European Polymer Journal最新文献_第3页

Dynamic covalent network toughened PBAT/MMT thermoplastic nanocomposite through melt grafting and reversible boronic ester crosslinking 通过熔体接枝和可逆硼酯交联，动态共价网络增韧PBAT/MMT热塑性纳米复合材料

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-03-11 Epub Date: 2026-01-28 DOI: 10.1016/j.eurpolymj.2026.114547

Wenbin Wang , Xuefeng Li , Jiwu Qiu , Linrong Che , Wenquan Tao , Shijun Long , Dapeng Li , Yiwan Huang

Poly(butylene adipate-co-terephthalate) (PBAT) emerges as a prominent biodegradable resin aimed at supplanting petroleum-based counterparts to address plastic waste accumulation and environmental pollution concerns. Although enhancing the mechanical and heat-resistant characteristics of PBAT through moderate crosslinking is theoretically feasible, this approach inevitably complicates melt processing due to increased viscosity. Herein, we report the successful preparation of DC_z-PBAT-g-(D_x-co-S_y) by incorporating a reversible boronic ester-based dynamic covalent network (DCN) into PBAT. This was achieved through grafting dioxaborolane monomethacrylate-co-styrene (D_x-co-S_y) copolymers onto the PBAT backbone using dicumyl peroxide (DCP) as the initiator, followed by dynamic crosslinking of the boron-oxygen (B–O) bonds on the grafts with 1,4-phenylenediboronic acid bis(propylene glycol) ester as the dynamic crosslinker. The optimal DC_0.5-PBAT-g-(D₃-co-S₂) exhibited high tensile strength (32.34 MPa) and Young’s modulus (58.47 MPa), representing increases of 45.9 % and 82.5 % compared to pristine PBAT, as well as excellent melt-processability. Further incorporation of long alkyl-linked dendritic montmorillonite (MMT) into DC_0.5-PBAT-g-(D₃-co-S₂) significantly improved resistance to moisture and heat aging in the resulting DC-PBAT/MMT composite. This study introduces a novel strategy to enhance both mechanical performance and reprocessability of PBAT without compromising the processability, via a dynamic covalent network.

聚己二酸丁二酯（PBAT）是一种重要的可生物降解树脂，旨在取代石油基树脂，以解决塑料废物积累和环境污染问题。虽然通过适度交联来提高PBAT的机械和耐热特性在理论上是可行的，但这种方法不可避免地会由于粘度的增加而使熔体加工复杂化。本文报道了在PBAT中加入可逆的硼酯基动态共价网络（DCN），成功制备了DCz-PBAT-g-(Dx-co-Sy)。这是通过以过氧化二氨基（DCP）为引发剂接枝二恶硼烷-单甲基丙烯酸-共苯乙烯（Dx-co-Sy）共聚物到PBAT骨架上，然后以1,4-苯二硼酸二（丙二醇）酯为动态交联剂，在接枝上进行硼氧（B-O）键的动态交联来实现的。优化后的DC0.5-PBAT-g-(D3-co-S2)具有较高的抗拉强度（32.34 MPa）和杨氏模量（58.47 MPa），较原始PBAT分别提高了45.9%和82.5%，并具有良好的熔融加工性。在DC0.5-PBAT-g-(D3-co-S2)中进一步掺入长烷基链枝状蒙脱土（MMT），可显著提高DC-PBAT/MMT复合材料的耐湿性和耐热老化性。本研究提出了一种新的策略，通过动态共价网络，在不影响加工性能的情况下，提高PBAT的机械性能和再加工性能。

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引用次数: 0

Ultra-tough and sustainable epoxy adhesive enabled by microphase separation and dynamic chemical structure 微相分离和动态化学结构使环氧胶粘剂具有超强韧性和可持续性

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-03-11 Epub Date: 2026-01-25 DOI: 10.1016/j.eurpolymj.2026.114538

Nan Li , Tao Liu , Xiangrong Shi , Xiangtao Yu , Bo Jiang

Despite significant efforts in developing high-performance epoxy adhesives, an inevitable trade-off persisted among strong adhesion, high toughness and reprocessability. Here, an epoxy adhesive with high toughness and reprocessability was developed through microphase separation and dynamic chemical structure, effectively addressing the aforementioned challenge. Specifically, the asynchronous ring-opening reactions of aromatic amines and aliphatic amines with epoxy groups resulted in the formation of a phase-separated microstructure in the cured epoxy resin, thereby endowing it with high toughness. Furthermore, the dynamic chemical structure, realized through B-N coordination and dynamic bond exchange of borate esters, enabled epoxy adhesives to have decent environmental stability and reprocessability. Therefore, the acquired epoxy adhesives exhibited superior toughness with a work of debonding of 32927.77 N/m, high adhesive strength of 24.87 MPa, decent environmental resistance (water, extreme temperatures and various solvents) and reprocessability. This strategy of incorporating microphase separation and dynamic chemical structure is expected to provide novel insights into the design of high-performance epoxy adhesives and to facilitate advancements in sustainable polymer materials.

