European Polymer Journal最新文献_第8页

pH-and NIR-responsive sericin-coated magnetic graphene quantum dots for enhanced lung cancer therapy ph和nir响应丝胶涂层磁性石墨烯量子点增强肺癌治疗

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-02-11 Epub Date: 2025-12-30 DOI: 10.1016/j.eurpolymj.2025.114455

Farimah Alidousti , Habib Razmi , Homayon Ahmad Panahi , Elham Moniri

{"title":"pH-and NIR-responsive sericin-coated magnetic graphene quantum dots for enhanced lung cancer therapy","authors":"Farimah Alidousti , Habib Razmi , Homayon Ahmad Panahi , Elham Moniri","doi":"10.1016/j.eurpolymj.2025.114455","DOIUrl":"10.1016/j.eurpolymj.2025.114455","url":null,"abstract":"<div><div>Erlotinib therapy for non-small cell lung cancer is limited by poor solubility and a lack of targeted delivery, leading to systemic adverse effects. To address this, a novel near-infrared (NIR) light-triggered nanoplatform was developed using a pH- and thermoresponsive polymer functionalized with sericin-grafted strontium hexaferrite/graphene quantum dots. The drug adsorption process was optimized using response surface methodology, and the Langmuir isotherm and pseudo-second-order kinetic models confirmed monolayer sorption on a homogeneous surface. Under acidic conditions at high temperature, the system demonstrated a controlled release of 63.10 % of the erlotinib, which was best described by the Korsmeyer-Peppas model, indicating a non-Fickian diffusion mechanism. The significance of this platform was highlighted by its dramatic response to external stimuli, achieving a 100 % drug release rate upon NIR laser irradiation for 45 min. This on-demand capability translated to potent biological effects, while the blank nanocarrier was non-cytotoxic, the erlotinib-loaded nanocomposite induced significant cell death in A549 lung cancer cells, with flow cytometry confirming an apoptosis/necrosis rate of 7.07 %. Biocompatibility of the novel nanocomposite has been extensively verified through platelet adhesion, hemolysis assay, and partial thromboplastin time test. This study presents a highly promising and stimuli-responsive strategy for the precise and effective delivery of erlotinib.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"243 ","pages":"Article 114455"},"PeriodicalIF":6.3,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A definitive molecular design strategy towards coumarin-based polymers exhibiting reversible acid/base responsivity and high solubility −Exploring the effects of substituent groups at the C4 position of asymmetric coumarin monomer on their ring-opening and closing properties- 具有可逆酸碱反应性和高溶解度的香豆素基聚合物的确定分子设计策略-探索不对称香豆素单体C4位置取代基对其开环和闭环性能的影响-

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-02-11 Epub Date: 2026-01-02 DOI: 10.1016/j.eurpolymj.2025.114491

Yuya Kaneko, Aohan Wang

{"title":"A definitive molecular design strategy towards coumarin-based polymers exhibiting reversible acid/base responsivity and high solubility −Exploring the effects of substituent groups at the C4 position of asymmetric coumarin monomer on their ring-opening and closing properties-","authors":"Yuya Kaneko, Aohan Wang","doi":"10.1016/j.eurpolymj.2025.114491","DOIUrl":"10.1016/j.eurpolymj.2025.114491","url":null,"abstract":"<div><div>Innovative coumarin-based π-conjugated polymers have been successfully developed, possessing remarkable solubility and reversible alteration of fluorescence in response to changes in acid and base. Through meticulous molecular design, we synthesized two novel dibromo coumarin monomers: 3,7-dibromo-4-methyl-8-octyloxycoumarin and 3,6-dibromo-7,8-dioctyloxy-4-methylcoumarin. By strategically introducing the alkoxy side chains into the benzene ring, rather than the α-pyrone ring of the coumarin backbone, we achieved exceptional ring-opening and ring-closing properties within the polymer mainchain. The resulting coumarin polymers exhibit high molecular weight and reversible turn-on/off fluorescence. Moreover, the effects of the position of the alkoxy side chain on the ring-opening and ring-closing properties were investigated by using coumarin-based model compounds. Our research involved the synthesis of models featuring methyl, methoxy, and octyloxy moieties at the C4 position, along with an octyloxy chain at the C8 position. The results revealed that the positioning of the alkoxy chain plays a pivotal role that directly influences the ring-opening and ring-closing mechanism in the coumarin unit. Furthermore, the chemical structures of the ring-opened coumarin polymer in the basic state and the ring-closed coumarin polymer in the acidic state were examined. We found clear evidence in the ring-opened form that the C=O double bonds in the lactone ring converted to the COO<sup>−</sup> chelate structure in FT-IR spectra, and potassium was detected in XPS spectra.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"243 ","pages":"Article 114491"},"PeriodicalIF":6.3,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reprocessable and 3D-printable polyurethane thermosets with dynamic covalent urea networks 可再加工和3d打印聚氨酯热固性与动态共价尿素网络

