Polymer Engineering and Science最新文献_第5页

PA6 Microspheres Synthesized by In Situ Anionic Phase Transfer Polymerization for Electromagnetic Shielding 原位阴离子相转移聚合法制备电磁屏蔽用PA6微球

4区工程技术

Polymer Engineering and Science Pub Date : 2025-08-14 DOI: 10.1002/pen.70084

Bozhen Wu, Xuejiao Song, Peng Wu, Yongkang Meng, Yanghua Song, Zhongpu Shi, Yan Liu

{"title":"<scp>PA6</scp> Microspheres Synthesized by In Situ Anionic Phase Transfer Polymerization for Electromagnetic Shielding","authors":"Bozhen Wu, Xuejiao Song, Peng Wu, Yongkang Meng, Yanghua Song, Zhongpu Shi, Yan Liu","doi":"10.1002/pen.70084","DOIUrl":"https://doi.org/10.1002/pen.70084","url":null,"abstract":"ABSTRACT Polyamide 6 (PA6) microspheres are typically prepared via phase transfer during in situ anionic polymerization of caprolactam (CL) induced by single hydrophilic or hydrophobic polymers. However, systematic studies on the influence of amphiphilic polymers on PA6 microsphere morphology are lacking. In this study, amphiphilic PS‐b‐PEG‐b‐PS block copolymers were synthesized by electron transfer activated regenerated atomic transfer radical polymerization (AGET ATRP). Polyethylene glycol (PEG), as a typical hydrophilic polymer, exhibits significant influence on interfacial properties and phase separation behavior through its molecular weight variations. In pure PEG systems, PA6 microspheres transformed from continuous phase (PEG2K) to isolated spherical structures (PEG6K). After introducing polystyrene (PS) segments onto PEG chains, PA6/PS‐b‐PEG‐b‐PS blends formed with significantly increased microsphere size due to reduced interfacial tension. Through thermodynamic and kinetic analysis, we revealed the microstructural regulatory mechanism of interfacial tension and compatibility competition. PA6 microspheres were further developed into PA6@Ni magnetic microspheres and combined with conductive silver nanowires (AgNWs) to construct magnetic–electric gradient AgNWs/PA6@Ni/CNF‐H (CPNA‐H) composite films. The CPNA‐H composite films achieved a total shielding effectiveness of 62.85 dB in the X‐band (8.2–12.4 GHz), 13.9% higher than non‐magnetic AgNWs/CNF films, providing theoretical guidance for polymer blends microstructural design and lightweight electromagnetic shielding materials development.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 11","pages":"5836-5850"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330487","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}

引用次数: 1

Effect of HPC Incorporation on Structures and Properties of PVA Electrospun Fiber Membrane HPC掺入对PVA静电纺丝纤维膜结构和性能的影响

4区工程技术

Polymer Engineering and Science Pub Date : 2025-08-12 DOI: 10.1002/pen.70096

Xihao Yang, Xiuling Lin, Shuo Wang, Yong Chen, Xiangyu Dai

{"title":"Effect of <scp>HPC</scp> Incorporation on Structures and Properties of <scp>PVA</scp> Electrospun Fiber Membrane","authors":"Xihao Yang, Xiuling Lin, Shuo Wang, Yong Chen, Xiangyu Dai","doi":"10.1002/pen.70096","DOIUrl":"https://doi.org/10.1002/pen.70096","url":null,"abstract":"ABSTRACT The selection of appropriate materials for adjusting the properties of polyvinyl alcohol (PVA) electrospun fiber membrane is an essential objective. In this study, a novel PVA/hydroxypropyl cellulose (PVA/HPC) composite fiber membrane was fabricated through electrospinning technology. The water‐soluble HPC served as an additive to modify the structures and properties of the PVA electrospun fiber membrane. The electrospinning process was optimized with an 8% PVA solution containing different contents of HPC additive, achieving continuous fiber formation at 20 kV applied voltage with a 16 cm collector distance, which significantly improved the spinnability of PVA solutions. The addition of HPC can improve the mechanical properties of the PVA fiber membrane. The PVA/HPC fiber membrane displayed an ideal capacity for sustained drug release and exhibited significant antibacterial activity. The P8H1.5 (PVA/HPC was 8%/1.5%) fibers, which were uniform and defect‐free, demonstrated the best release effect and antibacterial activity. These results suggested that HPC is an ideal material for improving the properties of the PVA electrospun fiber membrane and that the PVA/HPC fiber membrane could be a potential antibacterial and anti‐inflammatory material for medical applications.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 10","pages":"5627-5635"},"PeriodicalIF":0.0,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.70096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333399","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}