尽管在开发高性能环氧胶粘剂方面做出了重大努力，但在强附着力、高韧性和可再加工性之间仍存在不可避免的权衡。本研究通过微相分离和动态化学结构，开发了一种具有高韧性和可再加工性的环氧胶粘剂，有效地解决了上述挑战。具体来说，芳香胺和脂肪胺与环氧基的不同步开环反应导致固化的环氧树脂中形成相分离的微观结构，从而赋予其高韧性。此外，通过硼酸酯的B-N配位和动态键交换实现的动态化学结构使环氧胶粘剂具有良好的环境稳定性和可再加工性。因此，所制得的环氧胶粘剂具有优异的韧性，其脱粘功为32927.77 N/m，粘接强度高达24.87 MPa，具有良好的耐环境性（水、极端温度和各种溶剂）和可再加工性。这种结合微相分离和动态化学结构的策略有望为高性能环氧胶粘剂的设计提供新的见解，并促进可持续高分子材料的发展。

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引用次数: 0

Proton-gated ‘ON/OFF’ antibacterial polymers: The role of tertiary amine structure and proportion in pH-dependent antibacterial activity 质子门控的“开/关”抗菌聚合物：叔胺结构和比例在ph依赖性抗菌活性中的作用

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-03-11 Epub Date: 2026-01-26 DOI: 10.1016/j.eurpolymj.2026.114543

Yufeng Zhang, Yiqun Zhang, Yini Huangfu, Shuangyang Li, Chuangnian Zhang, Pingsheng Huang, Anjie Dong, Weiwei Wang, Zujian Feng

The amphiphilic balance between cationic and hydrophobic segments is a critical determinant of the trade-off between antibacterial activity and biocompatibility of membranolytic polymers. In tertiary amine-based systems, this balance is dynamic and exquisitely sensitive to the pH of the tissue microenvironment. To elucidate the relationship between polymer composition and antibacterial efficacy across a physiological pH range, we developed a library of polymeric proton-gated membranolytic switches (PPGMSs) composed of butyl methacrylate and various tertiary amines. These switches achieve precise, pH-activated antibacterial activity, which is governed by the equilibrium between cationic (protonated amine) and hydrophobic butyl methacrylate and deprotonated amine domains. The switching pH of these switches increases with a higher proportion of tertiary amine or a decrease in higher amine hydrophobicity. From this library, P(E₆₀/B) emerged as a lead compound, demonstrating potent activity against E. coli and P. aeruginosa under acidic conditions, and minimal cytotoxicity toward mammalian cells at neutral pH (7.4). Mechanistic studies confirmed bacterial membrane disruption as the mode of action. Crucially, P(E₆₀/B) exhibited significant efficacy in a murine peritonitis model, reducing bacterial loads in a dose-dependent manner. This work establishes PPGMSs as a versatile platform for designing precision antimicrobials that leverage microenvironmental cues for selective therapy.

阳离子和疏水段之间的两亲性平衡是膜溶性聚合物抗菌活性和生物相容性之间权衡的关键决定因素。在基于叔胺的系统中，这种平衡是动态的，对组织微环境的pH值非常敏感。为了阐明聚合物组成与生理pH范围内抗菌功效之间的关系，我们建立了一个由甲基丙烯酸丁酯和各种叔胺组成的聚合物质子门控膜解开关（ppgms）文库。这些开关实现精确的，ph活化的抗菌活性，这是由阳离子（质子化胺）和疏水性甲基丙烯酸丁酯和去质子化胺域之间的平衡控制。这些开关的开关pH值随着叔胺比例的增加或高胺疏水性的降低而增加。从这个文库中，P（E60/B）作为先导化合物出现，在酸性条件下对大肠杆菌和铜绿假单胞菌具有有效的活性，在中性pH下对哺乳动物细胞的细胞毒性最小（7.4）。机理研究证实细菌膜破坏是其作用方式。关键是，P（E60/B）在小鼠腹膜炎模型中表现出显著的疗效，以剂量依赖的方式减少细菌负荷。这项工作建立了ppgms作为设计精确抗菌剂的通用平台，利用微环境线索进行选择性治疗。

