Reactive & Functional Polymers最新文献_第8页

Nitrogen-doped quantum dots synthesized from polyethylene terephthalate waste: Advancing barrier properties of polyvinyl alcohol for sustainable packaging 由聚对苯二甲酸乙二醇酯废料合成的氮掺杂量子点：推进聚乙烯醇在可持续包装中的阻隔性能

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-11-17 DOI: 10.1016/j.reactfunctpolym.2025.106564

Jamilur R. Ansari , Hyunjin Kim , Kitae Park , Kambiz Sadeghi , Jongchul Seo

Nitrogen-doped polymeric quantum dots (NPQDs) were synthesized through a one-step hydrothermal conversion of polyethylene terephthalate (PET) waste using ethylenediamine as a nitrogen source and subsequently incorporated into poly(vinyl alcohol) (PVA) matrices to fabricate nano-reinforced composite films. The effect of NPQD loading (0.1–0.7 wt%) on the structural, optical, and barrier properties of PVA was systematically examined. Transmission electron microscopy (TEM) revealed uniformly dispersed, quasi-spherical NPQDs with diameters ranging from 2 to 6 nm, while photoluminescence (PL) spectra exhibited pronounced quantum-confinement characteristics. X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analyses indicated enhanced crystallinity of the PVA matrix, attributed to strong interfacial interactions and hydrogen bonding between the NPQDs and polymer chains. The incorporation of NPQDs led to remarkable improvements in material performance, with crystallinity increasing by 17.4 % and tensile strength enhancing by 89.1 % relative to neat PVA. Moreover, at 0.7 wt% NPQD loading, the oxygen transmission rate (OTR) decreased by 99.8 %, demonstrating exceptional gas-barrier capability. Simultaneously, the films exhibited significantly improved UV-shielding efficiency while maintaining high visible transparency (>99.7 %). These enhancements arise from the synergistic effects of nanoscale confinement, interfacial interactions, and induced polymer chain ordering. This research highlights a sustainable methodology for valorizing PET waste into high-performance nanomaterials, converting PET into high-performance nanofillers to produce optically transparent, UV-protective, and gas-impermeable PVA nanocomposite films suitable for next-generation eco-friendly packaging applications.

以聚对苯二甲酸乙二醇酯（PET）废料为原料，以乙二胺为氮源，通过一步水热转化法制备了氮掺杂聚合物量子点（NPQDs），并将其掺入聚乙烯醇（PVA）基体中制备纳米增强复合薄膜。系统地研究了NPQD负载（0.1-0.7 wt%）对PVA结构、光学和阻挡性能的影响。透射电子显微镜（TEM）显示出均匀分散的准球形NPQDs，直径在2 ~ 6 nm之间，而光致发光（PL）光谱显示出明显的量子限制特征。x射线衍射（XRD）和差示扫描量热法（DSC）分析表明，NPQDs与聚合物链之间的强界面相互作用和氢键增强了PVA基体的结晶度。与纯PVA相比，NPQDs的加入使材料的结晶度提高了17.4%，抗拉强度提高了89.1%。此外，当NPQD负载为0.7 wt%时，氧透过率（OTR）降低了99.8%，显示出卓越的阻气能力。同时，薄膜在保持较高的可见光透明度（> 99.7%）的同时，显著提高了紫外线屏蔽效率。这些增强来自于纳米级约束、界面相互作用和诱导聚合物链排序的协同效应。这项研究强调了一种可持续的方法，将PET废物转化为高性能纳米材料，将PET转化为高性能纳米填料，以生产适合下一代环保包装应用的光学透明、防紫外线和不透气的PVA纳米复合薄膜。

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引用次数: 0

A pH-responsive hydrogel formed by chitosan and protocatechualdehyde via Schiff base for antioxidant and antibacterial application 壳聚糖与原儿茶醛经席夫碱形成的ph响应型水凝胶，具有抗氧化和抗菌作用

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-11-17 DOI: 10.1016/j.reactfunctpolym.2025.106561