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-02-11 Epub Date: 2025-12-30 DOI: 10.1016/j.eurpolymj.2025.114479

Baoyun Cao, Chuanzheng Ren, Jianjun Bao

{"title":"Reprocessable and 3D-printable polyurethane thermosets with dynamic covalent urea networks","authors":"Baoyun Cao, Chuanzheng Ren, Jianjun Bao","doi":"10.1016/j.eurpolymj.2025.114479","DOIUrl":"10.1016/j.eurpolymj.2025.114479","url":null,"abstract":"<div><div>Conventional photocurable polyurethanes possess permanently crosslinked networks that impede recyclability, thereby raising significant environmental concerns. In this work, a general molecular strategy is proposed to impart dynamic reversibility to photocurable systems by incorporating dynamic covalent bonds into both the prepolymer and crosslinker domains. Tert-Butylaminoethyl methacrylate (TBEMA) was utilized to construct a dynamic urea-based crosslinker (HTB) and to end-cap polyurethane prepolymers, ensuring chemical compatibility within the system. By combining these components with flexible (CTFA) or rigid (IBMA) active diluents, a series of UV-curable formulations suitable for digital light processing (DLP) were developed. The cured flexible and rigid resins exhibited tensile strengths of approximately 12 MPa and over 45 MPa, respectively, along with excellent printing fidelity. Rheological analysis revealed a persistent long relaxation process within the networks, which fundamentally governs their thermomechanical behavior and directly guided the selection of hot-pressing as the optimal reprocessing technique. Leveraging this dynamic character, the crosslinked networks were successfully reprocessed via hot-pressing. Furthermore, a practical recycling route for mixed polyurethane waste was established by blending the reprocessed resins with virgin thermoplastic polyurethane (TPU), affording homogeneous composites with well-preserved mechanical integrity. This study provides a versatile molecular design paradigm for recyclable thermosetting resins and contributes to advancing the sustainability of photocurable 3D printing materials.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"243 ","pages":"Article 114479"},"PeriodicalIF":6.3,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonconventional fluorescent copolymers synthesized from cyclic carbonates and diazoacetates via a post-addition strategy 由环碳酸盐和重氮乙酸酯通过加成策略合成的非常规荧光共聚物

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-02-11 Epub Date: 2026-01-02 DOI: 10.1016/j.eurpolymj.2025.114492

Xiang-Xiang Jia, Hong-Lei Li, Xiao-Jie Lu, Xiao-Chi Li, Zhi-Ling Ye, Xu Wang, Jun-Chuan Wang, Hui Wang, Xiang-Feng Wu

{"title":"Nonconventional fluorescent copolymers synthesized from cyclic carbonates and diazoacetates via a post-addition strategy","authors":"Xiang-Xiang Jia, Hong-Lei Li, Xiao-Jie Lu, Xiao-Chi Li, Zhi-Ling Ye, Xu Wang, Jun-Chuan Wang, Hui Wang, Xiang-Feng Wu","doi":"10.1016/j.eurpolymj.2025.114492","DOIUrl":"10.1016/j.eurpolymj.2025.114492","url":null,"abstract":"<div><div>Aliphatic polycarbonates have attracted significant attention for their biodegradability and biocompatibility, yet there are also limitations impacting their applications, which usually need to be further optimized by post modification. Carbene polymerization of diazocompounds is an alternative method to undergo further modification for the aliphatic polycarbonates, due to its unique advantage of synthesizing highly functionalized polymers. In this work, the copolymerization of cyclic carbonates with diazoacetates was achieved through a post-addition strategy with the sequence of “cyclic monomer first added, followed by diazoacetate” catalyzed by Sn(Oct)<sub>2</sub>. Notably, the resulting nonconventional cyclic carbonate-diazoacetate copolymers exhibit novel fluorescence property despite lacking traditionally known conjugated fluorescent chromophores. In addition, its thermal stability can also be adjusted conveniently via multiple approaches by varying the monomers, or altering the feed ratio of the two kinds of monomers, or regulating the molecular weight of the copolymers.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"243 ","pages":"Article 114492"},"PeriodicalIF":6.3,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photoresponsive and UCST-Type thermoresponsive block Copolymer-Based composite micelles for Dual-Stimuli-Triggered selective and programmable release 用于双刺激触发选择性和可编程释放的光响应和ucst型热响应嵌段共聚物复合胶束