引用次数: 0

Polyvinyl Alcohol/Sodium Alginate/Collagen ( PVA / SA /Col) Hydrogel Beads: Preparation of a Novel Double‐Layer Network Interpenetrating Hydrogel Material and Evaluation of Tannic Acid Adsorption Properties 聚乙烯醇/海藻酸钠/胶原蛋白（PVA / SA /Col）水凝胶珠：新型双层网络互穿水凝胶材料的制备及单宁酸吸附性能评价

4区工程技术

Polymer Engineering and Science Pub Date : 2025-08-12 DOI: 10.1002/pen.70086

Ge Yan, Qifeng Chen, Lixin Zhang, Yunjia Wang

引用次数: 0

Modified LDHs for Long‐Lasting Fire Safety in Polypropylene: Simultaneous Flame Retardancy and Smoke Toxicity Reduction 用于聚丙烯持久防火安全的改性LDHs：同时阻燃性和烟毒性降低

4区工程技术

Polymer Engineering and Science Pub Date : 2025-08-11 DOI: 10.1002/pen.70101

Jiahao Duan, Houwang Wang, Linhao Xie, Xiaodong Qian, Mei Wan, Mei Wan

{"title":"Modified <scp>LDHs</scp> for Long‐Lasting Fire Safety in Polypropylene: Simultaneous Flame Retardancy and Smoke Toxicity Reduction","authors":"Jiahao Duan, Houwang Wang, Linhao Xie, Xiaodong Qian, Mei Wan, Mei Wan","doi":"10.1002/pen.70101","DOIUrl":"https://doi.org/10.1002/pen.70101","url":null,"abstract":"ABSTRACT A bio‐based phytate (PA)‐intercalated Mg‐Al layered double hydroxide (LDH‐PA) was successfully synthesized via a calcination‐reconstruction method and incorporated into polypropylene (PP) as an efficient flame retardant. LDH‐C precursors were first prepared by co‐precipitation combined with hydrothermal treatment, followed by calcination at 500°C to obtain layered double oxides (LDO). Subsequent anion exchange with phytate under a nitrogen atmosphere reconstructed the LDH structure, introducing PA anions into the interlayer. The results from multiple characterization techniques confirmed the successful incorporation of phytate anions. The PP/LDH‐PA composites exhibited markedly enhanced thermal stability. At a loading of 15 wt% LDH‐PA, the maximum thermal decomposition rate decreased by 19.0%, and the residual char yield increased to 12.72 wt%. The composite achieved a limiting oxygen index (LOI) of 26.8% and attained a UL‐94 V‐1 rating. Cone calorimeter tests showed that, compared with pure PP, the PP/LDH‐PA 15 composite reduced the peak heat release rate (PHRR), total heat release (THR), peak smoke production rate (PSPR), total smoke release (TSR), peak CO release rate, and peak CO 2 release rate by 29.6%, 19.2%, 41.2%, 13.4%, 35.3%, and 32.4%, respectively. These enhancements can be mainly ascribed to three factors: (i) the compact char layer catalyzed by LDH‐PA offers a physical barrier effect; (ii) during the LDH decomposition, the carbon dioxide and crystalline water released generate a dilution effect; (iii) PA brings about a radical‐quenching mechanism.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 11","pages":"5935-5949"},"PeriodicalIF":0.0,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331574","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}

