, Volume 24, Issue 10, pp 4263–4274 | Cite as

Enhancement in physicochemical properties of citric acid/nano SiO2 treated sustainable wood-starch nanocomposites

  • Prasanta Baishya
  • Tarun K. MajiEmail author
Original Paper


Citric acid was used as the cross-linker to prepare the sustainable wood starch nanocomposites (WSNC) from the renewable resources like starch and soft wood flour using water as the solvent. Nano SiO2 was employed to develop the physicochemical properties of the WSNC via a green path. In this process, starch was grafted with methylmethacrylate (MMA) and SiO2 was modified with N-cetyl-N,N,N-trimethyl ammonium bromide. Three different percentage of modified nano SiO2 (1–5 phr) were employed in the preparation of the composites and their properties were characterized by Fourier transform infrared spectroscopy. The morphological features of the composites were investigated through transmission electron microscopy and scanning electron microscopy study. Mechanical and dynamic mechanical properties like storage modulus, loss factors and tan δ value of the composites were thoroughly investigated. Thermal stability, water resistance and flammability of the composites were significantly improved after incorporation of modified SiO2. The maximum improvements in properties were achieved containing 3 phr modified SiO2 composites.


Starch Citric acid SiO2 Wood starch nanocomposites Mechanical properties Dynamic mechanical properties 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media B.V. 2017

Authors and Affiliations

  1. 1.Department of Chemical SciencesTezpur UniversityTezpurIndia

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