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-02-11 Epub Date: 2025-12-24 DOI: 10.1016/j.eurpolymj.2025.114472

Ruizhen Zhang , Chengwen Jin , Pengjie Xie , Tao Chen

{"title":"Photoresponsive and UCST-Type thermoresponsive block Copolymer-Based composite micelles for Dual-Stimuli-Triggered selective and programmable release","authors":"Ruizhen Zhang , Chengwen Jin , Pengjie Xie , Tao Chen","doi":"10.1016/j.eurpolymj.2025.114472","DOIUrl":"10.1016/j.eurpolymj.2025.114472","url":null,"abstract":"<div><div>The coordinated release of multiple substances presents a significant technical challenge, primarily due to their distinct release kinetics and potential intermolecular interactions. To address this, we developed a composite nanoreactor and strategically selected two hydrophobic fluorescent dyes, Coumarin 102 and Nile Red, as model payloads. Firstly, a photoresponsive block copolymer, P(DMA<sub>50</sub>-<em>b</em>-SPMA<sub>60</sub>) (<strong>P1</strong>), containing carbamate spiropyran methacrylate units, and a thermoresponsive block copolymer with an Upper Critical Solution Temperature (UCST), P(DMA<sub>50</sub>-<em>b</em>-SBMA<sub>48</sub>) (<strong>P2</strong>), were synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. These copolymers self-assembled into micelles, which encapsulated Coumarin 102 and Nile Red within the hydrophobic cores of <strong>P1</strong> and <strong>P2</strong>, respectively. The individual stimulus-responsive release profiles were monitored via fluorescence spectroscopy. Composite nanoreactors were then prepared by physical blending the two loaded micelle types. The stability of the composite system was verified by fluorescence spectroscopy, transmission electron microscopy (TEM), and differential scanning calorimetry (DSC). Upon exposure to specific stimuli (light or temperature), selective release of the respective hydrophobic molecules was achieved: UV irradiation triggered a 80% release of Coumarin 102 from <strong>M3</strong> micelles, while heating above the UCST induced a 75% release of Nile Red from <strong>M4</strong> micelles. The composite micelles thus integrate multiple orthogonal stimulation responses with precise selective release control, offering a promising platform for advanced controlled-release applications in nanotechnology and biotechnology.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"243 ","pages":"Article 114472"},"PeriodicalIF":6.3,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Curcumin improvised antibacterial and antioxidant activities of silk fibroin/gelatin/polycaprolactone composite nanofibrous matrix performing superior ocular surface regeneration 姜黄素增强了丝素/明胶/聚己内酯复合纳米纤维基质的抗菌和抗氧化活性，表现出优异的眼表再生能力

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-02-11 Epub Date: 2025-12-19 DOI: 10.1016/j.eurpolymj.2025.114462

