Kanmaz Dilayda, Celen Rumeysa, Karaca Esra, Manasoglu Gizem
Department of Textile Engineering, Engineering Faculty, Bursa Uludag University, Bursa 16059, Turkey.
Department of Biomaterials, Graduate School of Natural and Applied Sciences, Bursa Uludag University, Bursa 16059, Turkey.
Polymers (Basel). 2024 Nov 23;16(23):3259. doi: 10.3390/polym16233259.
Herein, composite films were produced by incorporating different amounts (1, 3, 5, and 7%) of barium titanate nanoparticles into the thermoplastic polyurethane matrix using a solution casting method. This study examined the impact of the presence and concentration of a barium titanate additive on morphologic properties, mechanical performance, thermal stability, solar behavior, and wettability of produced film samples. The films were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, thermal gravimetric analysis, scanning electron microscope, ultraviolet-visible near-infrared spectrophotometer, water contact angle, and tensile strength measurements. In the present study, the mass loss of samples containing 7% barium titanate was 24% lower than that of the pure polyurethane reference. The increase of barium titanate rate added to polyurethane enhanced the solar reflectance property of the films, including the near-infrared region. As a prominent result, the transmittance value decreased significantly compared to the reference in the ultraviolet region, and it dropped to 3% for the highest additive concentration. The contact angle values of polyurethane films increased by 11-40% depending on the barium titanate addition ratio. The nano additive also positively affected the mechanical performance of the reference polyurethane film by slightly increasing the tensile strength values.
在此，采用溶液浇铸法将不同含量（1%、3%、5%和7%）的钛酸钡纳米颗粒掺入热塑性聚氨酯基体中制备复合薄膜。本研究考察了钛酸钡添加剂的存在及其浓度对所制备薄膜样品的形态学性能、力学性能、热稳定性、日光性能和润湿性的影响。通过傅里叶变换红外光谱、差示扫描量热法、热重分析、扫描电子显微镜、紫外-可见近红外分光光度计、水接触角和拉伸强度测量对薄膜进行了表征。在本研究中，含7%钛酸钡的样品的质量损失比纯聚氨酯参比样品低24%。添加到聚氨酯中的钛酸钡比例的增加提高了薄膜的日光反射性能，包括近红外区域。一个显著的结果是，与参比样品相比，在紫外区域的透过率值显著降低，对于最高添加剂浓度，透过率降至3%。聚氨酯薄膜的接触角值根据钛酸钡添加比例增加了11%-40%。纳米添加剂还通过略微提高拉伸强度值对参比聚氨酯薄膜的力学性能产生了积极影响。