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引用次数: 0

Substituted cyanoacrylate-based dynamic covalent polymers with intrinsic antioxidation and UV-shielding via cascade thiol-ene addition and Knoevenagel condensation 通过级联巯基加成和Knoevenagel缩合，取代氰基丙烯酸酯基动态共价聚合物具有固有抗氧化和紫外线屏蔽作用

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-03-11 Epub Date: 2026-01-26 DOI: 10.1016/j.eurpolymj.2026.114540

Xiaokang Tian , Dongxiao Han , Kunyan Sui , Lilong Gao

Ultraviolet irradiation and oxidation are the primary factors causing aging in living organisms and organic materials. This study presents a multifunctional chemical group, substituted cyanoacrylate (SCA) group, which exhibits strong ultraviolet absorption capability, excellent antioxidant property. Concurrently, SCA groups undergo C=C bond metathesis reactions under thermal activation, endowing crosslinked networks with reprocess ability. Through synthesis of small-molecule model compound, the UV-absorption and antioxidant characteristics of substituted cyanoacrylate groups were experimentally confirmed. Based on a cascade reaction combining thiol-ene addition and Knoevenagel condensation, we synthesized linear polymers with C=C bonded backbones. This polymer exists as a viscous liquid at ambient temperature (M_n = 3,700 g/mol, T_g = -19°C), functioning as a polymeric UV-absorber/antioxidant. Furthermore, dynamic covalent polymer networks (DCPNs) were prepared using the same reaction with tetrathiol monomers as cross-linkers. This SCA-based DCPN demonstrates high mechanical strength (tensile strength > 17 MPa, elongation at break > 175%), high optical transparency (>90% transmittance for red light), unique UV/oxidation resistance and reprocess ability. These properties establish the material as a sustainable protective coating suitable for demanding applications.

紫外线照射和氧化是导致生物体和有机物老化的主要因素。本研究提出了一种多功能化学基团——取代氰基丙烯酸酯（SCA）基团，它具有较强的紫外吸收能力和优异的抗氧化性能。同时，SCA基团在热活化下进行C=C键复合反应，使交联网络具有再加工能力。通过合成小分子模型化合物，实验证实了取代氰基丙烯酸酯基团的紫外吸收和抗氧化特性。基于巯基加成和Knoevenagel缩合的级联反应，合成了以C=C键为骨架的线性聚合物。该聚合物在常温下（Mn = 3700 g/mol, Tg = -19℃）呈粘性液体存在，具有高分子紫外线吸收剂/抗氧化剂的功能。此外，以四硫醇单体为交联剂，采用相同的反应制备了动态共价聚合物网络（dcpn）。这种基于sca的DCPN具有高机械强度（抗拉强度为17 MPa，断裂伸长率为175%）、高光学透明度（红光透过率为90%）、独特的抗紫外线/抗氧化性和再加工能力。这些特性使该材料成为适合苛刻应用的可持续保护涂层。

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引用次数: 0

Nanoparticle-enhanced functional hydrogels: From design, characterization to their biomedical applications 纳米粒子增强功能水凝胶：从设计、表征到生物医学应用

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-03-11 Epub Date: 2026-01-29 DOI: 10.1016/j.eurpolymj.2026.114548

Xudong Cao , Xin Li , Tao Zhang , Baoli Zha , Sheng Li , Xikuang Yao , Fengwei Huo

Hydrogels have been widely used in biomedical applications due to their appealing properties, such as high-water content, soft texture and attractive biocompatibility. Especially, nanocomposite hydrogels have attracted extensive interests in various fields including flexible electronics. By incorporation of multifunctional nanomaterials into soft polymer matrixes, the physicochemical and biological properties of nanocomposite hydrogels can be greatly enhanced. At present, plenty of nanomaterials, such as metals and metal oxides, and polymeric nanoparticles, have been utilized in the design of nanocomposite hydrogels to satisfy the growing demands in biomedical field. In this review, it introduces the design and characterization of nanocomposite hydrogels with an emphasis on updated biomedical applications including wound healing, tissue engineering, drug delivery and health monitoring. Further, current challenges and future perspectives of nanocomposite hydrogels are illustrated carefully.