Soumya Shuvra Smita, Krishna Pramanik

{"title":"Curcumin improvised antibacterial and antioxidant activities of silk fibroin/gelatin/polycaprolactone composite nanofibrous matrix performing superior ocular surface regeneration","authors":"Soumya Shuvra Smita, Krishna Pramanik","doi":"10.1016/j.eurpolymj.2025.114462","DOIUrl":"10.1016/j.eurpolymj.2025.114462","url":null,"abstract":"<div><div>The study aims to develop a biomimetic polymeric matrix consisting of silk fibroin, gelatin, and polycaprolactone polymers with antioxidant and antimicrobial properties by adding different concentrations ranging 1–10 mM of curcumin resulting SGPC<sub>1</sub>, SGPC<sub>2.5</sub>, SGPC<sub>5</sub>, and SGPC<sub>10</sub> respectively. All the fabricated mats exhibited morphological similarity and peak shifts in FTIR spectra confirming the interaction between curcumin and SGP mats. SGPC<sub>10</sub> and SGPC<sub>5</sub> mat possess higher tensile strength of 4.9 ± 0.14 MPa and 4.3 ± 0.2 MPa. An insignificant decrease in transparency was observed as compared to control with the addition of curcumin. Moreover, SGPC<sub>5</sub> and SGPC<sub>10</sub> mats demonstrated a respective controlled degradation rate of 43.66 ± 1.52 % and 42.66 ± 2.08 %. An enhanced antimicrobial and antioxidant properties achieved with SGPC<sub>5</sub> and SGPC<sub>10</sub> mats. The cytocompatibility of the mats ensured that the curcumin does not negatively affect the cellular growth and attachment of SIRC (Statens Seruminstitut rabbit cornea) cell line. SGPC<sub>5</sub> construct exhibited higher cell viability, cell attachment, and denser cytoskeleton arrangement, indicating its potentiality for regeneration of ocular surface.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"243 ","pages":"Article 114462"},"PeriodicalIF":6.3,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Orthogonal imine and disulfide exchange in a biobased covalent adaptable network: toward healable and recyclable thermosets 正交亚胺和二硫交换在一个生物基共价适应性网络：朝着可治疗和可回收的热固性

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-02-11 Epub Date: 2025-12-24 DOI: 10.1016/j.eurpolymj.2025.114473

Yulu Wang , Fengxiang Cao , Gang Liu , Zhen Fang , Zhuhui Qiao

{"title":"Orthogonal imine and disulfide exchange in a biobased covalent adaptable network: toward healable and recyclable thermosets","authors":"Yulu Wang , Fengxiang Cao , Gang Liu , Zhen Fang , Zhuhui Qiao","doi":"10.1016/j.eurpolymj.2025.114473","DOIUrl":"10.1016/j.eurpolymj.2025.114473","url":null,"abstract":"<div><div>The development of biobased thermosetting materials has garnered considerable interest as a promising alternative to conventional thermosets, which are often constrained by permanent cross-linking and dependence on petroleum-derived feedstocks. Nevertheless, both traditional and bio-based thermosets frequently exhibit limitations in reprocessability and recyclability. In this study, a novel epoxy covalent adaptable network (CAN) incorporating dynamic dual-crosslinking bonds (D-DCB) was synthesized from lignin-derived vanillin (VA) and glycerol propoxylate triglycidyl ether (GPTE). Specifically, a trialdehyde monomer (TAM) was first prepared from VA and GPTE, which subsequently reacted with disulfide-containing compounds (4,4′-diaminodiphenyl disulfide and cystamine) to form bio-based CANs (namely, TAM-APDS and TAM-Cys, respectively). This network synergistically combines imine and disulfide bonds as dynamic covalent units. The imine bonds not only provide fundamental mechanical strength and structural stability but also contribute UV-shielding properties due to their conjugated structure. The disulfide bonds impart reprocessability, self-healing capability, and degradability-enabling rapid disulfide exchange reactions within 1 h using a thiol/ethanol solution at 60 °C. Lap-shear adhesion tests on various substrates demonstrated that the resulting CANs exhibit a high strength of approximately 7 MPa on iron substrates, highlighting their potential as high-performance sustainable adhesives.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"243 ","pages":"Article 114473"},"PeriodicalIF":6.3,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “Fabrication of injectable dexamethasone-loaded hydrogel microparticle via microfluidic technique for biomedical applications” [Eur. Polym. J. 225 (2025) 113740] “通过生物医学应用的微流体技术制备可注射地塞米松负载的水凝胶微粒”的勘误表[欧洲]。变异较大。J. 225 (2025) 113740]

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-02-11 Epub Date: 2026-01-16 DOI: 10.1016/j.eurpolymj.2026.114513

Sanaz Alizadeh , Saber Ezzatpour , Ibrahim Zarkesh , Heber Vazquez , Gino Lopez , Marjan Mirsalehi , Mosleh Kadkhoda-Mohammadi , Zohreh Bagher , Seyed Mohammad Davachi

引用次数: 0

Triethoxysilyl group containing amidophosphonates and amidophosphates and polysilsesquioxanes based on them: synthesis and non-conventional luminescent properties 含偕胺膦酸酯、偕胺膦酸酯和基于它们的聚硅氧烷的三乙氧基硅氧基：合成及其非常规发光性能

