) and total heat release (THR) decreases to 277.82 kW/m² and 74.71 MJ/m² from 436.66 kW/m² and 88.67 MJ/m² compared to EVA/MH composites, which may be attributed to the multi-phase synergistic flame retardant mechanism of UPMDM.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"245 ","pages":"Article 111877"},"PeriodicalIF":7.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922114","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}

{"title":"Integrated electromagnetic shielding and flame retardancy in coated fabrics through synergistic NiZnFe2O4@MnO2/graphene aerogel and APP","authors":"Peiyong Ren ,&nbsp;Xiaori Yang ,&nbsp;Ziyu Wang ,&nbsp;Jinwei Yang ,&nbsp;Xiaoping Gao ,&nbsp;Xin Jiang","doi":"10.1016/j.polymdegradstab.2025.111859","DOIUrl":"10.1016/j.polymdegradstab.2025.111859","url":null,"abstract":"<div><div>With the rapid development of communication technologies, the demand for multifunctional textiles with both electromagnetic interference (EMI) shielding and flame retardancy has intensified. In this study, a graphene-based composite aerogel doped with NiZnFe₂O₄@MnO₂ core-shell microspheres (NiZnFe₂O₄@MnO₂/GA) was synthesized via hydrothermal reduction and subsequently integrated with ammonium polyphosphate (APP) into a waterborne polyurethane (WPU) matrix, which was coated onto aramid/stainless-steel textiles to produce a multifunctional fabric. Interfacial bonding was strengthened through chemical crosslinking, providing a structural basis for the integrated electromagnetic and thermal functions. The EMI shielding and flame-retardant performances of the coated fabrics were systematically evaluated to clarify their synergistic enhancement mechanisms. The three-dimensional (3D) conductive-magnetic network of the NiZnFe₂O₄@MnO₂/GA heterostructure induced strong interfacial polarization losses, achieving a total shielding effectiveness (SE_T) of 44.5 dB at only 2 wt% loading with a 77 % absorption contribution. Meanwhile, the synergy between NiZnFe₂O₄@MnO₂/GA and APP produced a dual flame-retardant mechanism by stabilizing the char layer and diluting flammable gases. The peak heat release rate (pHRR), total heat release (THR), total smoke production (TSP), and peak CO production (pCO) were reduced by 45.9 %, 53.9 %, 48.1 %, and 85.2 %, respectively, compared with pure WPU-coated fabrics. These findings provide a viable strategy for designing lightweight, flexible fabrics with integrated electromagnetic and thermal protection.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"245 ","pages":"Article 111859"},"PeriodicalIF":7.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145760746","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}

{"title":"High-dose gamma irradiation effects on HDPE/SiO2 nanocomposite films: Structure, crystallinity, defects, radiation endurance, dispersion, and interfacial behavior","authors":"A.A. Nabiyev ,&nbsp;O.I. Ivankov ,&nbsp;A.K. Azhibekov ,&nbsp;A.H.A. Elmekawy ,&nbsp;E. Popov ,&nbsp;S.F. Samadov ,&nbsp;N.V.M. Trung ,&nbsp;A.K. Mutali ,&nbsp;A.A. Sidorin ,&nbsp;O.S. Orlov ,&nbsp;A.I. Kuklin","doi":"10.1016/j.polymdegradstab.2025.111851","DOIUrl":"10.1016/j.polymdegradstab.2025.111851","url":null,"abstract":"<div><div>This paper presents the findings of a study on the effects of gamma radiation on the structural and thermal characteristics of high-density polyethylene nanocomposite films. These thin films consist of a combination of high-density polyethylene (HDPE) and nano-SiO₂ particles prepared by hydrostatic thermal pressing a mixture of HDPE powder and nano-SiO₂ in various volume concentrations (ω = 1 %, 5 %, 10 %, and 20 %). Radiation-induced defects and microstructural changes in HDPE nanocomposite films containing embedded nano-SiO₂ particles were investigated under high-dose gamma irradiation (100–500 kGy). DBAS analysis revealed that SiO₂ nanoparticles effectively suppress radiation-induced defect formation and positronium formation across most doses through void-filling and interfacial positron trapping mechanisms. Defect evolution showed a transition from chain scission-dominated behavior (increasing defects up to 300 kGy) to crosslinking dominance at 500 kGy, with SiO₂ significantly mitigating both processes. However, at the critical dose of 300 kGy, where crystallinity (66.2 %) and structural reorganization peak, anomalous defect behavior was observed for 1 % and 20 % SiO₂ loadings, attributed to insufficient structural constraint and interfacial stress concentration, respectively. Electron momentum distribution (EMD) analysis confirmed carbonyl group (C = O) formation during oxidative degradation. Optimal radiation resistance was achieved with 5–10 vol% SiO₂ at doses up to 300 kGy, consistent with SAXS and WAXS findings.</div><div>These results provide fundamental insights into radiation resistance mechanisms and support the design of HDPE/SiO₂ nanocomposites for use in high-dose radiation environments.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"245 ","pages":"Article 111851"},"PeriodicalIF":7.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789183","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}

