Journal of Polymer Science最新文献_第4页

Rapidly Adaptive Aromatic–Aliphatic Polyester Networks Enabled by TBD-Catalyzed Bond Exchange 由tbd催化的键交换实现的快速自适应芳香-脂肪族聚酯网络

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-08-16 Epub Date: 2026-07-02 DOI: 10.1002/pola.70248

Jyoti, Priti Singh

{"title":"Rapidly Adaptive Aromatic–Aliphatic Polyester Networks Enabled by TBD-Catalyzed Bond Exchange","authors":"Jyoti, Priti Singh","doi":"10.1002/pola.70248","DOIUrl":"https://doi.org/10.1002/pola.70248","url":null,"abstract":"<div>\u0000 \u0000 <p>Aromatic–aliphatic polyester covalent adaptable networks (CANs) were synthesized from dimethyl terephthalate (DMT), 1,4-butanediol (BDO), and pentaerythritol (PER) by organocatalyst-assisted transesterification. Network structure tuning via systematically varying the ratio of difunctional and multifunctional monomers was possible, allowing us to establish a direct relationship between cross-link density and macroscopic properties. Rigid aromatic terephthalate moieties increase mechanical resistance and modulus, while flexible BDO moieties preserve the mechanical deformability of the polymer network. Increased cross-linking, as confirmed by dynamic mechanical analysis, is reflected in the storage modulus and effective cross-link density (<i>ν</i>\u0000 <sub>e</sub> = 2.5 × 10<sup>3</sup> mol/m<sup>3</sup>). Analysis of stress relaxation demonstrates bond exchange at elevated temperature, characteristic of CANs, with an activation energy of about 86 kJ/mol. Significantly higher reactivity of TBD promotes bond-exchange reactions in CANs, providing opportunities for thermal reprocessing and welding, as well as self-healing (UTS: ≥ 95%), which are not observed in catalyst-free controls with inferior mechanical properties and dynamic behavior. High thermal stability (~200°C) enables easy, safe processing and healing of the material below its degradation temperature.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 16","pages":"3453-3461"},"PeriodicalIF":3.9,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752594","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

Modulated Blending of Sulfonated Polyether Ether Ketone and Polystyrene-Ethylene-Butylene Styrene to Form a Stable Polymer Electrolyte in Proton Exchange Membrane Fuel Cells 磺化聚醚醚酮与聚苯乙烯-乙烯-丁烯苯乙烯调制共混在质子交换膜燃料电池中形成稳定的聚合物电解质

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-08-05 Epub Date: 2026-06-08 DOI: 10.1002/pola.70212

Aparna Mahalingam, Ramya Padmanaban, Suraj Punnappadam Rajan, Harshal Agarwal, Vishal M Dhavale, Sreekuttan M Unni, Santoshkumar D Bhat

{"title":"Modulated Blending of Sulfonated Polyether Ether Ketone and Polystyrene-Ethylene-Butylene Styrene to Form a Stable Polymer Electrolyte in Proton Exchange Membrane Fuel Cells","authors":"Aparna Mahalingam, Ramya Padmanaban, Suraj Punnappadam Rajan, Harshal Agarwal, Vishal M Dhavale, Sreekuttan M Unni, Santoshkumar D Bhat","doi":"10.1002/pola.70212","DOIUrl":"https://doi.org/10.1002/pola.70212","url":null,"abstract":"<div>\u0000 \u0000 <p>Sulfonated polyether ether ketone (SPEEK) and sulfonated polystyrene–ethylene–butylene–styrene (SPSEBS) blend membranes were developed as fluorine-free proton exchange membranes (PEMs) for fuel cell applications, with the aim of balancing proton conductivity and long-term durability. Structural and morphological analyses confirmed good miscibility and uniform phase distribution at low SPSEBS loadings. Incorporation of SPSEBS improved membrane flexibility, toughness, and oxidative stability while maintaining adequate ion exchange capacity and hydration. Pristine SPEEK exhibited the highest proton conductivity (0.15 S cm<sup>−1</sup> at 90°C), whereas the SPEEK/SPSEBS (98–2) blend showed more stable polarization behavior and superior voltage retention during durability testing. The enhanced performance of the blend is attributed to improved mechanical integrity, moderated swelling, and greater resistance to oxidative degradation. These results demonstrate that controlled incorporation of SPSEBS provides an effective strategy to develop durable SPEEK-based PEMs for long-term PEMFC operation.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 15","pages":"3194-3205"},"PeriodicalIF":3.9,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148696140","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