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-02-11 Epub Date: 2025-12-23 DOI: 10.1016/j.eurpolymj.2025.114469

Ivan A. Strelkov , Tatiana P. Gerasimova , Sergey A. Katsyuba , Artemiy G. Shmelev , Elmira A. Vasilieva , Ayrat R. Khamatgalimov , Radis R. Gainullin , Kirill V. Kholin , Almaz A. Zagidullin

{"title":"Triethoxysilyl group containing amidophosphonates and amidophosphates and polysilsesquioxanes based on them: synthesis and non-conventional luminescent properties","authors":"Ivan A. Strelkov , Tatiana P. Gerasimova , Sergey A. Katsyuba , Artemiy G. Shmelev , Elmira A. Vasilieva , Ayrat R. Khamatgalimov , Radis R. Gainullin , Kirill V. Kholin , Almaz A. Zagidullin","doi":"10.1016/j.eurpolymj.2025.114469","DOIUrl":"10.1016/j.eurpolymj.2025.114469","url":null,"abstract":"<div><div>Unconventional luminescence caused by hindered intra- and intermolecular mobility of molecules is of great research interest in science and technology. However, the lack of data on the effect of the structure of such compounds on the process of aggregation-induced emission and the underdevelopment of existing synthetic approaches make these studies difficult. We have developed new non-classical luminophores based on amidophosphonate and amidophosphate containing polysilsesquioxanes obtained by a simple two-stage synthetic route: monomers were obtained by nucleophilic substitution reactions at the P(V) atom, and the corresponding polymers were obtained by hydrolytic polymerization. Luminescent properties of both monomers and polymers were described, and it was shown that luminescence by cluster aggregation is also characteristic of low-molecular luminophores.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"243 ","pages":"Article 114469"},"PeriodicalIF":6.3,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recyclable polysiloxane-urethane elastomers with high robustness via dual phase separation strategy 双相分离可回收聚硅氧烷-聚氨酯弹性体

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-02-11 Epub Date: 2025-12-30 DOI: 10.1016/j.eurpolymj.2025.114481

Shengqiang Wang , Zhiyao Qiao , Yier Zhao , Yong Zhang

{"title":"Recyclable polysiloxane-urethane elastomers with high robustness via dual phase separation strategy","authors":"Shengqiang Wang , Zhiyao Qiao , Yier Zhao , Yong Zhang","doi":"10.1016/j.eurpolymj.2025.114481","DOIUrl":"10.1016/j.eurpolymj.2025.114481","url":null,"abstract":"<div><div>How to develop mechanically robust and recyclable silicone elastomers is still a challenge in polymer field. Polysiloxane-urethane (PDMS-PU) elastomers with hydrogen bonds and aromatic disulfide bonds as dual dynamic bonds were synthesized. Vinyl-terminated polydimethylsiloxane (PDMS) prepared by anionic ring-opening polymerization of octamethylcyclotetrasiloxane was modified by <em>β</em>-mercaptoethanol to introduce hydroxyl group via a thiol-ene click reaction, and the resultant modified PDMS was mixed with dicyclohexylmethane-4,4′-diisocyanate and bis(4-hydroxyphenyl) disulfide to obtain PDMS-PU elastomers. To further improve the mechanical properties of the PDMS-PU elastomers, hydroxyl-terminated polybutadiene (HTPB) was introduced to partially substitute the modified PDMS as a secondary soft segment, obtaining PB modified PDMS-PU elastomers. The spectra of <sup>1</sup>H NMR and FTIR verified the successful incorporation of dual dynamic bonds in all the elastomers. DSC curves verified there were two phases in the domain of soft segments, corresponding to the two components of PDMS and PB. XRD and SAXS curves verified the partial substitution of HTPB promote the refinement of the microdomains. All the elastomers have good mechanical properties, with the tensile strength in the range of 6.6–12.2 MPa and the elongation at break in the range of 354 %–455 %. Moreover, all the elastomers demonstrate excellent reprocessability via hot-pressing due to the multiple dynamic bonds, retaining the tensile strength over 6 MPa and the elongation at break about 300 % after three recycling cycles. The integration of robustness, toughness, and recyclability renders these polysiloxane-urethane elastomers promising candidates for sustainable flexible devices operating in low-temperature environments.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"243 ","pages":"Article 114481"},"PeriodicalIF":6.3,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0