Microwave Physics and Dielectrics Department, National Research Centre, Giza, Egypt.
Sci Rep. 2024 Jun 6;14(1):13051. doi: 10.1038/s41598-024-62709-5.
In this work, the surface of polyvinyl chloride PVC sheet was modified by blending it with sunflower seed oil SSO to obtain PVC sheet/SSO films of ratios 100/0, 90/10, 80/20, 70/30, 60/40, and 50/50 (v/v)% using the solution casting method. Various techniques were used to characterize the prepared films, besides the use of hemolysis assays and blood clot formation tests. FTIR spectra revealed that there was a good interaction between the PVC sheet and the oil. The dielectric measurement indicated that SSO addition enhanced the dielectric properties of the sheet. The study of dielectric relaxation times confirmed the interaction between SSO and the sheet. DC conductivity increased to 6 × 10 S/m, so it could be applied in antistatic applications. Also, SSO addition increased the value of the thermal stability. According to SEM micrographs, the film was roughened at a ratio of 60/40 and smoothed out at 50/50. This behavior was confirmed with roughness and contact angle measurement results, in which the film of ratio 60/40 had the highest value equal to (72.03°) and then decreased at 50/50 to (59.62°). These results were confirmed by XRD measurement as the crystallinity increased at the film ratio of 60/40 and decreased again at 50/50. Also, the ratio of 60/40 demonstrated a large decrease in thrombus weights along with a slight increase in hemolysis, which is within the acceptable range and has a high degree of biocompatibility, so this concentration is recommended to be used in blood bags applications.
在这项工作中，通过将葵花籽油（SSO）与聚氯乙烯（PVC）片共混，用溶液浇铸法制备了比例为 100/0、90/10、80/20、70/30、60/40 和 50/50（v/v）%的 PVC 片/SSO 薄膜。除了使用溶血试验和血栓形成试验外，还使用了各种技术来表征所制备的薄膜。FTIR 光谱表明，PVC 片和油之间存在良好的相互作用。介电测量表明，SSO 的添加增强了片的介电性能。介电弛豫时间的研究证实了 SSO 与片之间的相互作用。直流电导率增加到 6×10 S/m，因此可应用于抗静电应用。此外，SSO 的添加增加了热稳定性的价值。根据 SEM 显微照片，在比例为 60/40 时，薄膜变得粗糙，在比例为 50/50 时变得光滑。这种行为通过粗糙度和接触角测量结果得到了证实，其中比例为 60/40 的薄膜具有最高值，等于（72.03°），然后在比例为 50/50 时降低到（59.62°）。XRD 测量结果证实了这一点，因为在薄膜比例为 60/40 时结晶度增加，而在比例为 50/50 时再次降低。此外，比例为 60/40 的血栓重量显著减少，同时溶血略有增加，这在可接受范围内，具有高度的生物相容性，因此建议在血袋应用中使用该浓度。
