Journal of Polymer Science最新文献_第9页

A High-Efficiency Flame-Retardant Coating for Flexible Polyurethane Foam via Layer-by-Layer Self-Assembly of Tannic Acid and Metal Ions 单宁酸与金属离子逐层自组装的柔性聚氨酯泡沫高效阻燃涂料

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-06-15 Epub Date: 2026-04-24 DOI: 10.1002/pola.70149

Yongjiang Li, Ailing Zhang, Yanhui Wang, Donglei Fan, Yichao Lin, Jie Liu, Tao Tang

{"title":"A High-Efficiency Flame-Retardant Coating for Flexible Polyurethane Foam via Layer-by-Layer Self-Assembly of Tannic Acid and Metal Ions","authors":"Yongjiang Li, Ailing Zhang, Yanhui Wang, Donglei Fan, Yichao Lin, Jie Liu, Tao Tang","doi":"10.1002/pola.70149","DOIUrl":"https://doi.org/10.1002/pola.70149","url":null,"abstract":"<div>\u0000 \u0000 <p>Flexible polyurethane foam (FPUF) is widely used in daily applications and thermal insulation materials owing to its excellent stability and comfort. However, its high flammability and the substantial production of molten droplets during combustion limit its use. Layer-by-layer self-assembly (LBL) has emerged as an efficient strategy for imparting flame retardancy to FPUF, particularly through coatings based on metal ions-polyphenol coordination networks; it can efficiently suppress heat and smoke release during combustion. Here, we have developed an alternating layer composed of polyethyleneimine (PEI)/tannic acid (TA) + Fe(NO<sub>3</sub>)<sub>3</sub>/polyacrylic acid (PAA) + montmorillonite (MMT). This coating not only markedly reduces the peak heat release rate (PHRR) at low add-on levels but also efficiently suppresses smoke emission from FPUF. Cone calorimetry results show that five layers foam a modest weight gain of only 6.6 wt% achieves reductions of 43% in PHRR, 59% in peak smoke production rate (PSPR), and 48% in total smoke production (TSP) compared to pristine FPUF. Moreover, the coating exhibits excellent water resistance: after 15 days of water immersion, the PHRR and TSP of the coated foam remain reduced by 35% and 27%, respectively, relative to uncoated FPUF. Further analysis of the flame-retardant mechanism, offering valuable insights for the rational design of high-performance flame-retardant coatings for FPUF.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 12","pages":"2475-2487"},"PeriodicalIF":3.9,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148268855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Reinforcement and Toughening of Urea–Formaldehyde Resin via a Hydrogen-Bond Network Induced by Quaternary Ammonium Salts 季铵盐诱导的氢键网络对脲醛树脂的增强型增韧

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-06-15 Epub Date: 2026-05-01 DOI: 10.1002/pola.70162

Pinzheng Hu, Lin Ye, Xiaowen Zhao, Zun Yuan

{"title":"Synergistic Reinforcement and Toughening of Urea–Formaldehyde Resin via a Hydrogen-Bond Network Induced by Quaternary Ammonium Salts","authors":"Pinzheng Hu, Lin Ye, Xiaowen Zhao, Zun Yuan","doi":"10.1002/pola.70162","DOIUrl":"https://doi.org/10.1002/pola.70162","url":null,"abstract":"<div>\u0000 \u0000 <p>Urea–formaldehyde (UF) resin suffers from high brittleness, and conventional toughening methods, such as blending with flexible polymers, often lead to a reduction in stiffness. In this study, a novel strategy was developed to simultaneously enhance both the toughness and strength of UF resin by introducing quaternary ammonium salts (QASs). The incorporation of QASs, particularly chitosan-based quaternary ammonium salt (HACC), enabled the establishment of a hydrogen-bond network in UF resin, wherein chloride ions (Cl<sup>−</sup>) served as strong hydrogen bond acceptors. These ions competed with the native acceptors present in UF, leading to the partial replacement of inter-resin hydrogen bonds with stronger UF-QASs interactions. The formation of such a hydrogen-bond network reduced the chemical crosslinking density of the resin while serving as sacrificial bonds that dissipated energy under stress, thereby enhancing toughness and resulting in obvious plastic deformation upon impact. Concurrently, the cationic nature of QASs facilitated electrostatic adsorption onto negatively charged lignocellulose surfaces, increasing the <i>ζ</i>-potential of lignocellulose, suppressing fiber pull-out, and strengthening the fiber-matrix interface. For UF-HACC, remarkable improvements in tensile strength (58.41%) and impact toughness (21.84%) can be achieved, along with significantly enhanced water resistance. This work presents a facile and effective strategy for developing high-performance UF resins.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 12","pages":"2552-2563"},"PeriodicalIF":3.9,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148269092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Preparation of Recyclable and Degradable Phenolic Resins and Their Basalt Fiber Composites Based on Dynamic Imine Bonds 基于动态亚胺键的可回收可降解酚醛树脂及其玄武岩纤维复合材料的制备