Tongtong Zhang, Yawei Chen, Yiting Cao, Jindie Yuan, Xianjun Tang, Huiyun Zhou

To address the global challenge of antibiotic overuse, alternative strategies including inorganic nanoparticles, photothermal therapy, and photodynamic therapy have been developed in recent years. However, their clinical translation has been hindered by complicated manufacturing processes and high production costs. This study successfully developed a pH-responsive chitosan-based hydrogel via an environmentally friendly Schiff base reaction, leveraging the dual inherent antibacterial and antioxidant properties of both chitosan (CS) and protocatechualdehyde (PA). The chitosan-protocatechualdehyde (CS-PA) hydrogel exhibited superior swelling capacity, excellent injectability, and potent antioxidant and antibacterial activities. Antibacterial experiments demonstrated that the CS-PA hydrogel significantly inhibited the growth of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), with the CS-PA200 hydrogel achieving complete inhibition of both bacteria within 24 h. These results establish the CS-PA hydrogel as a clinically promising, antibiotic-free platform for combating drug-resistant infections while promoting wound regeneration.

为了解决抗生素过度使用的全球性挑战，近年来发展了包括无机纳米颗粒、光热疗法和光动力疗法在内的替代策略。然而，它们的临床转化一直受到复杂的制造工艺和高生产成本的阻碍。本研究利用壳聚糖（CS）和原儿茶醛（PA）的抗菌和抗氧化双重特性，通过环境友好的希夫碱反应成功制备了ph响应型壳聚糖水凝胶。壳聚糖-原儿茶醛（CS-PA）水凝胶具有良好的溶胀性、注射性和抗氧化、抗菌活性。抗菌实验表明，CS-PA水凝胶可显著抑制大肠杆菌（E. coli）和金黄色葡萄球菌（S. aureus）的生长，其中CS-PA200水凝胶可在24 h内完全抑制这两种细菌。这些结果表明CS-PA水凝胶是一种具有临床前景的无抗生素平台，可用于对抗耐药感染，同时促进伤口再生。

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引用次数: 0

A robustly adhesive hydrogel with enhanced osteogenic properties for cartilage defect repair 一种具有增强成骨特性的强粘合水凝胶，用于软骨缺损修复

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-11-17 DOI: 10.1016/j.reactfunctpolym.2025.106559

Lei Chen , Jieyu Zhang , Bo Zhang , Xuhao Zhu , Yubo Xiao , Kang Zhao , Yufei Tang , Zixiang Wu , Quanchang Tan

Cartilage defects are a common joint disorder. Current hydrogels used for cartilage repair and bone regeneration at defect sites suffer from inadequate adhesive properties and inferior mechanical performance in the early repair stage. Additionally, a lack of bioactive ion supply in the later stage impairs new bone formation. To address these issues, β-TCP/BN/P(AM-PEG) (TBPAP) hydrogels with BN serving as the bridging structures were synthesized by in situ growth of P(AM-PEG) on the β-TCP and BN via ionic cross-linking. A key innovation lies in the exceptional adhesive properties of TBPAP, synergistically achieving through covalent bonding, ionic interactions, and electrostatic adsorption. Specifically, the interfacial adhesive strength between TBPAP and bone sheets reached a remarkable 1.59 ± 0.04 MPa, which is significantly higher than that of many existing hydrogels. Meanwhile, the bridging-structured BN and coordinate bond formation between β-TCP and the hydrogel enhanced its compressive properties. Another innovation of TBPAP hydrogel is the precise quantification of its expansion stress, which ranged between 0.15 MPa and 0.24 MPa. Cell pressurization cultures revealed that an expansion stress of 0.21 MPa optimally promoted osteoblast adhesion, proliferation, and early differentiation. Furthermore, TBPAP enabled sustained release of calcium ions through ionic cross-linking and electrostatic attraction. These findings demonstrate that TBPAP effectively overcomes the limitations of current hydrogels, showing significant potential for clinical applications in cartilage repair and bone regeneration.