{"title":"Hygrothermal behavior of jute/PLA composites: assessment of hygroscopic internal stress and its impact on service life","authors":"Ning Jiang ,&nbsp;Guangxin Li ,&nbsp;Yihua Xu ,&nbsp;Yaomin Li ,&nbsp;Chaozhong Chen","doi":"10.1016/j.polymdegradstab.2025.111868","DOIUrl":"10.1016/j.polymdegradstab.2025.111868","url":null,"abstract":"<div><div>This study investigated the internal damage induced by transient hygroscopic stress in jute/PLA composites under hygrothermal conditions, and a mechanical prediction model was established based on the damage area. A finite element (FE) model, which incorporates the true microstructure of the short fiber reinforced composites, was established using X-ray computed tomography (XCT) and three-dimensional (3D) reconstruction techniques to accurately simulate water absorption and hygroscopic stress evolution behavior. The results of FE analysis of water absorption show good agreement with experimental measurements, indicating that the 3D model is crucial for accurately simulating the water diffusion process within the specimens. In the analysis, the locations of damage area were identified, and their content was quantified. The hygroscopic stress is the main cause of damage initiation in jute/PLA composites, leading to high variations in their mechanical properties and reducing long-term sustainability. Ultimately, by combining the time-temperature superposition (TTS) principle with a residual strength model for internal damage, a mechanical prediction model for plant fiber composites was established based on the damage area, providing accurate predictions of the composites’ mechanical properties. This approach offers an innovative methodology for evaluating the mechanical properties of such composites.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"245 ","pages":"Article 111868"},"PeriodicalIF":7.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789185","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}

{"title":"Effect of long-term electro-thermal-mechanical stresses on insulation degradation of biaxially oriented polypropylene films for dry direct-current capacitors application","authors":"Jiale Song ,&nbsp;Xiangrong Chen ,&nbsp;Zhuohan Li ,&nbsp;Xiaohe Chen ,&nbsp;Ashish Paramane","doi":"10.1016/j.polymdegradstab.2025.111875","DOIUrl":"10.1016/j.polymdegradstab.2025.111875","url":null,"abstract":"<div><div>As a key insulating medium in dry direct-current (DC) capacitors, biaxially oriented polypropylene (BOPP) film undergoes performance degradation under the long-term electro-thermal-mechanical multi-physics field, leading to failure of capacitor. To investigate the degradation mechanism of BOPP film’s insulation properties under long-term multi-physics field stress, a multi-stress aging platform and thermal pulse method (TPM) space charge testing platform were developed indigenously. The physicochemical properties, electrical properties, and space charge characteristics of 5.8 μm thick BOPP films were examined after aging at 150 kV/mm, 80 °C, and 10 N for 0 h, 168 h, 360 h, and 720 h. The results indicate that under prolonged multi-stress aging conditions, polypropylene molecular chains undergo scission, generating low molecular weight products. The size of surface defects, surface roughness, degree of crystallinity, and lamellar thickness gradually increased. The breakdown strength and inception voltage of internal discharge in the film decreased, whereas the discharge repetition rate increased. Successive injection of both positive and negative charges was observed within the films during the aging. The findings demonstrate that the breakdown performance is closely related to changes in charge injection and the internal structure of polypropylene. Increased space charge injection at the nanoscale leads to greater defect sizes and trap densities at the microscale, resulting in electric field distortion that frequently triggers the partial discharges and reduces breakdown strength at the macroscale.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"245 ","pages":"Article 111875"},"PeriodicalIF":7.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838552","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}