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-06-15 Epub Date: 2026-05-04 DOI: 10.1002/pola.70169

Qian Luo, Xin Lai, Xiaolong Yu, Yi Qin, Yonglin Lei

{"title":"Preparation of Recyclable and Degradable Phenolic Resins and Their Basalt Fiber Composites Based on Dynamic Imine Bonds","authors":"Qian Luo, Xin Lai, Xiaolong Yu, Yi Qin, Yonglin Lei","doi":"10.1002/pola.70169","DOIUrl":"https://doi.org/10.1002/pola.70169","url":null,"abstract":"<div>\u0000 \u0000 <p>Conventional thermosetting phenolic resins are difficult to recycle after curing. To overcome this limitation, straight-chain phenolic resins containing aldehyde groups (MPR) are synthesized by introducing aldehyde functional groups on the benzene rings of straight-chain phenolic resins. Subsequently, a dynamic imine-bonded (–C=N–) crosslinked network is constructed through the Schiff base condensation reaction of these aldehyde groups with the 1,6-hexanediamine (HMDA) to obtain recyclable thermosetting phenolic resins. Due to the unique structure of phenolic resins, there is an inherent limitation on the number of aldehyde groups that can be introduced, resulting in a decrease in mechanical and thermal properties after curing. Therefore, in this system, hexamethylenetetramine (HMTA) is introduced as a co-curing agent to enhance the properties while maintaining recyclability. Four imine-phenolic crosslinked polymers with different HMDA/HMTA molar ratios are designed to systematically investigate their comprehensive performance and recyclability. The results show that all polymers exhibit high glass transition temperatures (110°C–150°C), toughness (elongation at break 3.5%–4.0%), high tensile strengths (26.3–32.8 MPa), and recyclability. Furthermore, the basalt fiber composites prepared with this imine phenolic resin can be completely degraded under weak acidic conditions, enabling non-destructive recycling of basalt fibers.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 12","pages":"2610-2623"},"PeriodicalIF":3.9,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148269222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Using Polymerization-Induced Self Assembly (PISA) Nanoparticles as Additives for the Fabrication of Functionalized PVDF Membranes 用聚合诱导自组装（PISA）纳米颗粒作为添加剂制备功能化PVDF膜

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-06-15 Epub Date: 2026-05-02 DOI: 10.1002/pola.70156

Chen Zhao, Zihao Zhang, Jinhua Li, Chunbo He, Yongqi Yang, Xin Luo

{"title":"Using Polymerization-Induced Self Assembly (PISA) Nanoparticles as Additives for the Fabrication of Functionalized PVDF Membranes","authors":"Chen Zhao, Zihao Zhang, Jinhua Li, Chunbo He, Yongqi Yang, Xin Luo","doi":"10.1002/pola.70156","DOIUrl":"https://doi.org/10.1002/pola.70156","url":null,"abstract":"<div>\u0000 \u0000 <p>Polymerization-induced self-assembly (PISA) facilitates the rapid and- scalable preparation of well-defined block copolymer nanoparticles. However, their utilization as functional additives in solid materials—particularly for separation membranes—remains a significant challenge. To address this, we incorporate PISA-synthesized poly(dimethylaminoethyl methacrylate)-<i>b</i>-poly(tert-butylstyrene) (PDMAEMA-<i>b</i>-PtBS) nanoparticles into poly(vinylidene fluoride) (PVDF) membranes via non-solvent-induced phase separation (NIPS). The resulting core–shell nanoparticles form stable colloidal dispersions in polar solvents such as N,N-dimethylformamide (DMF), owing to the soluble PDMAEMA corona, while the insoluble PtBS core provides structural integrity. During membrane formation, these nanoparticles serve a dual function: as effective pore-forming agents that increase membrane porosity to above 90%, and as pH-responsive modifiers due to the tertiary amine groups in the PDMAEMA block. This unique design enables reversible tuning of pure water permeability by up to a factor of 2 through simple acid–base treatment cycles. Our work thereby demonstrates a viable strategy for fabricating smart polymeric membranes using structurally intact, stimuli-responsive PISA nanoparticles, bridging the gap between nanoparticle synthesis and functional material design.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 12","pages":"2564-2573"},"PeriodicalIF":3.9,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148268773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Relationships Between Sequential Structure and Physicochemistry Performance for CO2-Derived Semi-Aromatic Poly(Carbonate-Ester) Terpolymers co2衍生半芳族聚（碳酸酯）三聚体序贯结构与理化性能的关系