软骨缺损是一种常见的关节疾病。目前用于缺损部位软骨修复和骨再生的水凝胶在早期修复阶段粘接性能不足，力学性能较差。此外，后期缺乏生物活性离子供应会损害新骨的形成。为了解决这些问题，通过离子交联在β-TCP和BN上原位生长P(AM-PEG)，合成了以BN为桥接结构的β-TCP/BN/P(AM-PEG) （TBPAP）水凝胶。一个关键的创新在于TBPAP的特殊粘合性能，通过共价键、离子相互作用和静电吸附协同实现。其中，TBPAP与骨片之间的界面粘接强度达到了1.59±0.04 MPa，显著高于现有的许多水凝胶。同时，桥接结构的BN和β-TCP与水凝胶之间的配位键形成增强了其抗压性能。TBPAP水凝胶的另一个创新之处在于其膨胀应力的精确量化，范围在0.15 MPa到0.24 MPa之间。细胞加压培养显示，0.21 MPa的扩张应力最有利于促进成骨细胞的粘附、增殖和早期分化。此外，TBPAP通过离子交联和静电吸引使钙离子持续释放。这些发现表明TBPAP有效地克服了现有水凝胶的局限性，在软骨修复和骨再生方面具有重要的临床应用潜力。

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引用次数: 0

Triple shape memory and shrinkage-resistant Eucommia Ulmoides gum/polyethylene smart foam blends 三重形状记忆和抗收缩杜仲胶/聚乙烯智能泡沫混合物

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-11-14 DOI: 10.1016/j.reactfunctpolym.2025.106553

Zhongtian Li, Yuan Lyu, Wuchao Cheng, Jieting Geng, Lin Xia

Foamed rubber materials play a vital role in industrial applications, but their utility is significantly limited by thermal shrinkage at elevated temperatures. Addressing this critical challenge, our study pioneers a novel chemical foaming strategy to engineer Eucommia ulmoides gum (EUG) and polyethylene (PE) foamed blends with integrated shrinkage resistance and triple-shape memory properties. The present investigation demonstrates how polyethylene content influences foaming morphology, vulcanization kinetics, and functional properties of blends. Notably, the EUG/P₂₀ blend demonstrates 85 % shrinkage resistance at 60 °C, significantly outperforming conventional foamed rubbers in thermal stability. To our knowledge, this study represents the first systematic investigation into shrinkage-resistant EUG-based foams, establishing a novel paradigm for developing anti-shrinkage elastomers through polymer blending strategies. The designed EUG/PE foamed blends show promising potential for oilfield applications, particularly as downhole filtration materials where thermal stability and shape adaptability are critical performance metrics.

泡沫橡胶材料在工业应用中起着至关重要的作用，但其效用受到高温热收缩的显著限制。为了解决这一关键挑战，我们的研究开创了一种新的化学发泡策略，设计杜仲胶（EUG）和聚乙烯（PE）泡沫共混物，具有综合抗收缩和三形状记忆性能。本研究展示了聚乙烯含量如何影响共混物的发泡形态、硫化动力学和功能特性。值得注意的是，EUG/P20共混物在60°C时具有85%的抗缩性，在热稳定性方面明显优于传统发泡橡胶。据我们所知，这项研究代表了对抗收缩eug基泡沫材料的首次系统研究，为通过聚合物共混策略开发抗收缩弹性体建立了一个新的范例。设计的EUG/PE泡沫共混物在油田应用中具有很大的潜力，特别是作为井下过滤材料，热稳定性和形状适应性是关键的性能指标。

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引用次数: 0

Efficient fluoride removal by strong-base anion exchanger loaded with yttrium phosphate nanoparticles 负载磷酸钇纳米颗粒的强碱阴离子交换剂高效除氟

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-11-14 DOI: 10.1016/j.reactfunctpolym.2025.106557

