European Polymer Journal最新文献_第5页

Synergistic integration of photoacid and acid-cleavable groups in polymers: An alternative approach to photo-responsive micelles for photo-switchable drug release 聚合物中光酸和酸可切割基团的协同整合：光响应胶束的另一种方法，用于光切换药物释放

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-01-02 DOI: 10.1016/j.eurpolymj.2026.114496

Yangyang Hu , Ammara Aslam , Runsha Zhai , Yinan Zeng , Silu Wang , Haofei Yang , Anjie Dong , Jianhua Zhang

Due to the advantages of precisely spatiotemporal control and noninvasive manner, the photo-activated micelles derived from photo-responsive block copolymers have found extensive applications in controllable drug delivery systems. However, their practical utility is often constrained, due to the commercial unavailability and high difficulty in synthesis of polymerizable photosensitive monomers, tough challenge in integration of robust blood circulation ability, high toxicity of the metabolite of conventional photo-sensitive O-nitrobenzyl and azobenzene molecules. Herein, a methacryloyl-carrying, polymerizable photoacid generator (MAPDST) was synthesized and used as monomer to prepare amphiphilic photo-responsive block copolymers (PPMT) by RAFT copolymerization with acid-cleavable monomer (TTMA) in the presence of hydrophilic PEGlyated macro-RAFT agent. The structure and physicochemical characteristics of PPMT and corresponding photo-responsive micelles (PPMT NPs) were characterized. The results demonstrated that the PPMT NPs can not only have a high stability for storage and blood circulation as well as good biocompatibility, but also can quickly generate protons and thus strong acidity under UV irradiation, leading to a significant swelling and disassembly by hydrolysis of acid-cleavable TTMA segment and thus achieving a photo-switchable on–off drug release profile. This study indicated the synergistic integration of photoacid and acid-cleavable groups in polymers can provide a facile and promising strategy to endow acid-sensitive polymers and corresponding nanocarriers with desirable photo-responsiveness by photo-triggered cascade reactions. Apparently, considering the multifarious acid-sensitive groups, this new strategy can expand the substrate range of photo-responsive polymer materials and offer alternatives to develop photo-sensitive materials without the limitations associated with conventional photosensitive reagents.

光响应嵌段共聚物的光激活胶束由于具有精确的时空控制和非侵入性等优点，在可控给药系统中得到了广泛的应用。然而，它们的实际应用往往受到限制，因为可聚合光敏单体的商业不可获得性和合成难度高，整合强大的血液循环能力面临严峻挑战，传统光敏o-硝基苯和偶氮苯分子的代谢物具有高毒性。本文合成了一种携带甲基丙烯酰的可聚合光酸发生剂（MAPDST），并以MAPDST为单体，在亲水性PEGlyated宏观RAFT试剂存在下，与酸可切割单体（TTMA） RAFT共聚制备了两亲性光响应嵌段共聚物（PPMT）。表征了PPMT及其光响应胶束（PPMT NPs）的结构和物理化学特性。结果表明，PPMT NPs不仅具有较高的储存稳定性和血液循环稳定性以及良好的生物相容性，而且在紫外线照射下可以快速产生质子，从而产生强酸性，导致酸可切割的TTMA片段被水解而显着膨胀和分解，从而实现光开关药物释放特性。该研究表明，光酸和酸可切割基团在聚合物中的协同整合可以提供一种简单而有前途的策略，通过光触发级联反应赋予酸敏感聚合物和相应的纳米载体理想的光响应性。显然，考虑到各种酸敏基团，这种新策略可以扩大光响应聚合物材料的衬底范围，并提供替代方案来开发光敏材料，而不受传统光敏试剂的限制。

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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 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2026-01-02 DOI: 10.1016/j.eurpolymj.2025.114491

Yuya Kaneko, Aohan Wang

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⁻ chelate structure in FT-IR spectra, and potassium was detected in XPS spectra.