引用次数: 0

Long‐Term Form‐Stable Phase Change Materials Based on Ionomers and Fatty Acid Eutectics for Thermal Management 基于热管理用离聚体和脂肪酸共晶的长期形式稳定相变材料

4区工程技术

Polymer Engineering and Science Pub Date : 2025-08-09 DOI: 10.1002/pen.70085

Mingshuo Liu, Wenqiang Yan, Zhenwei Shi, Qian Ma, Shilong Wang, Yunhao Bao, Pinghou Sheng, Yun Ding

{"title":"Long‐Term Form‐Stable Phase Change Materials Based on Ionomers and Fatty Acid Eutectics for Thermal Management","authors":"Mingshuo Liu, Wenqiang Yan, Zhenwei Shi, Qian Ma, Shilong Wang, Yunhao Bao, Pinghou Sheng, Yun Ding","doi":"10.1002/pen.70085","DOIUrl":"https://doi.org/10.1002/pen.70085","url":null,"abstract":"ABSTRACT As a promising strategy, phase change materials (PCMs) are essential for optimizing energy utilization. However, conventional PCMs still face persistent challenges such as leakage and brittleness. This study offers an effective strategy by introducing ionomers with improved flexibility to prepare form‐stable phase change materials (FSPCMs). We formulated a binary eutectic mixture CP, composed of capric acid (CA) and palmitic acid (PA), to develop a PCM suitable for phase transition at room temperature. Zinc‐neutralized sulfonated EPDM (Zn‐SEPDM) ionomers were synthesized as support material. The outstanding compatibility between fatty acids and Zn‐SEPDM ionomers contributes to enhancing the leak‐proof performance of FSPCM. The prepared Zn‐SEPDM/CP‐40 showed remarkable flexibility, achieving a maximum elongation at break of 617% and a tensile strength of 3.5 MPa. The introduction of diatomite (DA) not only enhanced the shape stability but also further prevented the leakage of PCMs. In particular, Zn‐SEPDM/CP@DA‐40 exhibited good flexibility and a CP residual mass rate of 99.45%. It also had remarkable regulation ability in the temperature range of 16.9°C–25.9°C. Furthermore, the incorporation of ionomers provides a green strategy for processing energy storage sheets, with processing temperatures below 100°C.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 10","pages":"5523-5534"},"PeriodicalIF":0.0,"publicationDate":"2025-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330641","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}

引用次数: 1

Multifunctional Micro/Nano‐Scale Nonwoven With Antibacterial Properties for Efficient Capture of PM_0.3 高效捕获PM0.3的多功能微/纳米非织造布抗菌性能

4区工程技术

Polymer Engineering and Science Pub Date : 2025-08-09 DOI: 10.1002/pen.70090

Teng Ma, Yaxin An, Zezhang T. Wen, Jiaxin Zhang, Dandan Lian, Jianjun Lu, Hua Wang

{"title":"Multifunctional Micro/Nano‐Scale Nonwoven With Antibacterial Properties for Efficient Capture of <scp>PM<sub>0.3</sub></scp>","authors":"Teng Ma, Yaxin An, Zezhang T. Wen, Jiaxin Zhang, Dandan Lian, Jianjun Lu, Hua Wang","doi":"10.1002/pen.70090","DOIUrl":"https://doi.org/10.1002/pen.70090","url":null,"abstract":"ABSTRACT This study innovatively used polyethylene glycol (PEG) as a multifunctional modifier to prepare nano‐zinc oxide and polyhexamethylene guanidine hydrochloride (Nano ZnO/PHMG) hybrid melt‐blown antibacterial composite materials by twin‐screw blending. PEG overcame traditional additives' single‐function limitation, achieving dual structural regulation and antibacterial enhancement. PEG rheological properties were modulated to produce multistage fiber structures, improving filtration performance, while simultaneously optimizing antibacterial component distribution through its water solubility. Systematic experiments revealed how PEG‐regulated local viscosity affected multistage fiber formation and pore distribution, directly impacting filtration performance. At 12% PEG loading (ABA‐PP‐12PEG), optimal comprehensive performance was demonstrated: 77.45% filtration efficiency (153.5% increased) with 34.0% lower resistance (11.28 Pa). Post‐treatment further enhanced performance to 80.06% efficiency and 10.68 Pa resistance. Antibacterial rates surged 6.7‐fold from 1.78 to 12.01.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 10","pages":"5544-5560"},"PeriodicalIF":0.0,"publicationDate":"2025-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333045","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}

