Biobased nanocomposite films with high mechanical and low oxygen-barrier performance were designed based on the hot-water wood extract that could not only provide added value to wood converting industrial processes but also have potential applications in agriculture, food packaging application. In this work, a facile approach to efficiently produce hot-water wood extract (HWE)/montmorillonite (MMT) based nanocomposite films with excellent physical properties are presented. The focuses of this study were to investigate the effects of MMT content on the structure and mechanical properties of nanocomposites, and the effects of CMC on the physical properties of HWE-MMT based films. The results suggested that the intercalation of different ratios of hot-water wood extract and CMC in montmorillonite could provide compact and robust nanocomposite films with nacre-like structure and multifunctional characteristics. This study revealed that the mechanical properties of the nanocomposite film F<sub>CMC0.05 </sub>(91.5 MPa) was dramatically enhanced and higher approximately 21.4% than the nanocomposite film F<sub>1-1.5</sub> (75.4 MPa). In addition, the nanocomposite films HWE-MMT-CMC with an low oxygen permeability, also exhibited good thermal stability due to the small amount of CMC. These results offer comprehensive understanding for developing high-performance nanocomposites which are based on natural polymers (HWE) and assembling layered clays (MMT). These nanocomposite films have great potential in the field of renewable packaging applications.

Facile synthesis of high strength and oxygen-barrier performance of hot-water wood extract films

253rd National Meeting (2017)

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