Wang Yongxin, Duo Tongtong, Xu Xingmin, Xiao Zhihong, Xu Airong, Liu Rukuan, Jiang Chaobo, Lu Junning
School of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan 471003, P. R. China.
School of Forensic Medicine, Henan University of Science and Technology, Luoyang, Henan 471003, P. R. China.
ACS Omega. 2020 Sep 17;5(38):24256-24261. doi: 10.1021/acsomega.0c02249. eCollection 2020 Sep 29.
Poly(methyl methacrylate) (PMMA) is a thermoplastic polyester with excellent properties such as lightweight, low price, biocompatibility, and so on. However, its extensive utilization is restricted by the deficiencies of brittleness and poor mechanical properties. In this study, high-performance PMMA films enhanced by methylcellulose (MC) were fabricated by a simple procedure at ambient temperatures. The effects of PMMA/MC mass ratio and thermal compression treatment on mechanical properties (tensile strength and elongation) were systematically investigated. The PMMA/MC films showed remarkably enhanced mechanical properties compared with neat PMMA. The tensile strengths of the PMMA/MC (3:97) and PMMA/MC (1:1) films are higher than that of the PMMA/MC (9:1) film by about 471 and 83%, respectively. The mechanical properties were also improved after thermal compression treatment. Importantly, the PMMA/MC films could be recovered and reused. In addition, the morphologies, crystalline state, and chemical structures of the films were investigated by scanning electron microscopy, X-ray diffraction, and C NMR spectroscopy. The films are expected to be used as sustainable and potential alternatives to petroleum-based polymer film products because of their simple preparation procedure, high-performance mechanical properties, excellent recycling, eco-friendly features, and scale manufacture.
聚甲基丙烯酸甲酯（PMMA）是一种热塑性聚酯，具有轻质、低价、生物相容性等优异性能。然而，其广泛应用受到脆性和机械性能差等缺陷的限制。在本研究中，通过在环境温度下的简单工艺制备了由甲基纤维素（MC）增强的高性能PMMA薄膜。系统研究了PMMA/MC质量比和热压处理对机械性能（拉伸强度和伸长率）的影响。与纯PMMA相比，PMMA/MC薄膜的机械性能显著增强。PMMA/MC（3:97）和PMMA/MC（1:1）薄膜的拉伸强度分别比PMMA/MC（9:1）薄膜高约471%和83%。热压处理后机械性能也有所提高。重要的是，PMMA/MC薄膜可以回收再利用。此外，通过扫描电子显微镜、X射线衍射和碳核磁共振光谱对薄膜的形态、结晶状态和化学结构进行了研究。由于其制备工艺简单、机械性能高、回收性能优异、环保特性以及可规模化生产，这些薄膜有望成为石油基聚合物薄膜产品的可持续且有潜力的替代品。
