Polymer Engineering and Science最新文献

{"title":"Carbon Fiber Modification With <scp>CaCO₃</scp> Nanoparticles by Microwave‐Assisted Approach for Composite Reinforcement","authors":"Fuhong Yang, Jiaofeng Ye, Yanhua Liu, Jianbin Zhang, Changsheng Chai, Libang Feng","doi":"10.1002/pen.70014","DOIUrl":"https://doi.org/10.1002/pen.70014","url":null,"abstract":"ABSTRACT It is a great challenge for enhancing both strength and toughness of carbon fiber/epoxy resin (CFs/EP) composite at the same time. Generally, a long time is needed for CF surface modification for the traditional modification method. Herein, CaCO 3 nanoparticles are in situ prepared and deposited on CF surfaces rapidly and efficiently by a microwave‐assisted method. Then CaCO 3 ‐modified CFs are introduced into EP resin, and the effect of CaCO 3 nanoparticles on the mechanical properties of CFs/EP composite is investigated. Results show that both strength and toughness of CFs/EP composites are enhanced simultaneously. CaCO 3 ‐modified CFs/EP composites reveal an increase of 20.3%, 25.8%, 21.4%, and 40.1% in tensile strength, bending strength, impact strength, and interlaminar shear strength, respectively, as compared to those of pristine CFs/EP composite. The strengthening and toughening mechanism is attributed to the strong mechanical interlocking interfacial action between the modified CFs and EP resin matrix. Therefore, the research extends a novel concept for fibers with unique surface morphologies in strengthening polymer composite.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 8","pages":"4431-4439"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.70014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147912577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Mechanical Properties of Poly(dicyclopentadiene) Composites via Norbornene‐Functionalized Silica Nanomaterials","authors":"Feng Gao, Xian Wang, Shu Han, Xuelian He","doi":"10.1002/pen.27291","DOIUrl":"https://doi.org/10.1002/pen.27291","url":null,"abstract":"ABSTRACT Functionalizing inorganic fillers and strengthening their interfacial interactions with polymers is a highly effective strategy for improving the mechanical properties of polymer composites. We synthesize nano‐silica using an improved sol–gel method and selected 5‐(triethoxysilyl)‐2‐norbornene grafted silica to obtain NB‐modified SiO 2 nanoparticles, which are uniformly dispersed in dicyclopentadiene with an average particle size of 80.4 ± 1.0 nm and a narrow particle size distribution. The NB‐SiO 2 /PDCPD composite is synthesized via in situ polymerization under the catalysis of the Grubbs second‐generation catalyst. At an NB‐SiO 2 loading of 8 wt%, the composite exhibited a glass transition temperature of 141.2°C, representing a 19.9°C increase compared to pure PDCPD. Additionally, the crosslink density reaches 3.933 × 10 3 mol m −3 , reflecting an increment of about 367% compared to pure PDCPD. The enhancement in rigidity resulting from the modification of PDCPD by NB‐SiO 2 increases the tensile moduli. At an NB‐SiO 2 loading of 8 wt%, the tensile modulus increases by 18.3% to 2029 MPa.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 8","pages":"4250-4261"},"PeriodicalIF":0.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.27291","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147916223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Reinforced Epoxy Network With Novel Long Chain Branched Polyaryl Ether Ketone to Improve Phase Separation Morphology","authors":"X.M. Li, Donghan Li, Guangyuan Zhou, Haishui Wang","doi":"10.1002/pen.27297","DOIUrl":"https://doi.org/10.1002/pen.27297","url":null,"abstract":"ABSTRACT The incorporation of a second thermoplastic component into epoxy resin is an effective method for the enhancement of toughness. However, practical applications are generally challenged by issues like phase separation and the mass addition of toughening agents. Branched polymers have become an upgraded toughening agent due to the advantages of low viscosity and diverse reactive groups, enabling remarkable toughening effects. In this study, long‐chain polyaryl ether ketones (LCBPEKCs) with varying branching degrees were synthesized via nucleophilic polycondensation from bisphenol monomer phenolphthalein (PHT), difluorodiphenyl ketone (DFDBK), and trifunctional monomer 1,1,1‐tri (4‐hydroxyphenyl) ethane (THPE). The fundamental properties of LCBPEKCs were characterized, and they were applied to toughen the epoxy resin/methyl tetrahydrophthalic anhydride (E51/MTHPA) system. The branched structure and reactive end groups of long‐chain branched polyaryl ether ketones could effectively reduce the phase separation between the toughening agent and epoxy resin, significantly enhancing the toughness of epoxy resin. Among the various additives, the addition of LCBPEKC‐30 at just 5 phr contributed to a remarkable 109% increase in the impact strength of the cured epoxy system, which significantly improved its mechanical properties. Additionally, a detailed analysis of the toughening mechanism of LCBPEKC within the cured E51 system confirmed that both branched structures and active end groups exhibited crucial functions in the improvement of the network's properties.