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-06-15 Epub Date: 2026-05-05 DOI: 10.1002/pola.70153

Xuan Zhao, Guoshan He, Wenbin Zhong, Haiyun You, Wanjuan Wang, Zilin Luo, Shuangshuang Yue, Min Xiao, Shuanjin Wang, Dongmei Han, Sheng Huang, Yuezhong Meng

{"title":"Relationships Between Sequential Structure and Physicochemistry Performance for CO2-Derived Semi-Aromatic Poly(Carbonate-Ester) Terpolymers","authors":"Xuan Zhao, Guoshan He, Wenbin Zhong, Haiyun You, Wanjuan Wang, Zilin Luo, Shuangshuang Yue, Min Xiao, Shuanjin Wang, Dongmei Han, Sheng Huang, Yuezhong Meng","doi":"10.1002/pola.70153","DOIUrl":"https://doi.org/10.1002/pola.70153","url":null,"abstract":"<div>\u0000 \u0000 <p>Poly(propylene carbonate) (PPC), the alternating copolymers of carbon dioxide (CO<sub>2</sub>) and propylene oxide (PO), is a commercialized biodegradable plastic with excellent transparency, low cost, and full biodegradability. Moreover, its molecular chains are flexible and highly dense, giving it outstanding gas barrier properties and promising applications in areas such as food and pharmaceutical packaging. In order to further enhance the application potential of PPC in terms of thermal stability and gas barrier performance, terpolymerization of CO<sub>2</sub>/PO/phthalic anhydride (PA) is conducted via both one-pot/two-step and one-pot/one-step methods using a metal-free catalytic system. Polycarbonate-polyester terpolymers (PPC-P) with different sequence structures but similar molecular weight and approximately 43% polyester content were synthesized by adjusting reaction conditions. The thermal degradation behavior of PPC-P was investigated using TG/IR and Py-GC/MS techniques. Furthermore, a comprehensive study was conducted to examine the influence of sequence structures on the thermal stability, mechanical properties, oxygen/water barrier performance, and alcoholysis behavior of PPC-P materials. The results demonstrate that the sequence structure of polymers influences its thermal stability, gas barrier, and alcoholysis behavior. This work not only elucidates the relationship between polymer sequential structure and performance but also provides the foundation for the development of biodegradable materials in food applications.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 12","pages":"2624-2637"},"PeriodicalIF":3.9,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148268999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Review on the Use of Vitrimer Materials for the Reutilization and Recycling of Batteries 玻璃体材料在电池再生利用中的应用综述

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-06-15 Epub Date: 2026-05-07 DOI: 10.1002/pol.20251215

David Santiago, Pere Verdugo

{"title":"Review on the Use of Vitrimer Materials for the Reutilization and Recycling of Batteries","authors":"David Santiago, Pere Verdugo","doi":"10.1002/pol.20251215","DOIUrl":"https://doi.org/10.1002/pol.20251215","url":null,"abstract":"<p>The growing demand for lithium-ion batteries (LIBs) raises critical sustainability challenges related to resource scarcity, environmental impact, and end-of-life management. Conventional recycling methods, such as pyrometallurgy and hydrometallurgy, are energy-intensive and generate hazardous waste, while emerging strategies like direct recycling and second-life applications remain constrained by irreversible thermoset components. Vitrimers offer a promising solution by combining the mechanical robustness of thermosets with dynamic properties such as reprocessability, self-healing, and recyclability. This review explores the integration of vitrimer materials into LIB architectures, focusing on three key components: solid polymer electrolytes (SPEs), adhesives, and binders. Vitrimer-based SPEs enable safer, dendrite-suppressing electrolytes with enhanced mechanical resilience and potential for closed-loop recycling. As adhesives, vitrimers facilitate reversible bonding, improving battery disassembly and material recovery. In electrode binders, dynamic networks mitigate mechanical degradation and accommodate volume changes in high-capacity anodes, enhancing cycle life and stability. Despite these advances, challenges remain in achieving high ionic conductivity at room temperature, ensuring electrochemical compatibility, and scaling production. Vitrimers represent a versatile platform for next-generation batteries, aligning with circular economy principles and paving the way toward sustainable, repairable, and high-performance energy storage systems.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 12","pages":"2638-2660"},"PeriodicalIF":3.9,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20251215","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148268802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Maleic Anhydride Grafting Modification on the Dielectric Properties of PP/SEBS Based High Voltage Cable Materials 马来酸酐接枝改性对PP/SEBS基高压电缆材料介电性能的影响