以香豆素为基础的π共轭聚合物具有良好的溶解度和可逆的荧光随酸碱变化。通过细致的分子设计，我们合成了两个新的二溴香豆素单体：3,7-二溴-4-甲基-8-辛基氧基香豆素和3,6-二溴-7,8-二辛基氧基-4-甲基香豆素。通过将烷氧侧链而不是香豆素主链的α-吡酮环引入苯环中，我们在聚合物主链中实现了特殊的开环和闭环性能。所得到的香豆素聚合物具有高分子量和可逆的开/关荧光。此外，利用香豆素基模型化合物研究了烷氧侧链位置对开环和闭环性能的影响。我们的研究涉及到在C4位置具有甲基、甲氧基和辛氧基基团的模型的合成，以及在C8位置的辛氧基链。结果表明，烷氧基链的位置直接影响香豆素单元的开环和闭环机理。此外，还考察了开环香豆素聚合物在碱性和酸性状态下的化学结构。在开环形式中，我们发现在FT-IR光谱中，内酯环上的C=O双键转变为COO -螯合结构，并且在XPS光谱中检测到钾。

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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 Q1 POLYMER SCIENCE

European Polymer Journal

Pub 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

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)₂. 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.

脂肪族聚碳酸酯的生物可降解性和生物相容性引起了广泛的关注，但也存在影响其应用的局限性，通常需要通过后修饰进一步优化。重氮化合物羰基聚合是对脂肪族聚碳酸酯进行进一步改性的一种替代方法，由于其合成高功能化聚合物的独特优势。在这项工作中，通过Sn(Oct)2催化的“先加入环单体，然后再加入重氮乙酸酯”的后加成策略，实现了环碳酸盐与重氮乙酸酯的共聚。值得注意的是，尽管缺乏传统上已知的共轭荧光发色团，所得到的非常规环碳酸酯-重氮乙酸共聚物仍表现出新的荧光特性。此外，它的热稳定性也可以通过改变单体，或改变两种单体的投料比，或调节共聚物的分子量等多种途径来方便地调节。

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引用次数: 0

A review on regulating the mechanical properties and phase transition temperature of UCST hydrogels UCST水凝胶力学性能和相变温度的调控研究进展

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2025-12-31 DOI: 10.1016/j.eurpolymj.2025.114482

Mengqi Chen , Rong Liu , Yongyi Yang , Qihao Bai , Li Xie , Huang Zhu

Hydrogels formed by polymers with upper critical solution temperature (UCST) exhibit delicate thermos- responsiveness, being highly susceptible to subtle variations in chain structures and environmental conditions, which are particularly suitable for precision-demanding applications. This unique characteristic has consequently garnered significant interdisciplinary research attention in recent years. UCST hydrogels exhibit the advantageous property of tunable phase transition temperatures, however, their practical applications are often constrained by inadequate mechanical strength. Here, this review systematically explores the mechanical property and phase transition temperature modulation strategies, as well as underlying regulatory mechanisms of UCST hydrogels, while critically assessing their emerging commercial applications. Through this comprehensive analysis, we aim to advance the rational design of UCST-based hydrogel systems and thereby facilitate their commercial transformation.

由具有较高临界溶液温度（UCST）的聚合物形成的水凝胶表现出微妙的热响应性，极易受到链结构和环境条件的细微变化的影响，特别适用于精度要求高的应用。近年来，这一独特的特征引起了跨学科研究的广泛关注。UCST水凝胶具有相变温度可调的优点，但其实际应用往往受到机械强度不足的限制。本文系统地探讨了UCST水凝胶的力学性能、相变温度调节策略以及潜在的调节机制，同时对其新兴的商业应用进行了批判性评估。通过这一综合分析，我们旨在推动基于ucst的水凝胶体系的合理设计，从而促进其商业转化。

引用次数: 0

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 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2025-12-30 DOI: 10.1016/j.eurpolymj.2025.114455

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

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.