水凝胶由于其高含水量、柔软的质地和良好的生物相容性等特性，在生物医学领域得到了广泛的应用。特别是纳米复合水凝胶在包括柔性电子在内的各个领域引起了广泛的兴趣。将多功能纳米材料掺入软性聚合物基质中，可以大大提高纳米复合水凝胶的物理化学和生物性能。目前，为了满足生物医学领域日益增长的需求，大量的纳米材料如金属、金属氧化物、聚合物纳米颗粒等被用于纳米复合水凝胶的设计。本文综述了纳米复合水凝胶的设计和表征，重点介绍了纳米复合水凝胶在伤口愈合、组织工程、药物输送和健康监测等生物医学领域的最新应用。此外，本文还详细阐述了纳米复合水凝胶目前面临的挑战和未来的发展前景。

引用次数: 0

An azide-containing initiator for the cationic ring-opening-polymerization of 2-oxazolines 一种用于2-恶唑啉阳离子开环聚合的含叠氮化物引发剂

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-03-11 Epub Date: 2026-01-20 DOI: 10.1016/j.eurpolymj.2026.114515

Jakob Meyer , Christine Weber , Phil Köhler , Ulrich S. Schubert

Poly(2-oxazoline)s (POx) are a versatile class of polymers synthesized via a living cationic ring-opening polymerization (CROP). This living nature enables the precise control over molar mass, dispersity, and end-group functionality. One common method for end-capping the CROP is through termination with nucleophiles such as sodium azide, which introduces an azide end-group suitable for further click chemistry modifications. However, the functionalization of, in particular, hydrophobic POx with azide end groups for bioconjugation has posed significant synthetic challenges. Herein, we report the development of a novel initiator for the CROP of 2-oxazolines that enables the direct incorporation of an azide functionality at the α-terminus of various POx, including amphiphilic block copolymers. This approach overcomes previous limitations in quenching reactions of hydrophobic POx variants and provides consistently high end group fidelity across a spectrum of POx hydrophilicity. Polymers with an azide end group exhibited excellent reactivity in azide-alkyne cycloaddition reactions. This versatile synthetic platform expands the potential applications of POx in drug delivery systems by providing a reliable method for bioconjugation while maintaining the favorable properties that position POx as a promising PEG alternative in biomedical applications.

聚（2-恶唑啉）s （POx）是一类通过活性阳离子开环聚合（CROP）合成的多用途聚合物。这种活性可以精确控制摩尔质量，分散性和端基功能。对CROP进行端盖的一种常用方法是通过诸如叠氮化钠之类的亲核试剂终止，这引入了适合进一步点击化学修饰的叠氮化末端基。然而，特别是具有叠氮端基的疏水性痘的功能化已经提出了重大的合成挑战。在此，我们报道了一种新的2-恶唑啉类共聚物引发剂的开发，该引发剂能够在包括两亲性嵌段共聚物在内的各种共聚物的α-末端直接结合叠氮化物功能。这种方法克服了以前在疏水痘变异体猝灭反应中的限制，并在痘亲水性谱中提供了一致的高端基团保真度。具有叠氮化物端基的聚合物在叠氮化物-炔环加成反应中表现出优异的反应活性。这种多功能合成平台通过提供可靠的生物偶联方法，扩展了POx在药物输送系统中的潜在应用，同时保持了POx作为生物医学应用中有前途的PEG替代品的有利特性。

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引用次数: 0

Bispyridinium-phenylene-based cationic porous organic polymers for efficient removal of oxoanions from water 用于有效去除水中氧阴离子的双吡啶-苯基阳离子多孔有机聚合物

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-03-11 Epub Date: 2026-01-27 DOI: 10.1016/j.eurpolymj.2026.114544

Zhiye Zheng , Ying Gao , Shunfeng Peng, Jialong Li, Shijie Chen, Hongyu Wang

Heavy-metal-derived oxoanions are major contributors to water contamination, posing serious threats to both the environment and human health. The selective and efficient removal of these oxoanions from water remains a significant scientific and technical challenge. Leveraging the inherent advantages of cationic porous organic polymers (POPs) for anion capture, we report a three-dimensional cationic POP, TEPM-BPymPh, constructed from tetraphenylmethane and bispyridinium-phenylene monomers via two synthetic approaches: direct Sonogashira cross-coupling and post-cyclization of the neutral precursor TEPM-BPyPh. Owing to its high charge density and ion-exchange properties, TEPM-BPymPh effectively adsorbs toxic oxoanions, including MnO₄⁻, ReO₄⁻, CrO₄²⁻, and Cr₂O₇²⁻, from aqueous solutions. In particular, it exhibits an exceptional adsorption capacity for MnO₄⁻ (454 mg g⁻¹), along with excellent selectivity against competing anions and broad pH compatibility. Energy-dispersive X-ray spectroscopy (EDS) elemental mapping and X-ray photoelectron spectroscopy (XPS) analyses confirmed that anion exchange governs the adsorption process. Dynamic flow-through adsorption experiments demonstrated nearly quantitative removal of 0.2 mM MnO₄⁻ at a flow rate of 1 mL min⁻¹, with complete regeneration achieved by washing with HCl solution. Furthermore, both static and dynamic adsorption tests revealed excellent recyclability.