Curing Behavior and Structure Reactivity-Property Relationships in Epoxidized Linseed Oil Thermosets Crosslinked With Biobased Eutectic Hardeners 环氧化亚麻籽油热固性树脂与生物基共晶固化剂交联的固化行为和结构反应性能关系

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-08-05 Epub Date: 2026-06-11 DOI: 10.1002/pola.70189

Mona Jamali Moghadam Siahkali, Nathanael Guigo, Luc Vincent, Nicolas Sbirrazzuoli

{"title":"Curing Behavior and Structure Reactivity-Property Relationships in Epoxidized Linseed Oil Thermosets Crosslinked With Biobased Eutectic Hardeners","authors":"Mona Jamali Moghadam Siahkali, Nathanael Guigo, Luc Vincent, Nicolas Sbirrazzuoli","doi":"10.1002/pola.70189","DOIUrl":"https://doi.org/10.1002/pola.70189","url":null,"abstract":"<p>Three eutectic hardeners citric acid/ethyl lactate (CAEL), tartaric acid/ethyl lactate (TAEL) and malic acid/ethyl lactate (MAEL) were used to study the crosslinking behavior of epoxidized linseed oil (ELO), resulting in ELO/CAEL, ELO/TAEL and ELO/MAEL thermoset polymer. This study was performed to investigate the effect of the molecular structure of citric acid, tartaric acid, and malic acid on polymerization and crosslinking kinetics. Nonisothermal DSC was used to determine effective active energy and pre-exponential factors, while DMTA provided insight into the resulting thermomechanical properties. Among the systems, ELO/TAEL showed the lowest activation energy and the most efficient curing profile. TAEL formed the more rigid polymeric network with the highest glass transition temperature. In contrast, ELO/MAEL showed higher reaction rates, primarily due to its higher <i>A</i>\u0000 <sub>α</sub> values. However, its lower hydroxyl content resulted in a less crosslinked network, as reflected by its lower glass transition temperature. In the ELO/CAEL system, the higher functionality and sterically hindered structure of CA displayed intermediate behavior. These results demonstrate that the number of hydroxyl and carboxylic groups determines the kinetic and macroscopic properties of ELO-based thermosets. The findings provide insights into structure reactivity for designing the next generation of biobased thermosetting materials for flooring applications.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 15","pages":"3275-3288"},"PeriodicalIF":3.9,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pola.70189","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148696150","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

Liquid Glass: Polymerizable Silica Precursors for Microstructured Silica Glass Manufacturing: A Review 液体玻璃：用于微结构二氧化硅玻璃制造的可聚合二氧化硅前体：综述

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-08-05 Epub Date: 2026-06-06 DOI: 10.1002/pola.70209

Han Zhang, Lanting Zhang, Haihong Li, Pan Zhou, Zenghui Li, Xin Kang, Na Liu

{"title":"Liquid Glass: Polymerizable Silica Precursors for Microstructured Silica Glass Manufacturing: A Review","authors":"Han Zhang, Lanting Zhang, Haihong Li, Pan Zhou, Zenghui Li, Xin Kang, Na Liu","doi":"10.1002/pola.70209","DOIUrl":"https://doi.org/10.1002/pola.70209","url":null,"abstract":"<p>“Liquid glass”, a silica-based precursor processable via photo- or thermally induced curing, has emerged as a key platform for the fabrication of microscale silica glass structures. In contrast to conventional silica processing, which requires high-temperature melting or harsh chemical treatments, liquid glass allows direct shaping under mild conditions, followed by conversion into dense inorganic glass through controlled thermal treatment. This capability opens a new route for the additive manufacturing of glass components with micro- to nanoscale dimensions. This review provides a detailed classification of liquid glass materials. Their polymerization and glass-conversion mechanisms, including photopolymerization, condensation, and thermally induced network conversion, are systematically discussed. Key processing characteristics—such as achievable resolution, volumetric shrinkage, densification behavior, and compatibility with complex architectures—are compared and analyzed. Recent advances in micro-optics, optoelectronics, microfluidics, security devices, protective structures, and mechanical applications are highlighted. Finally, remaining challenges in material design, processing efficiency, and functional integration are outlined, together with emerging opportunities in intelligent manufacturing, 4D printing, and adaptive or self-healing glass systems.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 15","pages":"3162-3193"},"PeriodicalIF":3.9,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pola.70209","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695818","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