厄洛替尼治疗非小细胞肺癌受溶解度差和缺乏靶向递送的限制，导致全身不良反应。为了解决这个问题，研究人员利用丝胶接枝六铁体锶/石墨烯量子点功能化的pH和热响应聚合物，开发了一种新型的近红外（NIR）光触发纳米平台。利用响应面法优化了药物吸附过程，Langmuir等温线和拟二阶动力学模型证实了药物在均匀表面上的单层吸附。在高温酸性条件下，该体系的erlotinib控释量为63.10%，符合Korsmeyer-Peppas模型，为非菲克扩散机制。该平台的重要意义在于其对外部刺激的显著反应，在近红外激光照射45分钟后达到100%的药物释放率。这种按需能力转化为强大的生物效应，而空白纳米载体无细胞毒性，负载埃洛替尼的纳米复合材料在A549肺癌细胞中诱导了显著的细胞死亡，流式细胞术证实凋亡/坏死率为7.07%。新型纳米复合材料的生物相容性已通过血小板粘附、溶血试验和部分凝血活酶时间试验得到广泛验证。这项研究提出了一种非常有前途的刺激响应策略，用于精确和有效地递送厄洛替尼。

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引用次数: 0

Corrigendum to “Overcoming the PEG dilemma with Poly(2-ethyl-2-oxazoline) lipids in lipid nanoparticle formulations”. [Eur. Polym. J. 241 (2025) 114392] “在脂质纳米颗粒配方中克服聚乙二醇困境（2-乙基-2-恶唑啉）脂质”的勘误表。(欧元。变异较大。J. 241 (2025) 114392]

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2025-12-30 DOI: 10.1016/j.eurpolymj.2025.114467

Randall W. Moreadith, Wookhyun Kim, Kelley Smith, Kunsang Yoon, Rebecca Weimer, Zhihao Fang

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 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2025-12-30 DOI: 10.1016/j.eurpolymj.2025.114479

Baoyun Cao, Chuanzheng Ren, Jianjun Bao

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.

传统的光固化聚氨酯具有永久交联的网络，阻碍了可回收性，从而引起了重大的环境问题。在这项工作中，提出了一种一般的分子策略，通过将动态共价键结合到预聚体和交联剂域中来赋予光固化系统动态可逆性。利用甲基丙烯酸叔丁基氨基乙酯（TBEMA）构建动态脲基交联剂（HTB）和端盖聚氨酯预聚物，确保系统内的化学相容性。通过将这些成分与柔性（CTFA）或刚性（IBMA）活性稀释剂相结合，开发出一系列适合数字光处理（DLP）的紫外光固化配方。固化后的柔性树脂和刚性树脂的抗拉强度分别约为12兆帕和45兆帕以上，同时具有优异的打印保真度。流变学分析表明，网络内部存在一个持续的长松弛过程，这从根本上决定了网络的热力学行为，并直接指导了热压作为最佳再加工技术的选择。利用这种动态特性，通过热压成功地对交联网络进行了再加工。此外，建立了一条实用的混合聚氨酯废物回收路线，将再加工树脂与原始热塑性聚氨酯（TPU）共混，获得了具有良好机械完整性的均质复合材料。该研究为可回收热固性树脂提供了一个通用的分子设计范例，并有助于推进光固化3D打印材料的可持续性。

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引用次数: 0

Optimization of intermolecular interactions in poly(propylene 2,4-furanoate) copolymers: an ecodesign case study towards high-performance, biobased, biodegradable food packaging 聚（2,4-呋喃酸丙烯）共聚物分子间相互作用的优化：面向高性能、生物基、可生物降解食品包装的生态设计案例研究

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2025-12-30 DOI: 10.1016/j.eurpolymj.2025.114480

Enrico Bianchi , Michelina Soccio , Valentina Siracusa , Shanmugam Thiyagarajan , Nadia Lotti