重金属衍生的氧阴离子是造成水污染的主要因素，对环境和人类健康构成严重威胁。从水中选择性和有效地去除这些氧阴离子仍然是一个重大的科学和技术挑战。利用阳离子多孔有机聚合物（POPs）捕获阴离子的固有优势，我们报道了一个三维阳离子POP， TEPM-BPymPh，由四苯基甲烷和双吡啶-苯单体通过两种合成方法构建：直接Sonogashira交叉偶联和中性前体TEPM-BPyPh的后环化。由于其高电荷密度和离子交换性能，TEPM-BPymPh能有效吸附水溶液中的有毒氧阴离子，包括MnO4−、ReO4−、CrO42−和Cr2O72−。特别是，它对MnO4−(454 mg g−1)具有优异的吸附能力，对竞争阴离子具有优异的选择性和广泛的pH相容性。能量色散x射线能谱（EDS）元素映射和x射线光电子能谱（XPS）分析证实了阴离子交换控制了吸附过程。动态流动吸附实验表明，在1 mL min - 1的流速下，几乎可以定量去除0.2 mM MnO4 -，用HCl溶液洗涤可以完全再生。此外，静态和动态吸附试验均显示出优异的可回收性。

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引用次数: 0

Preparation of soluble lignin and its application mechanism in aerogel 水溶性木质素的制备及其在气凝胶中的应用机理

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-03-11 Epub Date: 2026-01-20 DOI: 10.1016/j.eurpolymj.2026.114524

Qian Guo, He-Fei Wan, Xin Zhao, Ce Gao, Run-Cang Sun

The solubility of lignin has long represented a critical bottleneck limiting its broad application. In this study, a novel modified lignin was successfully synthesized using glutamic acid as the modifier via a Mannich reaction, which exhibits excellent water solubility. The aerogel prepared with this modified lignin as the precursor possesses outstanding ion affinity and selectivity for Pb (II). At 298 K, its maximum adsorption capacity for Pb (II) in aqueous solutions reaches 324.88 mg·g⁻¹ (fitted by the Langmuir model). After 5 adsorption–desorption cycles, the adsorption capacity remains at 202.4 mg·g⁻¹ with a capacity retention rate of 62.3%, demonstrating good reusability. Kinetic and isothermal model analyses confirm that the adsorption process follows a monolayer chemisorption mechanism. Density Functional Theory (DFT) calculations reveal that the adsorption mechanism involves coordination bonds and electrostatic interactions. This modified lignin-based aerogel demonstrates significant potential for practical application in industrial lead-containing wastewater treatment.

木质素的溶解度一直是制约其广泛应用的关键瓶颈。本研究以谷氨酸为改性剂，通过曼尼希反应成功合成了一种新型改性木质素，该木质素具有良好的水溶性。以改性木质素为前驱体制备的气凝胶对Pb （II）具有良好的离子亲和性和选择性。在298 K时，其对Pb （II）的最大吸附量达到324.88 mg·g−1（符合Langmuir模型）。经过5次吸附-解吸循环后，吸附容量保持在202.4 mg·g−1，容量保留率为62.3%，具有良好的重复使用性能。动力学和等温模型分析证实了吸附过程遵循单层化学吸附机制。密度泛函理论（DFT）计算表明，吸附机理涉及配位键和静电相互作用。该改性木质素气凝胶在工业含铅废水处理中具有重要的实际应用潜力。

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引用次数: 0

Advances in molecularly imprinted synthetic polymers: from structural principles to functional technologies 分子印迹合成聚合物的进展：从结构原理到功能技术

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-03-11 Epub Date: 2026-01-27 DOI: 10.1016/j.eurpolymj.2026.114542