Hyaluronic Acid-Decorated Hollow Nanocapsules for Enhanced Tumor-Targeted Chemotherapy 透明质酸修饰的中空纳米胶囊用于增强肿瘤靶向化疗

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-08-05 Epub Date: 2026-06-11 DOI: 10.1002/pol.20250868

Yiduo Qian, Shina Mao, Zhizhan Ji, Xu Yang, Qiudi Gui, Wenliang Song, Yu Zhang

{"title":"Hyaluronic Acid-Decorated Hollow Nanocapsules for Enhanced Tumor-Targeted Chemotherapy","authors":"Yiduo Qian, Shina Mao, Zhizhan Ji, Xu Yang, Qiudi Gui, Wenliang Song, Yu Zhang","doi":"10.1002/pol.20250868","DOIUrl":"https://doi.org/10.1002/pol.20250868","url":null,"abstract":"<div>\u0000 \u0000 <p>The design of innovative drug nanocarriers with high encapsulation efficiency for targeted therapy remains a pivotal focus in biomedical research. Herein, we employed a combination of Friedel–Crafts crosslinking polymerization and <i>N</i>,<i>N</i>′-dicyclohexylcarbodiimide/4-dimethylaminopyridine-mediated esterification to synthesize hyaluronic acid-decorated hollow nanocapsules (HA-HNs) for the active-targeted delivery of paclitaxel (PTX) to breast cancer cells. HA-HNs exhibited uniform hollow spheres with a distinctive sea-urchin-like morphology, characterized by an average external diameter of ~196 nm. Structural analysis revealed a hierarchical porous architecture featuring abundant micropores and mesopores, with a specific surface area of 558 m<sup>2</sup>/g and a pore size distribution primarily within the 3–5 nm range. The HA-HNs demonstrated a high drug entrapment efficiency of up to 45.83%. In vitro drug release studies indicated that cumulative PTX release was significantly restricted under neutral pH conditions, whereas accelerated release occurred under acidic conditions, confirming the pH-responsivity of PTX@HA-HNs. Moreover, PTX@HA-HNs exhibited significantly higher cytotoxicity against MCF-7 cells compared to non-targeted PTX@HNs, likely due to enhanced cellular internalization mediated by CD44 receptor binding. These results highlight the potential of HA-HNs as promising nanocarriers for targeted drug delivery in cancer therapy.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 15","pages":"3264-3274"},"PeriodicalIF":3.9,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148696149","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

Cholesteric Liquid Crystal Polymer Network/Patterned Quarter-Waveplate Composite Film for Anti-Counterfeiting 胆甾型液晶聚合物网络/图案四分之一波片复合防伪膜

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-08-05 Epub Date: 2026-06-04 DOI: 10.1002/pola.70211