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 8","pages":"4301-4313"},"PeriodicalIF":0.0,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.27297","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and Water Absorption Performance of Absorbent Polymer Based on Flexible Polymer Network's Structure","authors":"Yanru Hou, Wenbo Li, Xin Ding, Jianying Ma, Chunlei Cao","doi":"10.1002/pen.27293","DOIUrl":"https://doi.org/10.1002/pen.27293","url":null,"abstract":"ABSTRACT Flexible polymer networks significantly influence the water absorption performance of water‐absorbent polymers. Here, we prepared a water‐absorbent polymer with a highly flexible network structure by incorporating thermoplastic elastomer styrene‐butadiene‐styrene (SBS) into the solution polymerization of acrylic acid (AA) and methyl methacrylate (MMA). The butadiene segments within the SBS molecular chain contribute to a highly flexible network structure. Moreover, in comparison with other water‐absorbing materials (e.g., polyacrylamide), the SBS system exhibits advantages including lower cost, simpler processing technology, and superior structural compatibility. L 16 (4 4 ) orthogonal experiments were designed and implemented to investigate the main factors that affected water absorption performance of the water‐absorbent polymer. Based on the orthogonal experiments, one‐way variable experiments were conducted to investigate the influence of SBS content, initiator content, polymerization temperature, and reaction time on water absorption performance, grafting ratio, and grafting efficiency. Experimental results showed the water absorption of SBS‐g‐AA/MMA reached 31.50 g/g in deionized water, while it still reached 5.25 g/g in physiological saline solution. The water absorption retention after multiple absorption‐drying cycles still reached 28 g/g, while the maximum value of weight loss was only 17.96%. This work enhances water absorption performance while reducing weight loss and improving recyclability, broadening water‑absorbent polymer applications in hygiene, agriculture, and beyond.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 8","pages":"4274-4285"},"PeriodicalIF":0.0,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147920199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multifunctional <scp>PVA</scp>/<scp>PANI</scp> Aerogels Featuring Dendritic Arm for Enhanced Tunable Microwave Absorption Property","authors":"Qianhe Ji, Deyun Liu, Shuai Liu, Lei Xu, Yaofeng Zhu, Huiya Wang","doi":"10.1002/pen.27290","DOIUrl":"https://doi.org/10.1002/pen.27290","url":null,"abstract":"ABSTRACT Designing electromagnetic wave‐absorbing materials (EMAs) with adjustable performance is crucial for adapting to constantly changing electromagnetic environments. Herein, a flexible polyvinyl alcohol/polyaniline (PPA) aerogel was fabricated through a one‐step process combining unidirectional freezing and low‐temperature polymerization. During this process, polyaniline (PANI) self‐assembles into a “coral‐like” nanostructure, which promotes the formation of secondary dendritic arms. These secondary dendritic arms are beneficial for enhancing wave absorption by improving the conductive network and heterogeneous interfaces. Consequently, the PPA aerogel achieves a minimum reflection loss (RL min ) of −26.85 dB and covers an effective absorption bandwidth (EAB) of 3.08 GHz (9.33–12.04 GHz) at a thickness of 3.8 mm. Additionally, the electromagnetic parameters can be dynamically tuned by adjusting the pore structure and conductive network through compression, enabling the control of wave‐absorbing performance. Furthermore, the high porosity of the aerogel limits convective heat transfer and reduces thermal radiation, which imparts excellent thermal insulation and infrared stealth. This work offers valuable guidance for developing multifunctional EMAs with adjustable absorption characteristics.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 8","pages":"4240-4249"},"PeriodicalIF":0.0,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Partially Biobased Self‐Repairing Poly(Aspartic Ester Polyurea) Coatings","authors":"Sevilay Dural, Sebnem Camadanlı, Nilhan Kayaman‐Apohan","doi":"10.1002/pen.27282","DOIUrl":"https://doi.org/10.1002/pen.27282","url":null,"abstract":"ABSTRACT Poly(aspartic ester polyurea) (PAEU) coating systems, which feature an uncatalyzed and solventless reaction, have attracted attention as a more environmentally friendly, nonreactive coating alternative in both academia and industry. In these coatings, achieving optimal performance requires an impeccable combination of aliphatic polyisocyanates and polyaspartic esters used as cross‐linking agents. In previous applications, petroleum‐based polyisocyanates were used as the second component. In this study, a biobased prepolymer was synthesized as the second component, thus creating a sustainable PAEU coating class without compromising traditional properties. It is known that traditional coatings can become damaged or cracked when exposed to external forces during processing or use. The coatings achieved the self‐healing feature by using varying amounts of disulfide to improve this situation. The samples were deliberately damaged and then allowed to heal for 1 h at room temperature, 40°C, and 80°C. The results demonstrated improved mechanical properties in all samples. Tensile strength increased by 79%–95%, and elongation recovery rates ranged from 73% to 97% after 1 h of room‐temperature repair. These mechanical test results were consistent with the SEM images for all samples.