Biobased 2,4-furandicarboxylic acid (2,4-FDCA), a structural isomer of 2,5-FDCA, has recently led to the synthesis of high molecular weight polyesters with promising properties for food packaging. Among them, poly(propylene 2,4-furanoate) (2,4-PPF), the only polymer in the glassy state at room temperature, showed limited functional performance, attributed to its reduced macromolecular mobility. To address this, 2,4-PPF was copolymerized with biobased poly(propylene succinate) (PPS) via reactive blending, aiming to optimize T_g and chain flexibility. A physical blend, block and random copolymers were processed into freestanding films and thoroughly characterized (NMR, GPC, WAXD, DSC, TGA, tensile and gas permeability tests). Block and random copolymers showed excellent mechanical properties, including elongation at break exceeding 2400%, and outstanding gas barrier, competitive with commercial poly(ethylene vinyl alcohol). These enhancements are attributed to the predicted enhancement intermolecular interactions caused by the T_g close to room temperature, which increased chain mobility, thus optimized interchain hydrogen bonding and π–π interactions. Biodegradation under composting conditions was also assessed. Gravimetric, NMR, GPC, DSC, and WAXD analyses revealed preferential degradation of PPS segments and significant molecular weight reduction in the copolymers. Overall, our results demonstrate the potential of copolymers based on 2,4-PPF as biobased, flexible, monolayer and partially biodegradable materials for sustainable food packaging. Most importantly, this work highlights the critical importance of intermolecular interactions as a tool for the ecodesign of furan-based polymers, to unlock higher levels of functional and sustainable performance.

生物基2,4-呋喃二羧酸（2,4- fdca）是2,5- fdca的一种结构异构体，近年来合成了具有良好食品包装性能的高分子量聚酯。其中，聚（2,4-呋喃酸丙烯）（2,4- ppf）是唯一在室温下处于玻璃态的聚合物，由于其大分子迁移率降低，其功能性能有限。为了解决这个问题，2,4- ppf通过反应共混与生物基聚琥珀酸丙烯（PPS）共聚，旨在优化Tg和链的柔韧性。将物理共混、嵌段和无规共聚物加工成独立薄膜，并进行全面表征（NMR、GPC、WAXD、DSC、TGA、拉伸和透气性测试）。嵌段共聚物和无规共聚物表现出优异的力学性能，断裂伸长率超过2400%，具有优异的气体阻隔性，可与商业聚乙烯醇相媲美。这些增强是由于Tg在接近室温时引起的分子间相互作用增强，从而提高了链的迁移率，从而优化了链间氢键和π -π相互作用。并对堆肥条件下的生物降解进行了评价。重量、核磁共振、GPC、DSC和WAXD分析显示PPS片段优先降解，共聚物的分子量显著降低。总的来说，我们的研究结果证明了基于2,4- ppf的共聚物作为生物基、柔性、单层和部分可生物降解的可持续食品包装材料的潜力。最重要的是，这项工作强调了分子间相互作用作为呋喃基聚合物生态设计工具的重要性，以解锁更高水平的功能和可持续性能。

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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 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2025-12-30 DOI: 10.1016/j.eurpolymj.2025.114481

Shengqiang Wang , Zhiyao Qiao , Yier Zhao , Yong Zhang

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 β-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 ¹H 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.

如何开发出机械强度高、可循环利用的有机硅弹性体一直是高分子领域面临的挑战。合成了以氢键和芳二硫键为双动力键的聚硅氧烷-聚氨酯弹性体。采用阴离子开环聚合法制备端乙烯基聚二甲基硅氧烷（PDMS），经β-巯基乙醇通过巯基咔嗒反应引入羟基，改性后的PDMS与双环己基甲烷-4,4 ' -二异氰酸酯和双（4-羟基苯基）二硫化物混合，制得PDMS- pu弹性体。为了进一步提高PDMS- pu弹性体的力学性能，引入端羟基聚丁二烯（HTPB）部分取代改性PDMS作为二级软段，得到PB改性PDMS- pu弹性体。1H NMR和FTIR光谱验证了所有弹性体都成功地结合了双动态键。DSC曲线验证了软段区域存在两相，分别对应PDMS和PB两种组分。XRD和SAXS曲线验证了HTPB的部分取代促进了微畴的细化。所有弹性体具有良好的力学性能，抗拉强度在6.6 ~ 12.2 MPa之间，断裂伸长率在354% ~ 455%之间。此外，所有弹性体都表现出优异的热压再加工性能，由于多个动态键，在三次循环后，拉伸强度保持在6 MPa以上，断裂伸长率保持在300%左右。坚固性、韧性和可回收性的整合使这些聚硅氧烷-聚氨酯弹性体成为在低温环境下运行的可持续柔性设备的有希望的候选者。