Daofeng Zang, Wei Liu, Yi Li, Yonggang Yang

{"title":"Cholesteric Liquid Crystal Polymer Network/Patterned Quarter-Waveplate Composite Film for Anti-Counterfeiting","authors":"Daofeng Zang, Wei Liu, Yi Li, Yonggang Yang","doi":"10.1002/pola.70211","DOIUrl":"https://doi.org/10.1002/pola.70211","url":null,"abstract":"<div>\u0000 \u0000 <p>Cholesteric liquid crystal (CLC) polymer network (CLCN) patterns for decoration have been well-developed. However, those for anti-counterfeiting are still limited. Herein, the CLCN films were used for selectively reflecting circularly polarized light that matches their handedness, and the nematic liquid crystal polymer network (NLCN) films with different thicknesses were used as the waveplates for manipulating the polarization states of the lights. A CLC mixture was prepared using LC242 and a photoisomerizable chiral dopant. Upon the irradiation of the 365-nm UV light, this CLC mixture changes to a nematic liquid crystal mixture due to the photoisomerization of the chiral dopant. Then, a patterned quarter-waveplate composed of CLCN and NLCN was prepared using this CLC mixture and a photomask through a two-step approach. The CLCN/patterned quarter-waveplate composite film was prepared by directly coating and curing a CLC mixture on the patterned quarter-waveplate surface. Since the quarter-waveplate can change the circularly polarized light to linearly polarized light, although the pattern is invisible under natural light, it is visible under linearly polarized light. The results shown here not only give us a better understanding of the effect of waveplates, but also lay the foundation for the anti-counterfeiting CLCN/NLCN composite film.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 15","pages":"3125-3133"},"PeriodicalIF":3.9,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695805","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

Acetylene Additive Effects on Processing and Thermo-Mechanical Properties of Analogous Phthalonitrile Resins 乙炔添加剂对类似邻苯二腈树脂加工及热力学性能的影响

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-08-05 Epub Date: 2026-06-08 DOI: 10.1002/pola.70220

James D. Sitter, Randinu Pulukkody, Lara Skibbie, Zachariah J. K. Jones, Jennifer L. Dysart, Matthew Laskoski

引用次数: 0

Functional Characteristics of Ultrathin Polydiacetylene Films Controlled by Their Non-Covalent Modification With Curcuminoid 姜黄素非共价修饰控制超薄聚二乙炔膜的功能特性

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-08-05 Epub Date: 2026-06-10 DOI: 10.1002/pola.70219

Alvina V. Berleva, Nataliya G. Skvortsova, Bulat S. Akhmadeev, Asiya R. Mustafina, Sergey N. Podyachev, Sergey I. Pozin, Valery V. Prokhorov, Alexey A. Stupnikov, Sofiya L. Selektor

{"title":"Functional Characteristics of Ultrathin Polydiacetylene Films Controlled by Their Non-Covalent Modification With Curcuminoid","authors":"Alvina V. Berleva, Nataliya G. Skvortsova, Bulat S. Akhmadeev, Asiya R. Mustafina, Sergey N. Podyachev, Sergey I. Pozin, Valery V. Prokhorov, Alexey A. Stupnikov, Sofiya L. Selektor","doi":"10.1002/pola.70219","DOIUrl":"https://doi.org/10.1002/pola.70219","url":null,"abstract":"<div>\u0000 \u0000 <p>The properties of single-component Langmuir monolayers based on 10,12-pentacosadiynoic acid (PCDA) and films formed by its photopolymerization (polyPCDA) have been compared with analogous monolayers and polymer films based on the mixture of PCDA and a boron difluoride complex with hemicurcuminoid (CurBF<sub>2</sub>). Structural, morphological, and optical properties of both systems are investigated using Langmuir monolayer compression isotherms, atomic force microscopy (AFM), Brewster angle microscopy, UV–Vis spectroscopy, fluorescence spectroscopy, and fluorescence microscopy. It was discovered that presence of the CurBF<sub>2</sub> complex in the system profoundly influences the film morphology and its optical properties. Furthermore, CurBF<sub>2</sub> substantially lowers the activation barrier for polymerization at the air-water interface. This study demonstrates that the structural and chromatic characteristics of planar polyPCDA polymer assemblies are significantly altered by the incorporation of the CurBF<sub>2</sub> complex into the polymer structure. This results in the emergence of novel morphologies and unique optical properties and opens up prospects for improving the functional characteristics of the mixed system. In particular, the mixed film exhibits synergistically enhanced fluorescent response to Pb<sup>2+</sup> compared to polyPCDA itself. Moreover, the revealed effect of CurBF<sub>2</sub> on the above properties of the mixed films allows monitoring the fluorescence response to lead ions through two fluorescence channels.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 15","pages":"3238-3253"},"PeriodicalIF":3.9,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695799","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

Supramolecular Surface Functionalization of Single-Walled Carbon Nanotubes With Conjugated Graft Copolymers 单壁碳纳米管共轭接枝共聚物的超分子表面功能化

