Yang Seong Baek, Jeong Dae Won, Lee Jungeon, Yeasmin Sabina, Kim Chang-Kil, Yeum Jeong Hyun
Department of Biofibers and Biomaterials Science, Kyungpook National University, Daegu 41566, Korea.
Department of Horticultural Science, Kyungpook National University, Daegu 41566, Korea.
Materials (Basel). 2022 Mar 25;15(7):2439. doi: 10.3390/ma15072439.
For the first time, poly(vinyl alcohol) (PVA)/poly(methyl methacrylate-methallyl alcohol) (P(MMA-MAA)) (9:1, 7:3, 5:5) blend films were made simultaneously using the saponification method in a heterogeneous medium from poly(vinyl acetate) (PVAc)/poly(methyl methacrylate) (PMMA) (9:1, 7:3, 5:5) blend films, respectively. The surface morphology and characteristics of the films were investigated using optical microscopy (OM), atomic force microscopy (AFM), X-ray diffractometer (XRD), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Moreover, the effect of the PVAc content on the degree of saponification (DS) of the PVAc/PMMA films were evaluated and revealed that the obtained DS value increased with the increase in PVAc content in the PVAc/PMMA blend films. According to the OM results, the saponified films demonstrated increased surface roughness compared with the unsaponified films. The AFM images revealed morphological variation among the saponified PVAc/PMMA blend films with different mass ratios of 9:1, 7:3, and 5:5. According to the DSC and TGA results, all blend film types exhibited higher thermal property after the saponification treatment. The XRD and FTIR results confirmed the conversion of the PVAc/PMMA into PVA/P(MMA-MAA) films. Thus, our present work may give a new idea for making blend film as promising medical material with significant surface properties based on hydrophilic/hydrophobic strategy.
首次分别采用皂化法在非均相介质中由聚醋酸乙烯酯（PVAc）/聚甲基丙烯酸甲酯（PMMA）（9:1、7:3、5:5）共混膜同时制备了聚乙烯醇（PVA）/聚（甲基丙烯酸甲酯-甲基烯丙醇）（P（MMA-MAA））（9:1、7:3、5:5）共混膜。使用光学显微镜（OM）、原子力显微镜（AFM）、X射线衍射仪（XRD）、傅里叶变换红外（FTIR）光谱、热重分析（TGA）和差示扫描量热法（DSC）研究了这些膜的表面形态和特性。此外，评估了PVAc含量对PVAc/PMMA膜皂化度（DS）的影响，结果表明，在PVAc/PMMA共混膜中，随着PVAc含量的增加，所得的DS值增大。根据OM结果，与未皂化的膜相比，皂化后的膜表面粗糙度增加。AFM图像显示了不同质量比9:1、7:3和5:5的皂化PVAc/PMMA共混膜之间的形态变化。根据DSC和TGA结果，所有共混膜类型在皂化处理后均表现出更高的热性能。XRD和FTIR结果证实了PVAc/PMMA已转化为PVA/P（MMA-MAA）膜。因此，我们目前的工作可能为基于亲水/疏水策略制备具有显著表面性能的有前景的医用材料共混膜提供新思路。