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引用次数: 0

Regulating sustainable Poly(butylene terephthalate) copolyesters toward elastomer from thermoplastic by introducing biobased dilinoleic diol comonomer 通过引入生物基二亚油酸二醇共聚物，调控可持续发展的聚对苯二甲酸丁二酯共聚酯从热塑性塑料向弹性体的转变

IF 6.3 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal

Pub Date : 2025-12-30 DOI: 10.1016/j.eurpolymj.2025.114478

Qingxi Wang, Lizheng Wang, Minglong Li, Jiaming Liang, Zhiyong Wei

The utilization of bio-based materials constitutes a crucial strategy for reducing carbon emissions. Among them, biomass-derived dilinoleic diol (DD) has substantial potential in elastomer research due to its abundant availability and favorable monomeric properties. In this study, a series of poly(butylene terephthalate) (PBT) copolymers containing multiple soft segments was synthesized via a two-step melt-polycondensation method using terephthalic acid (PTA), 1,4-butanediol (1,4-BDO), and DD as raw materials. The resulting structure consists of a soft segment (DT) derived from DD and PTA, and a hard segment based on butylene terephthalate (BT). By modulating the hard-to-soft segment ratio (0 to 75.2 mol%, 0 to 90.2 wt%), the properties of the material can be tuned from those of a tough thermoplastic to those of a flexible elastomer. To gain deeper insight, a series of detailed investigations was conducted on the thermal, crystallization, mechanical, and rheological properties of the materials. The results show that with the continuous introduction of DD, the elongation at break of the materials increased from 200 % to 3500 %, which corresponds to a 17.5-fold increase. Meanwhile, the elasticity of the materials was continuously enhanced, with the final elastic recovery rate reaching 90.0 %. The experimental scale was expanded to a 2 L reactor to explore industrial-scale production. Additionally, the 3D printing capability of these materials was explored in an effort to broaden their application fields. The results showed that it possesses broad application prospects in the field of fused deposition modeling (FDM) 3D printing technology.

生物基材料的利用是减少碳排放的关键战略。其中，生物质衍生的二亚油酸二醇（DD）由于其丰富的可用性和良好的单体性能，在弹性体研究中具有很大的潜力。本研究以对苯二甲酸（PTA）、1,4-丁二醇（1,4- bdo）和DD为原料，采用两步熔融缩聚法制备了一系列含有多个软段的聚对苯二甲酸丁二醇（PBT）共聚物。所得结构包括由DD和PTA衍生的软段（DT）和基于对苯二甲酸丁二酯（BT）的硬段。通过调节硬-软段比（0 - 75.2 mol%, 0 - 90.2 wt%），材料的性能可以从坚硬的热塑性塑料调整为柔性弹性体。为了获得更深入的了解，对材料的热、结晶、机械和流变特性进行了一系列详细的研究。结果表明，随着DD的不断加入，材料的断裂伸长率从200%提高到3500%，提高了17.5倍。同时，材料的弹性不断增强，最终弹性回复率达到90%。实验规模扩大到2升反应器，以探索工业规模的生产。此外，还对这些材料的3D打印能力进行了探索，以拓宽其应用领域。结果表明，该方法在熔融沉积建模（FDM） 3D打印技术领域具有广阔的应用前景。

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引用次数: 0