Ruijie Wang, Yingpeng Gu, Mengfei Ma, Yue Sun

Currently, various techniques are efficient in eliminating high quantities of fluoride from water, while the deep treatment of low concentration of fluoridated water is inadequate. In this research, a novel adsorbent, YP-D213, was synthesized by loading yttrium phosphate nanoparticles into a macroporous polyacrylic acid-based strongly basic anion exchange resin D213, to improve the removal of fluoride from low-concentration fluoridated water. YP-D213 exhibited prominent adsorption capacity in neutral water and demonstrated excellent selectivity in the presence of coexisting anions and organics. YP-D213 can reach adsorption equilibrium within 220 min, and the pseudo-first model was more suitable for its adsorption kinetics, while the maximum adsorption capacity obtained by Langmuir well-fitting was 49.88 mg/g. The ligand exchange effect between yttrium phosphate particles and fluoride was further confirmed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy, and adsorption mechanism tests suggested that a synergistic effect existed between -N⁺(CH₃)₃ on D213 and yttrium phosphate particles. Fixed-bed column experiments suggested that the treatment volume of YP-D213 was nine times higher than that of D213 for actual wastewater (around 7.0 mg F⁻/L), and the exhausted adsorbent was effectively regenerated using the NaOH-NaCl eluate. YP-D213 has great potential for deep fluoride adsorption.

目前，各种技术都能有效地去除水中大量的氟化物，而对低浓度的氟化水进行深度处理是不够的。本研究通过在大孔聚丙烯酸基强碱性阴离子交换树脂D213中负载磷酸钇纳米颗粒，合成了一种新型吸附剂YP-D213，以提高对低浓度氟化水中氟的去除效果。YP-D213在中性水中表现出优异的吸附能力，在阴离子和有机物共存的情况下表现出优异的选择性。YP-D213在220 min内达到吸附平衡，拟第一吸附模型更适合其吸附动力学，Langmuir拟合得到的最大吸附量为49.88 mg/g。傅里叶变换红外光谱和x射线光电子能谱进一步证实了磷酸钇颗粒与氟化物之间的配体交换作用，吸附机理测试表明-N+(CH3)3对D213与磷酸钇颗粒之间存在协同作用。固定床柱实验表明，YP-D213对实际废水的处理量（约7.0 mg F−/L）是D213的9倍，并且用NaOH-NaCl洗脱液可以有效地再生废吸附剂。YP-D213具有很大的深度氟吸附潜力。

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引用次数: 0

Synthesis and evaluation of thiazolium-functionalized biobased copolymers with antioxidant and antimicrobial bioactive properties 具有抗氧化和抗菌活性的噻唑功能化生物基共聚物的合成与评价

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-11-12 DOI: 10.1016/j.reactfunctpolym.2025.106554

Alejandro Funes , Alexandra Muñoz-Bonilla , Marta Fernández-García

Herein, we report the synthesis of a series of copolymers based on methacrylic and itaconate monomers functionalized with triazolium and thiazolium groups and the evaluation of their bioactive properties and cytotoxicity. The copolymers were obtained from biobased monomers, one an itaconate derivative with alkyne groups (PrI) and the other one a methacrylic monomer enzymatically synthesized from vinyl methacrylate and a thiazole derived from vitamin B1 (MTA). Throughout a combination of radical polymerization, click chemistry and alkylation reaction, five copolymers were obtained by varying the positive charge density and the distribution of the charge along the structure. The copolymers exhibit high zeta potential values between +39 and + 76 mV, even the copolymers with low charge density due to the aggregation of the chains in aqueous solutions and the rearrangement of the charges at the surface. The neutrally charged copolymers, before incorporating the positive charges, presented moderate antioxidant activity that slightly increases by the augment of the number of thiazole units. Nevertheless, clear enhancement of the scavenging capacity was observed when the positive charge was incorporated by alkylation reaction. These positive charges also provide excellent antibacterial activity against Gram-positive and Gram-negative bacteria, in particular the copolymer having hydrophobic alkyne groups, with MIC values between 62 and 8 μg/mL. Also, the copolymers exhibited relatively low human cell toxicity, yielding high selectivity, which made these polymers highly desirable for effectively preventing bacterial infections.

