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

Overview

Journal Membranes (Basel)

Date 2022 Mar 24

PMID 35323724

Authors

Xin Rao

Qi Zhou

Qin Wen

Zhiqiang Ou

Lingying Fu

Yue Gong

Xueyu Du

Chunqing Huo

Affiliations

Soon will be listed here.

Abstract

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.

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