引用次数: 0

Terminal Modification of Poly(Ethylene Furanoate) With Polycyclic Aromatic Hydrocarbons (PAHs): Leveraging π–π Interactions and Plasticization for Properties Enhancement 多环芳烃（PAHs）对聚呋喃酸乙烯的末端改性：利用π -π相互作用和增塑增强性能

4区工程技术

Polymer Engineering and Science Pub Date : 2025-07-29 DOI: 10.1002/pen.70059

Jinpeng Liang, Zhigang Shen, Haijun Xiao, Ya-Nan Qin, Sun Nan, Danli Nie, Yuxiang Xie, Liping Yang, Baoqing Shentu, Xinming Pu

{"title":"Terminal Modification of Poly(Ethylene Furanoate) With Polycyclic Aromatic Hydrocarbons (<scp>PAHs</scp>): Leveraging π–π Interactions and Plasticization for Properties Enhancement","authors":"Jinpeng Liang, Zhigang Shen, Haijun Xiao, Ya-Nan Qin, Sun Nan, Danli Nie, Yuxiang Xie, Liping Yang, Baoqing Shentu, Xinming Pu","doi":"10.1002/pen.70059","DOIUrl":"https://doi.org/10.1002/pen.70059","url":null,"abstract":"ABSTRACT Poly(ethylene furanoate) (PEF), a sustainable alternative to poly(ethylene terephthalate) (PET), exhibits superior gas barrier properties but faces challenges in impact toughness and slow crystallization, limiting its industrial adoption. This study introduces a novel terminal modification strategy using polycyclic aromatic hydrocarbons (PAHs) to synergistically enhance PEF's performance through π–π stacking interactions, plasticization, and crystallization optimization. By incorporating PAHs (9‐PBA/1‐NA) as terminal modifiers, modified PEFB x and PEFN x polyesters demonstrate accelerated crystallization (15 vs. 33 min for neat PEF) and increased crystallinity (53% vs. 41%). The PAH‐driven π–π stacking and V‐shaped B(OH) 2 groups in 9‐PBA promote chain folding and ordered packing, significantly improving oxygen barrier performance (40.9% reduction in permeability coefficient) and mechanical properties. Remarkably, PEFB 0.5 achieves a 277% increase in elongation at break and a 229% enhancement in tensile modulus compared to unmodified PEF. Furthermore, the method integrates reactive extrusion with injection molding, offering a scalable and industrially viable route for producing high‐performance PEF with balanced processability, barrier properties, and mechanical strength.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 10","pages":"5318-5331"},"PeriodicalIF":0.0,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901169","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}

引用次数: 0

A Novel Approach to Starch‐Based Bioplastics Development by Fatty Acid Epoxides Coupling 脂肪酸环氧化合物偶联制备淀粉基生物塑料的新途径

4区工程技术

Polymer Engineering and Science Pub Date : 2025-07-27 DOI: 10.1002/pen.70063

Huixian Guo, Qiuming Peng, Xueying Liu, Jin‐Yuan Hu, Xiao‐Shuang Cai, Wenting Yin, Hua‐Min Liu