本文报道了以三唑和噻唑基团为官能团的甲基丙烯酸酯和衣康酸酯单体为共聚物的合成，并对其生物活性和细胞毒性进行了评价。这两种共聚物是由生物基单体合成的，一种是带炔基的衣康酸衍生物（PrI），另一种是由甲基丙烯酸乙烯酯和维生素B1衍生的噻唑（MTA）酶促合成的甲基丙烯酸单体。通过自由基聚合、点击化学和烷基化反应的结合，通过改变正电荷密度和电荷沿结构的分布，得到了五种共聚物。该共聚物在+39 ~ + 76 mV之间表现出较高的zeta电位值，即使是由于水溶液中链的聚集和表面电荷的重排而具有低电荷密度的共聚物。中性带电荷的共聚物，在加入正电荷之前，表现出适度的抗氧化活性，并随着噻唑单元数量的增加而略有增加。然而，当正电荷通过烷基化反应加入时，清除能力明显增强。这些正电荷还对革兰氏阳性和革兰氏阴性细菌具有良好的抗菌活性，特别是具有疏水性炔基的共聚物，其MIC值在62至8 μg/mL之间。此外，共聚物表现出相对较低的人体细胞毒性，产生高选择性，这使得这些聚合物非常理想，有效地防止细菌感染。

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引用次数: 0

Results of pre-flight tests of a novel cyanate ester laminate before exposure to low earth orbit 一种新型氰酸酯层压板在近地轨道暴露前的飞行前试验结果

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-11-12 DOI: 10.1016/j.reactfunctpolym.2025.106555

Mayra Y. Rivera Lopez , Joseph F. Gargiuli , Katharine Robson Brown , Agnieszka Suliga , Sebastien Vincent-Bonnieu , Fabrizio Scarpa , Ian Hamerton

A novel patented cyanate ester (CE) resin, developed at the University of Bristol was selected for study in the Euro Materials Ageing 1 campaign (AO-2020-EMA, European Space Agency/CNES). Cyanate esters offer an attractive combination of low dielectric constant, coupled with high glass transition temperature and this example, incorporating silicon to enhance resistance to atomic oxygen in the space environment, displays ease of processing. A carbon fibre reinforced polymer (CFRP) sample has been flown to the International Space Station (ISS) and is now being exposed on the Bartolomeo platform of the ISS for a period of 12 months. The flexural properties of 2.4-mm thick CFRP specimens were tested according to ASTM D790–10 and the flexural modulus was determined to be 68.81 (σ = 2.18) GPa. A sample of the laminate (25 mm × 25 mm × 2.44 mm) was machined with a shallow V shaped groove and subjected to a standard thermal outgassing test (ECSS-Q-ST-70-02C) which involved exposure to a vacuum pressure below 10⁻⁵ mbar and a temperature of 125 °C for 24 h. The CE CFRP laminate lost a total of 0.53 % of its mass (the recovery mass loss was 0.15 %) and 0.01 % of the mass was collected as volatile material (subsequently identified as a polydimethylsiloxane). The CFRP sample was characterized by acquiring the UV–Vis-NIR reflection spectra from 200 to 2500 nm and by measuring the solar absorptance (α) and thermal emittance (ε). The reflectance for the CFRP sample increased from 0.105 (measured at 1500 nm) to 0.135, but the (α/ ε) ratio remained unchanged. When exposed to atomic oxygen (a flux of 3.43 × 10¹⁵ atoms/cm².s) the CFRP sample lost a mass of 13.863 mg (i.e. an erosion yield of 4 × 10⁻²⁴ cm³/atom) after an ATOX fluence of 1.20 × 10²¹ atoms/cm². The CE CFRP sample passed its pre-flight tests and the samples are now undergoing exposure in low Earth orbit.

布里斯托尔大学开发的一种新型专利氰酸酯（CE）树脂被选中用于欧洲材料老化1运动（AO-2020-EMA，欧洲航天局/CNES）的研究。氰酸酯提供了低介电常数的有吸引力的组合，再加上高玻璃化转变温度，本例中，结合硅来增强太空环境中对原子氧的抵抗力，显示易于加工。一种碳纤维增强聚合物（CFRP）样品已被送往国际空间站（ISS），目前正在国际空间站的Bartolomeo平台上进行为期12个月的暴露。根据ASTM D790-10测试了2.4 mm厚CFRP试件的抗弯性能，确定其抗弯模量为68.81 (σ = 2.18) GPa。样本的层压板(25毫米×25毫米×2.44毫米)加工浅V形槽和接受标准的热释气试验(ecs - q -圣- 70 - 02 - C)涉及暴露在真空压力低于10−5 mbar和125°C的温度24 h。CE碳纤维增强塑料层压板失去了0.53%的总质量(复苏质量损失为0.15%)和0.01%的质量是收集挥发性物质(随后确认为聚二甲硅氧烷)。测定了CFRP样品在200 ~ 2500 nm范围内的紫外-可见-近红外反射光谱，太阳吸收率（α）和热发射率（ε）。CFRP样品的反射率从0.105 （1500 nm）增加到0.135，但（α/ ε）比值保持不变。当暴露于原子氧时（通量为3.43 × 1015原子/cm2）。5)在ATOX浓度为1.20 × 1021原子/cm2后，CFRP样品的质量损失为13.863 mg（即侵蚀量为4 × 10−24 cm3/原子）。CE CFRP样品通过了飞行前测试，目前正在近地轨道上进行曝晒。

