Vlad-Bubulac Tăchiță, Serbezeanu Diana, Perju Elena, Suflet Dana Mihaela, Rusu Daniela, Lisa Gabriela, Filip Tudor-Alexandru, Olariu Marius-Andrei
Petru Poni Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iasi, Romania.
Department of Chemical Engineering, Faculty of Chemical Engineering and Environmental Protection, Gheorghe Asachi Technical University of Iasi, Bld. Prof. Dr. Doc. D. Mangeron 73, 700050 Iasi, Romania.
Nanomaterials (Basel). 2025 Aug 14;15(16):1251. doi: 10.3390/nano15161251.
In this study, composite films based on phosphorylated polyvinyl alcohol (PVA-P), TiCT MXene, and cholesteryl acetate (ChLC) were designed and characterized to explore their potential in flexible electronic applications. The incorporation of phosphate groups and ChLC enhanced intermolecular interactions, as confirmed with FTIR spectroscopy. Morphological and optical analyses revealed a transition from homogeneous to phase-separated structures with birefringent textures in ChLC-rich films. Thermal studies demonstrated improved stability and increased glass transition and melting temperatures, particularly in samples with higher ChLC content. Mechanical and dielectric evaluations highlighted the tunability of stiffness, flexibility, permittivity, and dielectric losses depending on MXene and ChLC ratios. These multifunctional films exhibit flame-retardant behavior and show promise for use in stimuli-responsive, sustainable electronic devices such as flexible displays and sensors.
在本研究中，设计并表征了基于磷酸化聚乙烯醇（PVA-P）、TiCT MXene和醋酸胆固醇（ChLC）的复合薄膜，以探索其在柔性电子应用中的潜力。傅里叶变换红外光谱（FTIR）证实，磷酸基团和ChLC的引入增强了分子间相互作用。形态学和光学分析表明，富含ChLC的薄膜从均匀结构转变为具有双折射纹理的相分离结构。热学研究表明，稳定性得到改善，玻璃化转变温度和熔点升高，尤其是在ChLC含量较高的样品中。力学和介电性能评估强调了刚度、柔韧性、介电常数和介电损耗的可调性，这取决于MXene和ChLC的比例。这些多功能薄膜具有阻燃性能，有望用于如柔性显示器和传感器等刺激响应型、可持续的电子设备。
