Preparation and Properties of Silver-Based Cellulose/Polyvinyl Alcohol Antibacterial Materials
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Preparation and Properties of Silver‑Based Cellulose/Polyvinyl Alcohol Antibacterial Materials Zhaoqi Wang1 · Shengli Zhao1 · Ling Hong1 · Jintian Huang1 Received: 11 March 2020 / Accepted: 12 July 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract This paper reports the synthesis and application of nanosilver antibacterial materials. The preparation methods of nanosilver complexes are described. The effect of silver nitrate concentration and nanosilver dispersion on antibacterial properties was analysed. In this experiment, TEMPO oxidant was used to oxidize hydroxyl on the C 6 position of wood nanocellulose into a carboxyl group. Meanwhile, carboxyl compound was used to react with A gNO3, the silver composite material was prepared with PVA as the substrate. We use interface grafting. The surface of cellulose is bonded with reactive functional groups to form a transition layer. To improve the interface bonding between matrix and reinforcing fiber. The Ag-NC-PVA nanocomposite film was characterized by UV–Vis, SEM, TEM, mechanical properties and antibacterial properties analysis. SEM and TEM images showed that the size of most silver nanoparticles ranged from 5 to 20 nm; the mean particle size was 10 nm. The mechanical properties of Ag-NC-PVA films were greater than that of PVA film. When the amount of Ag-NC was 4%, its tensile strength was 71.3 MPa; it’s almost 15% higher than PVA. After antibacterial analysis, Ag-NC endowed PVA with excellent antibacterial properties. The prepared Ag-NC-PVA greatly promotes the practical application development of the silver-based composite bacteriostatic material. Keywords Nanosilver · Interface bonding · Nanocellulose · Mechanical properties · Antibacterial materials
1 Introduction In recent years, with the continuous development of nanotechnology in the field of materials, many new materials have emerged, such as: nanomaterials. Then came a new era of nanomaterials. Nanosilver was an advanced functional material; nanosilver had the characteristics of small size effect, surface effect and macroscopic quantum tunnelling effect. It had an important application value in optoelectronics, biosensing, catalysis, antibacterial, etc. It can be applied to optical materials [1–4], catalyst materials [5–8], antibacterial materials [9–15], biosensor materials [16, 17], battery electrode materials [18–20], low temperature superconductor materials [21], etc. Silver nanoparticles (AgNPs) have been widely used due to its broad spectrum of antimicrobial activities and low toxicity toward mammalian cells [22, 23].
* Jintian Huang [email protected] 1
College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot, China
At present, there were many ways to prepare nanosilver. According to the principle of preparation, the preparation methods of silver nanoparticles can be divided into three categories: Physical method [24, 25]. Chemical method [26, 27]. Biological method [28, 29]. Among them, the physical method was widely used
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