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引用次数: 0

Polymer microgels loaded with non-spherical metal nanoparticles, A review 非球形金属纳米颗粒聚合物微凝胶的研究进展

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-11-10 DOI: 10.1016/j.reactfunctpolym.2025.106550

Ahmad Hassan , Iqra Sajid , Sonia Sadaf , Robina Begum , Rahul Das , Shuiqin Zhou , Ahmad Irfan , Zahoor H. Farooqi

Microgels loaded with non-spherical metal nanoparticles have received much consideration in recent research attributed to their versatile and interesting properties, applications, and superiority over microgels having spherical metal nanoparticles, as they have greater surface area, improved cellular uptake, and unique optical and magnetic properties. This article deals with classification, synthesis strategies, properties, analysis and employment of microgels loaded with non-spherical metal nanoparticles. With small changes in any of the outer stimuli as glucose concentration, temperature, and pH of the medium, these hybrid microgels manifest quick swelling/deswelling reversibly. They are called smart hybrid microgels. This noteworthy potential makes them a suitable applicant for uses in catalysis, drug delivery, dye release, and sensing. This review presents current advancements, coupled with suggestions and proposed future inquiries for enhanced progress in this particular research domain.

装载非球形金属纳米颗粒的微凝胶在最近的研究中受到了很多关注，因为它们具有多用途和有趣的性质，应用，以及比带有球形金属纳米颗粒的微凝胶具有更大的表面积，更好的细胞摄取，以及独特的光学和磁性能。本文介绍了载非球形金属纳米颗粒微凝胶的分类、合成策略、性能、分析和应用。随着外界刺激如葡萄糖浓度、温度和培养基pH值的微小变化，这些杂交微凝胶表现出快速可逆的肿胀/溶胀。它们被称为智能混合微凝胶。这种值得注意的潜力使它们成为催化、药物递送、染料释放和传感等领域的合适应用。这篇综述介绍了当前的进展，并提出了在这一特定研究领域加强进展的建议和提出的未来调查。

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引用次数: 0

Silane-grafted black phosphorus nanosheets via ball milling: Simultaneously enhanced flame retardancy and mechanical properties in polyurea composites 球磨硅烷接枝黑磷纳米片：同时增强聚脲复合材料的阻燃性和力学性能

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-11-10 DOI: 10.1016/j.reactfunctpolym.2025.106549

Qingshi Meng , Xinyu Liu , Shuangshan Li , Kai Wang , Lei Chen , Bin Wu , Sensen Han

Conventional strategies for enhancing polymer flame retardancy face an intractable trade-off: high-loading additives inevitably sacrifice mechanical integrity and processability. To address this challenge, this study employed a novel silane coupling agent, (3-Isocyanatopropyl) trimethoxy silane (3IT), synthesizing modified black phosphorus nanosheets (M-BP) through a low-pollution mechanochemical approach using ball-milling grafting. Covalent surface engineering established covalent bonds and hydrogen bonds, enhancing interfacial bonding in BP/PUA composites. M-BP exhibited a markedly higher char yield (34.7 % at 700 °C) than neat BP, confirming that 3IT modification effectively improved BP's thermal stability and char-forming ability. As a result, when incorporated into the PUA matrix, the M-BP/PUA composite achieved approximately 9.5 times higher char residue than neat PUA, accompanied by reductions of 17.9 % in peak heat release rate (PHRR) and 8.5 % in total heat release (THR). The resultant M-BP/PUA composite preserved BP's excellent flame retardancy while exhibiting an 18.2 % increase in tensile strength, 6.6 % increase in impact strength, a 78.8 % increase in maximum tear force, and 94.7 % improvement in puncture resistance compared to unmodified BP composites. This research provides an innovative way for designing multifunctional flame retardants and creating high-performance polymers with high thermal stability, low flammability, and excellent mechanical properties, holding significant potential for practical applications.