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-06-15 Epub Date: 2026-04-24 DOI: 10.1002/pola.70128

Xuejing Li, Hantao Wei, Meng Wang, Zhuang Xu, Chen Shen, Shengtao Li, Yanhui Wei, Guochang Li

{"title":"Effect of Maleic Anhydride Grafting Modification on the Dielectric Properties of PP/SEBS Based High Voltage Cable Materials","authors":"Xuejing Li, Hantao Wei, Meng Wang, Zhuang Xu, Chen Shen, Shengtao Li, Yanhui Wei, Guochang Li","doi":"10.1002/pola.70128","DOIUrl":"https://doi.org/10.1002/pola.70128","url":null,"abstract":"<div>\u0000 \u0000 <p>Polypropylene (PP) is currently the most promising polymer material used in cable insulation, because of its excellent electrical insulation properties and heat resistance. Now, the dynamic changes in composition and properties of multi-component composites with PP are being studied. In this paper, maleic anhydride grafted polypropylene (MAH-g-PP) is used as a compatibilizer to modify the comprehensive properties of PP/SEBS, particularly the mechanical and electrical properties. The method of mutual verification between experiments and simulations is adopted. The elongation at break of the composites decreases slightly. The low-frequency permittivity increases gradually, and the high frequency is basically maintained at 2.32. The breakdown strength increases first and then decreases, and the composite with 3.5 wt% MAH-g-PP content is the highest, 148.14 kV/mm, an increase of 46.12% compared with PP/SEBS. The MS results show that the <i>E</i>\u0000 <sub>int</sub> absolute value of SEBS to MAH-g-PP is 6.29 times of SEBS and PP, being −313.08 kcal/mol. In addition, the band gap of MAH-g-PP is the narrowest, at 4.06 eV, but there are two distinct localized energy levels, which hindered the transport of charge carriers. This work has significant promoting significance for the application of new environmentally friendly polypropylene cables.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 12","pages":"2465-2474"},"PeriodicalIF":3.9,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148268853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Nitroxide Radical Conjugated Polymers: Synthesis and Application as Solid Additives for High-Efficiency Organic and Perovskite Solar Cells 氮氧自由基共轭聚合物：作为高效有机和钙钛矿太阳能电池固体添加剂的合成与应用

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-06-15 Epub Date: 2026-04-29 DOI: 10.1002/pola.70154

Tongda Xie, Xuanhui Zhang, Zhen Cen, Daoxian Li, Zhenyu Zhu, Xudong Lv, Yangjun Xia

{"title":"Nitroxide Radical Conjugated Polymers: Synthesis and Application as Solid Additives for High-Efficiency Organic and Perovskite Solar Cells","authors":"Tongda Xie, Xuanhui Zhang, Zhen Cen, Daoxian Li, Zhenyu Zhu, Xudong Lv, Yangjun Xia","doi":"10.1002/pola.70154","DOIUrl":"https://doi.org/10.1002/pola.70154","url":null,"abstract":"<div>\u0000 \u0000 <p>A series of nitroxide radical conjugated polymers (PBDT-NOx), specifically named PBDT-NO100, PBDT-NO60, PBDT-NO40, PBDT-NO20, and PBDT-NO5, are synthesized via palladium-catalyzed Stille coupling polymerization. These polymers are accordingly constructed from 4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene-2,6-diyl) (BDT), 1,3-bis(5-bromothiophen-2-yl)-5,7-dioctyl-4H,8H-benzo[1,2-c:4,5-c’]dithio-phene-4,8-dione (BDD), and 1,4-bis(4-oxy-2,2,6,6-tetramethylpiperidine-1-oxyl)phthalate (BTMP), with their molar feed ratios systematically varied from 50:0:50 to 50:45:5. The chemical structures, molecular weights, and optoelectronic properties are characterized. Upon the addition of the PBDT-NOx as additives, the power conversion efficiencies (PCEs) of the PM6:Y6-based non-fullerene-based organic solar cells (NFAs-OSCs) are increased from 15.62% to 16.71%–17.04%, contributed by the improvement of the electron and hole mobility, reduced charge carriers' recombination, and mitigation of the non-radiative energy loss, thus leading to PCE improvements of the NFAs-OSCs. Furthermore, the utilization of the representative PBDT-NO60 as a solid additive for the hole transporting layers (HTL) of Spiro-OMeTAD with Li-TFSI for the Cs<sub>0.05</sub>Rb<sub>0.05</sub>(FA<sub>0.83</sub>MA<sub>0.17</sub>)<sub>0.90</sub>Pb(I<sub>0.95</sub>Br<sub>0.05</sub>)<sub>3</sub> based perovskite of solar cells (PSCs), which result in the improvement of the hole mobility of HTL, reduced carrier recombination, and enhanced carrier extraction, therefore leading to PCE improvements from 19.31% to 21.17% the PSCs, are supported an discussed.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 12","pages":"2530-2539"},"PeriodicalIF":3.9,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148269034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Energetic Copolymers From LLM-105 and Aliphatic Isocyanates LLM-105与脂肪族异氰酸酯的高能共聚物

