可生物降解PBAT@CoFe2O4箔作为智能表面加热的磁活性光热材料

IF 5.1 3区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nanoscale Pub Date : 2025-10-01 DOI:10.1039/d5nr02710a

Emilia Zachanowicz, Anna Tomaszewska, Magdalena Kulpa-Greszta, Cristian Pilloni, Dominika Zakutna, Maria Romerowicz-Misielak, Robert Pazik

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引用次数: 0

摘要

本文主要研究了利用溶剂蒸发铸造技术制备可生物降解PBAT@CoFe2O4复合箔的制备、理化性质及近红外能量转化为热能的方法。通过热分解合成了超顺磁性CoFe2O4纳米粒子（6.3 nm），并将其掺入PBAT基体中，振动模式发生了转变，表明其界面相互作用强。TGA/DTA和DSC分析表明，由于钴纳米铁氧体的催化活性，复合箔的降解和热性能发生了显著变化。磁性表征证实了原液CoFe2O4和铁氧体掺杂PBAT复合箔的超顺磁性。我们观察到，在NIR808激光照射下，复合材料表现出快速加热，而在AMF下，由于颗粒在聚合物基体内的固定，箔片加热无效。最高记录温度为115°C，比吸收率（SAR）为97.5 W/g（由于聚合物基体熔化的风险，最大允许激光功率）。利用离体猪皮模型模拟软组织相互作用，进一步评估其受热能力，揭示在受热作用下蛋白质凝固引起的皮肤变色和表面变化。采用NIH/3T3成纤维细胞系，按照ISO标准对参比箔和复合箔进行细胞毒性试验，结果表明，参比箔和复合箔是安全无毒的。结果证实了nir响应PBAT@CoFe2O4复合材料的潜力，可以用作各种实际应用的智能能量转换材料。尽管AMF不能应用于加热箔与磁性颗粒集成，可用于快速分离聚合物复合材料从废物混合物使用磁铁在回收设施的隔离。这个特性在产品的最终使用寿命中可能特别重要。

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Biodegradable PBAT@CoFe2O4 Foils as Magnetically Active Photothermal Materials for Smart Surface Heating

Our study is devoted to the development, physicochemical characterization, and NIR energy conversion to the heat of biodegradable PBAT@CoFe2O4 composite foil fabricated via the solvent evaporation casting technique. Superparamagnetic CoFe2O4 nanoparticles (6.3 nm) were synthesized through thermal decomposition and incorporated into the PBAT matrix, as confirmed by vibration modes shift, suggesting strong interfacial interactions. The TGA/DTA and DSC analysis showed a significant change in the composite foil degradation and thermal properties induced by the presence of cobalt nanoferrite due to its catalytic activity. Magnetic characterization confirmed superparamagnetic behavior of stock CoFe2O4 and ferrite-doped PBAT composite foil. We observed that under NIR808 laser irradiation, the composite exhibited rapid heating, whereas foil heating under AMF was ineffective due to the immobilization of particles within the polymer matrix. The highest recorded temperature was 115 °C with a specific absorption rate (SAR) of 97.5 W/g (maximum allowed laser power due to the risk of polymer matrix melting). Heating ability was further evaluated using a pork skin ex-vivo model to simulate soft tissue interaction, revealing skin discoloration and surface changes caused by protein coagulation under heat generation. Cytotoxicity tests of reference and composite foil were carried out using NIH/3T3 fibroblast cell line according to ISO standards, showing that foils can be considered safe and non-toxic. The results confirm the potential of NIR-responsive PBAT@CoFe2O4 composites that can be used as smart energy-converting materials for various practical applications. Even though the AMF cannot be applied for heating foils integrated with magnetic particles can be used for the fast separation of polymeric composites from a waste mixture using magnets upon their segregation in the recycling facilities. This feature can be of particular interest upon product end-life.

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来源期刊

Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

12.10

自引率

3.00%

发文量

1628

审稿时长

1.6 months

期刊介绍： Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.