提高聚合物阻燃性的传统策略面临一个棘手的权衡：高负荷添加剂不可避免地牺牲机械完整性和可加工性。为了解决这一挑战，本研究采用一种新型硅烷偶联剂（3-异氰托丙基）三甲氧基硅烷（3IT），通过低污染的机械化学方法，采用球磨接枝法合成改性黑磷纳米片（M-BP）。共价表面工程建立了共价键和氢键，增强了BP/PUA复合材料的界面键合。M-BP在700℃时的炭产率（34.7%）明显高于纯BP，表明3IT改性有效提高了BP的热稳定性和成焦能力。结果表明，当加入到PUA基体中时，M-BP/PUA复合材料的焦炭残渣比纯PUA高9.5倍，峰值放热率（PHRR）降低17.9%，总放热率（THR）降低8.5%。与未改性的BP复合材料相比，M-BP/PUA复合材料在保持BP优异阻燃性能的同时，拉伸强度提高了18.2%，冲击强度提高了6.6%，最大撕裂力提高了78.8%，抗穿刺性能提高了94.7%。本研究为设计多功能阻燃剂和制造具有高热稳定性、低可燃性和优异机械性能的高性能聚合物提供了一条创新途径，具有重要的实际应用潜力。

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引用次数: 0

Functionalized polyvinyl alcohol/gelatin films based on loaded curcumin oil-in-water emulsions for meat freshness monitoring 基于负载姜黄素水包油乳剂的功能化聚乙烯醇/明胶薄膜用于肉类新鲜度监测

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers

Pub Date : 2025-11-10 DOI: 10.1016/j.reactfunctpolym.2025.106551

Bingyang Wang , Jiaxin Wen , Ziqing Li , Huifang Wang , Xianghua Gao , Baolong Niu , Wenfeng Li

Responding to growing food spoilage concerns, especially in meat, this study develops an intelligent film with integrated antibacterial and spoilage-indicating functions. Fat-soluble curcumin (Cur) was dissolved in perillaldehyde (PAE) to enhance antibacterial activity and provide sensing capability. A Pickering emulsion (ZS-PAEC), stabilized by binary nanoparticles (ZS) via ultrasonic emulsification, greatly improved Cur's photostability: unencapsulated curcumin degraded rapidly within 2 h with a retention rate of only 0.065 %. In contrast, encapsulated curcumin had a high retention rate of 59.17 % and 4 % after 2 h and 12 h, respectively. The emulsion was blended with polyvinyl alcohol-gelatin (PG) and cast into PGZPC films, which showed enhanced water resistance, mechanical strength, pH/ammonia sensitivity for monitoring pork freshness and antioxidant efficacy of up to 53.48 %. The film maintained high responsiveness over 10 reuse cycles, demonstrating a viable strategy for smart biodegradable meat packaging.

针对日益增长的食品腐败问题，特别是在肉类中，本研究开发了一种具有抗菌和腐败指示功能的智能薄膜。将脂溶性姜黄素（Cur）溶解于紫苏醛（PAE）中，增强其抗菌活性和传感能力。采用二元纳米粒子（ZS）的超声乳化稳定的Pickering乳液（ZS- paec），大大提高了Cur的光稳定性：未包封的姜黄素在2 h内迅速降解，保留率仅为0.065%。包封后2 h和12 h姜黄素的保留率分别为59.17%和4%。将该乳液与聚乙烯醇-明胶（PG）混合，浇制成PGZPC膜，其耐水性、机械强度、pH/氨敏感性均有提高，用于猪肉新鲜度监测，抗氧化效果可达53.48%。该薄膜在10次重复使用循环中保持了高响应性，展示了智能可生物降解肉类包装的可行策略。

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引用次数: 0