Tsou Chi-Hui, Du Jian-Hua, Yao Wei-Hua, Fu Lei, Wu Chin-San, Huang Yuxia, Qu Chang-Lei, Liao Bin
School of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China.
Material Corrosion and Protection Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Zigong 643000, China.
Polymers (Basel). 2023 Jun 22;15(13):2779. doi: 10.3390/polym15132779.
Nano zinc oxide-decorated graphene (G-ZnO) was blended with polyphenylene sulfide (PPS) to improve its tensile, thermal, crystalline, and barrier properties. The properties of neat PPS and PPS/G-ZnO nanocomposites were characterized and compared using various tests, including tensile tests, scanning electron microscopy, X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, evaluation of Escherichia coli inhibition, and barrier performance. The results demonstrated that G-ZnO played a crucial role in heterogeneous nucleation and reinforcement. When the concentration of G-ZnO was 0.3%, the tensile strength, elongation at break, thermostability, crystallinity, and water vapor permeability coefficients (WVPC) approached their maximum values, and the microscopic morphology changed from the original brittle fracture to a relatively tough fracture. In addition, when G-ZnO was added to PPS at a ratio of 0.3%, the tensile strength, elongation at break, and WVPC of PPS were increased by 129%, 150%, and 283%, respectively, compared to pure PPS. G-ZnO endowed the nanocomposites with antibacterial properties. The improvement in barrier performance can be attributed to three reasons: (1) the presence of G-ZnO extended the penetration path of molecules; (2) the coordination and hydrogen bonds between PPS polymer matrix and G-ZnO nanofiller narrowed the HO transmission path; and (3) due to its more hydrophobic surface, water molecules were less likely to enter the interior of PPS/G-ZnO nanocomposites. This study provides valuable insights for developing high-performance PPS-based nanocomposites for various applications.
将纳米氧化锌修饰的石墨烯（G-ZnO）与聚苯硫醚（PPS）共混，以改善其拉伸、热、结晶和阻隔性能。使用各种测试方法对纯PPS和PPS/G-ZnO纳米复合材料的性能进行了表征和比较，包括拉伸测试、扫描电子显微镜、X射线衍射、差示扫描量热法、热重分析、大肠杆菌抑制评估和阻隔性能测试。结果表明，G-ZnO在异相成核和增强过程中起着关键作用。当G-ZnO的浓度为0.3%时，拉伸强度、断裂伸长率、热稳定性、结晶度和水蒸气渗透系数（WVPC）接近其最大值，微观形态从原来的脆性断裂转变为相对韧性的断裂。此外，当以0.3%的比例将G-ZnO添加到PPS中时，与纯PPS相比，PPS的拉伸强度、断裂伸长率和WVPC分别提高了129%、150%和283%。G-ZnO赋予了纳米复合材料抗菌性能。阻隔性能的提高可归因于三个原因：（1）G-ZnO 的存在延长了分子的渗透路径；（2）PPS聚合物基体与G-ZnO纳米填料之间的配位和氢键作用使HO传输路径变窄；（3）由于其表面更疏水，水分子进入PPS/G-ZnO纳米复合材料内部的可能性较小。本研究为开发用于各种应用的高性能PPS基纳米复合材料提供了有价值的见解。