{"title":"High performance intrinsically flame-retardant bio-benzoxazine resin derived from 2,5-furandimethylene amine and sesamol: Synthesis and investigations of structure-property relationship","authors":"Weichen Sheng ,&nbsp;Min Zhong ,&nbsp;Yi Liu ,&nbsp;Junhong Zhang ,&nbsp;Tiancheng Zhao ,&nbsp;Fuping Xie ,&nbsp;Kan Zhang","doi":"10.1016/j.polymdegradstab.2025.111912","DOIUrl":"10.1016/j.polymdegradstab.2025.111912","url":null,"abstract":"<div><div>Conventional benzoxazines are largely limited by the dependence on non-renewable resources, insufficient thermal stability, and poor flame retardance properties. This study presents two high-performance monofuran-diamine-type difunctional bio-benzoxazine monomers (MDOPH-fda and DMOPH-fda), whiche were synthesized by reacting 2,5-bis(aminomethyl)furan and paraformaldehyde with either sesamol or 3,4-dimethoxyphenol. The benzoxazine structure was validated using FT-IR, ¹H NMR, ¹³C NMR, HMQC NMR, and HR-MS. The polymerization behavior of the monomers was monitored by DSC and in situ FT-IR. The results demonstrated that the polymerization temperatures of the two benzoxazine monomers were close. The thermal stability and thermomechanical properties of polymers derived from the two benzoxazines were evaluated by TGA and DMA). Due to the monofuran-diamine linking structure that leads to the formation of two oxazine rings, both poly(MDOPH-fda) and poly(DMOPH-fda) exhibit good thermal stability. Their respective Td₁₀ values are 374.8 °C and 330.4 °C, and their char yields at 800 °C are 63.5% and 52.8%, respectively. Due to the benzodioxole structure, poly(MDOPH-fda) exhibit superior thermal stability. Regarding thermomechanical properties, the storage modulus of poly(MDOPH-fda) is 3364.8 MPa, while that of poly(DMOPH-fda) is 3856.1 MPa. Their glass transition temperatures (Tg) are 260 °C and 272 °C, respectively. While these values are close, both are higher than those of commercial benzoxazine resins. Experiments using a Microscale Combustion Calorimeter (MCC) and a vertical combustion test (UL-94) confirmed that the sesamol-based benzoxazine resin, poly(MDOPH-fda), exhibits excellent flame retardance. Its heat release capacity (HRC) is 38.7 J·g^-1·K^-1, and its total heat release (THR) is as low as 0.7 kJ·g^-1, reaching the UL-94 V0 level in the vertical combustion test. Analyses of the surface morphology and chemical composition of the residues after combustion using Scanning Electron Microscopy (SEM), X-ray Photoelectron Spectroscopy (XPS) and Raman Spectroscopy (LRS) show that poly(MDOPH-fda) is conducive to the formation of a dense graphitized carbon layer at high temperatures. This makies it a strong competitor in the field of high-performance flame-retardant resins.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"245 ","pages":"Article 111912"},"PeriodicalIF":7.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922083","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}