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-06-15 Epub Date: 2026-05-02 DOI: 10.1002/pola.70160

Michael E. Steelman, James P. Lewicki

{"title":"Energetic Copolymers From LLM-105 and Aliphatic Isocyanates","authors":"Michael E. Steelman, James P. Lewicki","doi":"10.1002/pola.70160","DOIUrl":"https://doi.org/10.1002/pola.70160","url":null,"abstract":"<div>\u0000 \u0000 <p>Energetic polymers typically feature fuel-rich backbones with pendant oxidizing explosophores, which are used to modify pressure and temperature characteristics in energetic formulations. However, these pendant explosophores generally increase sensitivity and decrease the thermal stability of the polymer in the condensed phase. Direct polymerization of insensitive high explosives (IHEs) bearing polymerizable functionalities, such as amines, provides a synthetic platform for deriving tunable energetic materials. This work demonstrates the first direct polymerization of the IHE 2,6-diamino-3,5-dinitropyrazine-1-oxide (LLM-105) with aliphatic isocyanate comonomers to yield an energetic copolyurea (PUa1) and an energetic copolyurea network (PUa2). <sup>1</sup>H and <sup>13</sup>C nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FTIR) confirm copolyurea synthesis. PUa1 exhibited branching reactions commonly found in polyurea syntheses, and these side reactions were suppressed in PUa2 through use of a polyfunctional isocyanate. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) demonstrate the energetic IHE based polyurea preserves the energetic decomposition of the parent monomer LLM-105 in PUa1 (1203 J g<sup>−1</sup>) and PUa2 (687 J g<sup>−1</sup>), albeit with reduced thermal stability with peak decomposition temperatures of 235°C and 233°C, respectively. This work presents a new approach for generating energetic polymers from IHE cores with tunable energetic, thermal, and structural characteristics.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 12","pages":"2574-2581"},"PeriodicalIF":3.9,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148268775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Organic Microspheres With Directionally Controlled Pore Structures Facilitating Lightweight Matte Coatings 具有定向控制孔结构的有机微球促进轻质哑光涂层

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-06-15 Epub Date: 2026-05-07 DOI: 10.1002/pola.70165

Wenjie Li, Yubin Wang, Renwei Cao, Gaorui Dong, Shihan Zhang, Yu Gao, Hailin Cong, Chang Liu, Bing Yu

{"title":"Organic Microspheres With Directionally Controlled Pore Structures Facilitating Lightweight Matte Coatings","authors":"Wenjie Li, Yubin Wang, Renwei Cao, Gaorui Dong, Shihan Zhang, Yu Gao, Hailin Cong, Chang Liu, Bing Yu","doi":"10.1002/pola.70165","DOIUrl":"https://doi.org/10.1002/pola.70165","url":null,"abstract":"<div>\u0000 \u0000 <p>Aerospace matt coatings impose stringent requirements on both matting performance and weight reduction. Traditional inorganic matting agents suffer from high density and poor compatibility, whereas organic matting agents are often inadequate for lightweight applications. This study synthesized porous microspheres of polystyrene-poly(epoxypropyl methylacrylate) copolymer with polyethylene glycol dimethacrylate through expanded emulsion polymerization by regulating the ratio of crosslinking agent to porogen. The resulting microspheres exhibit not only low density (0.924 g/cm<sup>3</sup>) but also a well-defined pore structure, balanced mechanical strength, moderate particle size, and uniform dispersion characteristics. The pore structure delivers the advantage of low density, and the properly controlled size and uniform dispersibility bring excellent matting performance. Subsequently, these microspheres were combined with fluorocarbon resin to produce a composite coating exhibiting stable matting properties, hydrophobicity, and excellent environmental resistance. This approach offers an innovative solution for enhancing lightweight matting coating technology within the aerospace sector.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 12","pages":"2671-2686"},"PeriodicalIF":3.9,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148268795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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