Preprint Article Version 1 This version is not peer-reviewed

High-Performance Microcrystalline Cellulose/Soy Protein Isolate-Based Nanocomposite Film via Cu and Zn Nanoclusters Modification

Version 1 : Received: 31 March 2017 / Approved: 3 April 2017 / Online: 3 April 2017 (16:42:12 CEST)

A peer-reviewed article of this Preprint also exists.

Li, K.; Jin, S.; Chen, H.; He, J.; Li, J. A High-Performance Soy Protein Isolate-Based Nanocomposite Film Modified with Microcrystalline Cellulose and Cu and Zn Nanoclusters. Polymers 2017, 9, 167. Li, K.; Jin, S.; Chen, H.; He, J.; Li, J. A High-Performance Soy Protein Isolate-Based Nanocomposite Film Modified with Microcrystalline Cellulose and Cu and Zn Nanoclusters. Polymers 2017, 9, 167.

Journal reference: Polymers 2017, 9, 167
DOI: 10.3390/polym9050167

Abstract

Soy protein isolate (SPI) based materials are abundant, biocompatible, renewable, and biodegradable. In order to improve the tensile strength (TS) of SPI films, we prepared a novel composite film modified with microcrystalline cellulose (MCC) and metal nanoclusters (NCs) in this research. The effects of the modification of MCC on the properties of SPI-Cu NCs and Zn NCs films were investigated. Attenuated total reflectance-Fourier transformed infrared spectroscopy analyses and X-ray diffraction patterns characterized the strong interactions and reduction of the crystalline structure of the composite films. Scanning electron microscope showed the enhanced cross-linked and entangled structure of modified films. Compared with untreated SPI film, the tensile strength of the SPI-MCC-Cu and SPI-MCC-Zn films increased from 2.91 MPa to 13.95 and 6.52 MPa, respectively. Moreover, the results also indicated their favorable water resistance with higher water contact angle. Meanwhile, the composite films exhibited increased initial degradation temperatures, demonstrating their higher thermostability. The results suggested that MCC could effectively improve the performance of SPI-NCs films, which would provide a novel preparation method for environmentally friendly SPI-based films in the applications of packaging materials.

Subject Areas

Soy protein isolate; Microcrystalline cellulose; Metal nanoclusters; Nanocomposite film; Tensile strength

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