{"title":"Innovative flame resistant composite non-woven fabric from recycled ceramic and polyethylene terephthalate waste fibers","authors":"Lin Weng ,&nbsp;Xiaolin Zhang ,&nbsp;Danting Hui ,&nbsp;Yun Li","doi":"10.1016/j.polymdegradstab.2025.111869","DOIUrl":"10.1016/j.polymdegradstab.2025.111869","url":null,"abstract":"<div><div>Rapid economic growth has led to a surge in global textile consumption, overwhelming waste management infrastructure. Most non-degradable textiles are currently disposed of by landfilling or incineration, contributing to environmental pollution. To address this problem, we efficiently recycled waste into a fireproof composite, featuring a ceramic fiber middle layer and polyethylene terephthalate (PET) fiber outer layers, using sustainable opening, carding, needle punching and hot-pressing techniques. This composite has been certified with a V-0 rating in the UL-94 flammability test, confirming its exceptional flame resistance. Infrared thermal imaging analysis further confirms its excellent thermal insulation and ablative resistance capabilities. Furthermore, an in-depth study on the composition of combustion residue char and gaseous volatiles demonstrated no significant flame hazards and revealed that gas-phase dilution combined with ceramic fiber residue char, disrupted the flame-fuel interaction to inhibit combustion. This research provides a facile and eco-friendly strategy for cost-efficient recovery of waste textiles, not only minimizing resource wastage but also producing a high-value product, thus significantly reducing environmental pollution.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"245 ","pages":"Article 111869"},"PeriodicalIF":7.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789340","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}

{"title":"One-step synthesis of intrinsically flame-retardant polyamide 6 elastomers with excellent thermal stability and spinnability","authors":"Yuming Cui ,&nbsp;Qinglan Xue ,&nbsp;Haoyi Hu ,&nbsp;Kai Wang ,&nbsp;Yuhao Liu ,&nbsp;Jiaojiao Shang ,&nbsp;Jianwu Lan ,&nbsp;Shaojian Lin","doi":"10.1016/j.polymdegradstab.2025.111887","DOIUrl":"10.1016/j.polymdegradstab.2025.111887","url":null,"abstract":"<div><div>Thermoplastic polyamide elastomers (TPAEs) are an important class of thermoplastic elastomers (TPEs). However, improving their flame retardancy remains challenging, because such enhancement often leads to adverse effects on the intrinsic thermal stability and mechanical performance of the materials. In this study, a series of intrinsically flame-retardant TPAEs (PAE6-xDPPSA) were synthesized via a one-step melt polycondensation route by incorporating 2- (diphenylphosphinyl methyl) succinic acid (DPPSA) into a TPAE composed of polyamide 6 (PA6) as the hard segment and poly (tetramethylene glycol) (PTMG) as the soft segment. Importantly, the incorporation of DPPSA did not compromise the thermal stability of PA6 elastomers, all PAE6-xDPPSA samples exhibited 5 % weight-loss temperatures above 360 °C, indicating excellent thermal stability. As expected, the flame retardancy of PAE6-xDPPSA was enhanced with increasing DPPSA content, achieving a V-0 rating in UL-94 test and a limiting oxygen index (LOI) above 28 % at 8 wt% of DPPSA. This improvement in flame retardancy resulting from the existence of DPPSA promoted dual-action flame-retardant effects in both the gas phase and the condensed phase. Moreover, PAE6-xDPPSA displayed excellent spinnability and mechanical performance within an appropriate DPPSA content range. In particular, the elastic fibers derived from PAE6–8DPPSA exhibited a tensile strength of 1.82 cN/dtex and an elongation at break of 208.5 %, together with superior flame retardancy. Overall, this study presents an effective strategy for designing intrinsically flame-retardant TPAEs with balanced thermal stability, mechanical properties, and spinnability, paving the way for their potential applications in advanced flame-retardant elastic fibers and engineering materials.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"245 ","pages":"Article 111887"},"PeriodicalIF":7.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881200","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}