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 8","pages":"4155-4169"},"PeriodicalIF":0.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.27282","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147920339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the filtration performance of an amphoteric polymer fluid loss agent with functionalized titanium dioxide nanoparticles","authors":"Xin Tang, Weiqiang Luo, Yan Yang, Xiangyin Li","doi":"10.1002/pen.27251","DOIUrl":"https://doi.org/10.1002/pen.27251","url":null,"abstract":"Abstract To address the problem of failure of fluid loss agents in high‐temperature and high‐salinity environments, this study introduced surface‐functionalized titanium dioxide nanoparticles as reinforcing agents to improve the poor control of fluid loss in current fluid loss additives for deep‐well and high‐salinity cementing. It employs 2‐acrylamido‐2‐methylpropanesulfonic acid (AMPS), acrylic acid (AA), and a cationic monomer (LAM) as synthetic monomers and uses in situ polymerization to develop a fluid loss additive (FLA) with effective heat resistance and salt tolerance. The as‐prepared samples were characterized using X‐ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric (TG) analysis. Furthermore, the heat resistance, salt tolerance, compressive strength development, and thickening performance of the FLA were evaluated. The results revealed that the FLA met expectations, with a minimal weight loss of only 3.38% at 302.5°C. It effectively controlled fluid loss in the cement slurry to within 50 mL at 90–210°C and 6.9 MPa, demonstrating excellent salt tolerance at a 4.0% FLA dosage. Potential mechanisms for controlling filtration loss have been proposed. Overall, this study introduces a highly effective fluid loss additive with superior heat resistance and salt tolerance for cement slurry applications. Highlights A novel fluid loss additive (FLA) for cement slurries is synthesized via in situ polymerization. The FLA is stable, with no significant weight loss up to 372.3°C. The FLA exhibited excellent temperature and salt resistance. The incorporation of FLA into the cement slurry results in the formation of a thin and dense filter cake.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 8","pages":"3904-3916"},"PeriodicalIF":0.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.27251","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147879092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanocomposite‐enhanced polymeric weak gel for conformance control in high‐salinity and high‐temperature reservoir condition","authors":"Qingjie Ma, Jun Li, Rui Liu, Yajun Wu, Zuguo Yang, Beibei Wu, Yuxuan Yang, Wanfen Pu","doi":"10.1002/pen.27252","DOIUrl":"https://doi.org/10.1002/pen.27252","url":null,"abstract":"Abstract Polymeric hydrogels, known as blocking gel or disproportionate‐permeability‐reducer, have been highly successful in improving sweep efficiency and reducing excessive water cut by adjusting reservoir heterogeneity (Al‐Muntasheri and Zitha. Gel under dynamic stress in porous media: new insights using computed tomography. SPE Saudi Arabia Section Technical Symposium; 2009. Al‐Sharji, Grattoni, Dawe, et al. Pore‐scale study of the flow of oil and water through polymer gels. SPE Annual Technical Conference and Exhibition; 1999. Bai. Preformed particle gel for conformance control: factors affecting its properties and applications. SPE Reservoir Eval Eng. 2007;10:415–422). However, it remains an extremely challenging task to develop polymeric weak gel for in‐depth conformance control, simply because most in situ synthetic weak hydrogels suffer from loosely structured network and lack of efficient energy dissipation mechanism in harsh temperature environment (Bai, Leng, and Wei. A comprehensive review of in‐situ polymer gel simulation for conformance control. Pet Sci. 2022;19(1):189–202. Bhattacharya and Samanta. Soft‐nanocomposites of nanoparticles and nanocarbons with supramolecular and polymer gels and their applications. ACS Appl Mater Interfaces. 2016;8(19):21512. Bai, Zhou, and Yin. Comprehensive review of polyacrylamide polymer gels for conformance control. Pet Explor Dev . 