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-08-05 Epub Date: 2026-06-19 DOI: 10.1002/pola.70226

Shagana Kukendran, Alex Adronov

{"title":"Supramolecular Surface Functionalization of Single-Walled Carbon Nanotubes With Conjugated Graft Copolymers","authors":"Shagana Kukendran, Alex Adronov","doi":"10.1002/pola.70226","DOIUrl":"https://doi.org/10.1002/pola.70226","url":null,"abstract":"<p>Functionalizing single-walled carbon nanotubes (SWNTs) without introducing defects on their side walls and altering their optoelectronic properties remains an ongoing challenge. Here, two methodologies are outlined for non-covalently functionalizing the nanotube surface with bio-based and biodegradable poly(L-lactide) chains of varying molecular weight, utilizing the inverse-electron-demand Diels-Alder (IEDDA) reaction and ring-opening polymerization (ROP). Poly(tetrazine-co-fluorene) polymers were synthesized and subsequently reacted with 5-norbornene-2-methanol via IEDDA chemistry. Oxidation of the resulting adducts yielded poly(pyridazine) structures bearing free hydroxyl groups, which served as co-initiators for the ring-opening polymerization of L-lactide. The graft copolymers were used to prepare polymer-nanotube complexes decorated with polylactic acid chains having molecular weight up to 20 kDa, as confirmed by NMR spectroscopy, thermogravimetric analysis, and atomic force microscopy. Alternatively, poly(pyridazine) bound SWNTs with reactive hydroxyl groups were prepared to polymerize L-lactide by surface-initiated ROP through the “grafting from” approach. This method resulted in polylactic acid chains with molecular weights up to 5 kDa without causing any defects to the nanotubes.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 15","pages":"3310-3320"},"PeriodicalIF":3.9,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pola.70226","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148696432","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

The Role of Polycarbodiimide in PET Monofilaments: An Investigation on Hydrolytic Stability, Crystallization Behavior, and Mechanical Properties 聚碳二亚胺在PET单丝中的作用：水解稳定性、结晶行为和力学性能的研究

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2026-08-05 Epub Date: 2026-06-04 DOI: 10.1002/pola.70215

Zhongli Zhang, Yingliang Zhang, Yuhua Wang, Yining Hao, Kang Chen, Xianming Zhang

{"title":"The Role of Polycarbodiimide in PET Monofilaments: An Investigation on Hydrolytic Stability, Crystallization Behavior, and Mechanical Properties","authors":"Zhongli Zhang, Yingliang Zhang, Yuhua Wang, Yining Hao, Kang Chen, Xianming Zhang","doi":"10.1002/pola.70215","DOIUrl":"https://doi.org/10.1002/pola.70215","url":null,"abstract":"<div>\u0000 \u0000 <p>Polyethylene terephthalate (PET) monofilaments offer excellent performance, yet their susceptibility to hydrolytic degradation in high-humid environments severely limits their long-term application. Polycarbodiimide (PCDI) was incorporated as a hydrolytic stabilizer at varying contents (0–2.5 wt%) via a melt-blending spinning process. The effect of PCDI contents on the hydrolytic stability, crystallization behavior, and mechanical properties of the monofilaments was systematically investigated. The results demonstrate that PCDI content at or below 1.5 wt% promotes lamellar lateral growth and molecular orientation compared to those of net PET monofilament. These microstructural modifications significantly enhance the monofilaments' hydrolytic stability and thermal resistance while maintaining excellent mechanical properties. Specifically, the PET/PCDI-1.5 monofilament, with 1.5 wt% PCDI, exhibits a breaking stress of 441.39 MPa and a breaking elongation of 31.77%. After 14 days of hygrothermal aging, its retention rates of breaking stress and breaking elongation reach 80.37% and 57.35%, respectively, significantly higher than those of pure PET monofilament. However, exceeding 1.5 wt% PCDI leads to phase separation, disrupts lamellar order, and induces thermal degradation, thereby compromising the breaking stress. This study identifies the optimal PCDI content and clarifies the underlying microstructural regulation mechanism for developing durable PET monofilaments.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 15","pages":"3134-3146"},"PeriodicalIF":3.9,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695807","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