Samir M.M. Morsi , Morsi M. Morsi , Mahmoud E. Abd El-Aziz

Synthetic recognition polymers (SRPs) are functional materials engineered to selectively bind target molecules through molecular imprinting, where a template directs the arrangement of monomers to form complementary binding cavities. Their synthesis relies on key components: a template, a functional monomer, a crosslinker, and an initiator, which collectively create a stable network capable of mimicking the recognition behavior of antibodies and enzymes. Depending on template monomer interactions, SRPs can be prepared using covalent, non-covalent, or semi-covalent imprinting strategies. Advances in polymer chemistry and fabrication methods have expanded SRP applications in chromatography, sensing, separation membranes, catalysis, drug delivery, and environmental remediation. Increasing attention is given to smart, stimuli-responsive SRPs that modulate binding in response to temperature, pH, ions, light, magnetic fields, or biomolecules. This review summarizes the principles of molecular imprinting, recent technological progress, and emerging trends, highlighting how modern design approaches enable SRPs with improved selectivity, faster response, and tunable functionality. It also outlines future challenges and opportunities in developing next-generation adaptive SRP materials.

合成识别聚合物（SRPs）是一种功能材料，可以通过分子印迹选择性地结合目标分子，其中模板指导单体的排列以形成互补的结合腔。它们的合成依赖于关键成分：模板、功能单体、交联剂和引发剂，它们共同创建了一个稳定的网络，能够模仿抗体和酶的识别行为。根据模板单体相互作用，SRPs可以使用共价、非共价或半共价印迹策略制备。聚合物化学和制造方法的进步扩大了SRP在色谱、传感、分离膜、催化、药物输送和环境修复等方面的应用。越来越多的人关注智能的、刺激响应的SRPs，它们可以根据温度、pH、离子、光、磁场或生物分子调节结合。本文综述了分子印迹的原理、最新技术进展和新兴趋势，重点介绍了现代设计方法如何使SRPs具有更高的选择性、更快的响应速度和可调的功能。它还概述了开发下一代自适应SRP材料的未来挑战和机遇。

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引用次数: 0

Novel vinyl ketone derivative photoinitiators based on different electron-donating groups for LED photopolymerization and 3D printing 基于不同给电子基团的新型乙烯基酮衍生物光引发剂用于LED光聚合和3D打印

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-03-11 Epub Date: 2026-01-26 DOI: 10.1016/j.eurpolymj.2026.114541

Guanhao Ma , Jiangyu Luo , Chao Jiang , Tianmiao Kang , Shining Li , Jinqing Qu

To address the critical limitations of conventional photoinitiators, including complex synthesis, poor LED wavelength matching, and high molecular mobility, this study rationally designed and synthesized ten vinyl ketone derivatives functionalized with diverse electron-donating substituents. Five of these structures, HMPO-4, HMPO-5, HMPO-6, HMPO-7, and HMPO-8 were found to possess excellent photo-initiating activity, with the maximum absorption wavelengths red-shifted to the visible region, with a maximum molar extinction coefficient of more than 24,000 M⁻¹cm⁻¹. The multi-component HMPO initiation system effectively initiated PEGDA polymerization under 405 nm and 480 nm LED irradiation, with HMPO-6 exhibiting optimal performance, achieving CC double bond conversions of 96% and 91%, respectively. Steady-state photodegradation and ESR spectroscopy analyses revealed favorable photochemical properties, along with excellent solubility and biocompatibility. Notably, HMPO-6 demonstrated superior migration stability, exhibiting a minimal migration rate of 0.9%. Furthermore, this novel photoinitiator enabled efficient 3D printing under low-intensity (5 mW/cm²) 405 nm LED irradiation.

为了解决传统光引发剂合成复杂、LED波长匹配性差、分子迁移率高等缺陷，本研究合理设计并合成了十种具有不同给电子取代基的乙烯基酮衍生物。其中，HMPO-4、HMPO-5、HMPO-6、HMPO-7和HMPO-8具有优异的光引发活性，最大吸收波长红移到可见光区，最大摩尔消光系数大于24000 M−1cm−1。多组分HMPO引发体系在405 nm和480 nm LED照射下有效引发PEGDA聚合，其中HMPO-6表现最佳，CC双键转化率分别达到96%和91%。稳态光降解和ESR光谱分析显示了良好的光化学性质，以及良好的溶解度和生物相容性。值得注意的是，HMPO-6表现出优异的迁移稳定性，最小迁移率为0.9%。此外，这种新型光引发剂在低强度（5 mW/cm2） 405 nm LED照射下实现了高效3D打印。

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引用次数: 0