{"title":"A Novel Approach to Starch‐Based Bioplastics Development by Fatty Acid Epoxides Coupling","authors":"Huixian Guo, Qiuming Peng, Xueying Liu, Jin‐Yuan Hu, Xiao‐Shuang Cai, Wenting Yin, Hua‐Min Liu","doi":"10.1002/pen.70063","DOIUrl":"https://doi.org/10.1002/pen.70063","url":null,"abstract":"ABSTRACT Utilizing unsaturated fatty acids from sunflower oil refining sludge is strategically important for improving oil utilization efficiency and promoting environmental outcomes. Unsaturated fatty acid methyl esters (U‐FAMEs) were extracted and applied as a precursor for epoxidation in this work. A maximum content of the epoxide groups (4.0 mol/L) in the epoxidized sunflower oil (ESO) was achieved with optimized epoxidation conditions: a molar ratio of U‐FAMEs, acetic acid, and hydrogen peroxide (H 2 O 2 ) of 0.5:1.0:1 after being reacted at 50°C and 100 rpm for 7 h. Via a solution casting method, ESO was then combined with tapioca, corn starch, and tigernut starches to produce bioplastics, and their mechanical properties, transparency, and waterproof performance were evaluated. The results demonstrate that the bioplastic synthesized with ESO and silylated tapioca starch exhibited superior heat stability with a maximum decomposition temperature at 322.2°C, while the one synthesized with ESO and silylated tigernut starches showed enhanced mechanical properties (tensile strength: 4.6 MPa; elongation at break: 22.9%). These results suggest that unsaturated fatty acids derived from sunflower oil refining sludge can be used as a potential precursor in bioplastic fabrication and offer valuable insights for the development of biodegradable alternatives to traditional plastics.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 10","pages":"5378-5388"},"PeriodicalIF":0.0,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147382088","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}

引用次数: 0

Thermoplastic Polyimides With Enhanced Processability and Thermal Stability via Molecular Structure Modulation 通过分子结构调制提高加工性能和热稳定性的热塑性聚酰亚胺

4区工程技术

Polymer Engineering and Science Pub Date : 2025-07-24 DOI: 10.1002/pen.70064

Xianwu Cao, Shiqi Yang, Qilong Huang, Zhiyan Pan, Yixin Xie, Yizhang Tong, Kui He

引用次数: 0

Synthesis and Properties of Branched Waterborne Polyurethane Thickener With Multiple Arms 多支臂水性聚氨酯增稠剂的合成及性能研究

4区工程技术

Polymer Engineering and Science Pub Date : 2025-07-11 DOI: 10.1002/pen.70030

Haikuan Chen, Xiaoyi Sun, Ning Qing, Liuyan Tang

{"title":"Synthesis and Properties of Branched Waterborne Polyurethane Thickener With Multiple Arms","authors":"Haikuan Chen, Xiaoyi Sun, Ning Qing, Liuyan Tang","doi":"10.1002/pen.70030","DOIUrl":"https://doi.org/10.1002/pen.70030","url":null,"abstract":"ABSTRACT Hydrophobically modified ethoxylated urethane (HEUR), a typical polymer associative thickener, is extensively applied in aqueous coatings, textile printing, and resin coatings to regulate the rheological properties of the system. However, conventional branched HEURs face two critical limitations: (1) the risk of excessive cross‐linking during the chain‐expansion stage due to high monomer reactivity; (2) the phase‐separation phenomenon in some branched HEUR aqueous solutions upon standing. To overcome these challenges, we designed and synthesized a polyhydroxy hyperbranched structure (PU‐OH 3‐6 ). This structure features two main advantages: a larger central backbone and a greater spacing between active groups (OH). The hyperbranched HEUR 3‐6 synthesized using PU‐OH 3‐6 as a branched‐type chain extender is more controllable and viable in the production process. Moreover, various testing methods were employed to assess the thickening performance, salt resistance, and water retention of HEUR in a pure‐water system. The results indicated that the branched structures of HEUR 3‐6 have better thickening properties compared with the previously reported HEUR with a linear structure (HEUR L ), and branched HEUR with using gamma‐triol (HEUR GI ), pentaerythritol (HEUR P ), and xylitol (HEUR X ) to expand the chain. Among them, HEUR 5 demonstrated the best thickening effect in pure‐water systems, while in salt‐containing solutions, HEUR 6 with a six‐branched degree showed more pronounced anti‐electrolyte properties.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 9","pages":"4916-4931"},"PeriodicalIF":0.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147334208","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}

引用次数: 1