High-Performance and Water Resistant PVA-Based Films Modified by Air Plasma Treatment

Membranes

Xin Rao¹  Xueyu Du¹  Qin Wen¹  Yue Gong¹  Qi Zhou¹  Zhiqiang Ou¹  Lingying Fu¹  Chunqing Huo² 

[1] Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China;School of Materials Science and Engineering, Hainan University, Haikou 570228, China;

关键词: air plasma;    PVA film;    surface modification;    water resistance;    crosslinking;   

DOI  :  10.3390/membranes12030249

来源: DOAJ

【 摘 要 】

Plasma treatment is considered a straightforward, cost-effective, and environmental-friendly technique for surface modification of film materials. In this study, air plasma treatment was applied for performance improvement of pure PVA, cellulose nanocrystal (CNC)/PVA, and CNC/oxalic acid (OA)/PVA films. Compared with the original performance of pure PVA, the mechanical properties and water resistance of air plasma treated films were greatly improved. Among them, the CNC/OA/PVA film treated by three minutes of air plasma irradiation exhibits the most remarkable performance in mechanical properties (tensile strength: 132.7 MPa; Young’s modulus: 5379.9 MPa) and water resistance (degree of swelling: 47.5%; solubility: 6.0%). By means of various modern characterization methods, the wettability, surface chemical structure, surface roughness, and thermal stability of different films before and after air plasma treatment were further revealed. Based on the results obtained, the air plasma treatment only changed the surface chemical structure, surface roughness, and hydrophobicity, while keeping the inner structure of films intact.

【 授权许可】

Unknown