2015;42(4):525–532). This paper introduces a low‐cost, high‐temperature resistant, polymer covalent weak gel system. Polyethylenimine (PEI) and polyethylenimine‐modified nano‐SiO 2 nano‐crosslinker were used as crosslinkers, and the performance of the gel system under high temperatures was systematically evaluated. The studied gel properties include gel formation time, gel strength, thermal stability, infrared spectroscopy, rheological properties, long‐term stability, and microstructure. Acrylamide/2‐acrylamido‐2‐methyl propane sulfonate (named QC‐9 in this paper) is used in the gel system at concentrations as low as 2250 mg/L, and the gel time can be controlled within 3–12 h by adjusting the ratio of the polymers and crosslinkers. The gel exhibits a viscosity of 100–200 mPa·s, withstands temperatures up to 130°C, and has a salt tolerance of 214818.52 mg/L, with a viscosity retention rate of ≥80% after 70 days. At a shear rate of 1 Hz, the elastic modulus ( G ′) after aging for 70 days is 1.07 Pa, and the viscous modulus ( G ″) is 0.25 Pa. The test results indicate that the gel system remains in the high‐viscosity range. Thermogravimetric Analysis tests indicate that the structural destruction temperature of the composite gel is 140°C, the activation energy of the nanocomposite crosslinking polymer weak gel is 5.2 and 16.5 kJ/mol higher for the evaporation of free water and the escape of bound water, respectively, compared to that of the PEI‐crosslinking microgel. Finally, scanning electron microscopy and atomic force microscopy were used to observe the gel's microstru","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 8","pages":"3917-3931"},"PeriodicalIF":0.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.27252","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147896946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flexible and lightweight <scp>PPyNT</scp>/<scp>EPDM</scp> foam for efficient electromagnetic waves absorption in X‐band","authors":"Xinyu Zhu, Wei Yuan, Xiangtong Wen, Jinze Li, Jing Sui, Tao Zhuang, Chong Sun","doi":"10.1002/pen.27243","DOIUrl":"https://doi.org/10.1002/pen.27243","url":null,"abstract":"Abstract Flexible and lightweight polypyrrole nanotubes/ethylene propylene diene monomer (PPyNT/EPDM) rubber foams with excellent electromagnetic waves (EMW) absorption performance in the X‐band were prepared via a simple chemical foaming method. By adjusting the content of PPyNT, the cellular structure, density, and EMW absorption properties of the PPyNT/EPDM foams can be precisely tailored. The synergistic effect of the cellular structure and an optimal PPyNT content (15 phr) endows the PPyNT/EPDM foam with an excellent impedance matching and a high attenuation capacity, in turn resulting in excellent EMW absorption performance in the X‐band, demonstrated by the minimum reflection loss (RL min ) of −27.01 dB at a thickness of 2.3 mm and the maximum effective absorption bandwidth (EAB) of 3.4 GHz at a thickness of 2.6 mm. Furthermore, this foam composite exhibits excellent lightweight characteristics with a density of only 0.795 g/cm 3 . Hence, this research presents a promising approach for the commercial development of flexible, lightweight, cost‐effective, and highly efficient EMW absorption materials. Highlights Lightweight PPyNT/EPDM foam for X‐band EMW absorption. Tailored porous structure and absorption performance by PPyNT content. Foam with 15 phr PPyNT achieves RL min of −27.01 dB and EAB of 3.4 GHz. Synergy of impedance matching, conduction loss, and multiple reflection.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 7","pages":"3704-3714"},"PeriodicalIF":0.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147910421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly improved mechanical and thermal properties of bismaleimide via a novel thermoplastic isoindolinone polyether sulfone","authors":"Meixin Wang, Lixin Song, Zhipeng Wang, J.L. Liu, X.M. Li","doi":"10.1002/pen.27221","DOIUrl":"https://doi.org/10.1002/pen.27221","url":null,"abstract":"Abstract To improve the mechanical and thermal properties of thermosetting bismaleimide resins, a novel thermoplastic isoindolinone‐based polyether sulfone (PES‐In) resin was synthesized as a toughening agent for the N , N ′‐(4,4′‐methylenediphenyl)bismaleimide/2,2′‐diallylbisphenol A (BDM/DABPA) system. The incorporation of this toughening agent not only enhanced the material's overall toughness but also significantly improved its thermal performance. The effects of PES‐In's viscosity and dosage on toughening efficiency were systematically studied, leading to the identification of optimal conditions. Specifically, 7.5 phr PES‐In with a viscosity of 0.4 dL/g resulted in a remarkable increase in the impact strength of the PES‐In/BDM/DABPA system to 37.20 kJ/m 2 , representing a 497% improvement over the base BDM (6.23 kJ/m 2 ). Thermal properties, as assessed by dynamic thermomechanical analysis and thermogravimetric analysis, also showed significant enhancements, with T d5% and T g reaching 425 and 267°C, respectively, and the storage modulus rising from 2.0 to 2.5 GPa. Scanning electron microscope analysis revealed a typical “sea‐island” toughening structure with multiple crack deflections on the impact fracture surface. The introduction of PES‐In thus broadens the application potential of bismaleimide in higher‐temperature‐resistant structural materials. Highlights Novel isoindolinone‐based polyether sulfone (PES‐In) was synthesized. Toughness of bismaleimide networks by PES‐In was significantly improved. Thermal performance of the PES‐In/ BDMN /DABPA system was improved. Relative toughening mechanism was clearly elucidated.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 7","pages":"3394-3406"},"PeriodicalIF":0.0,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.27221","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}