Enhancement in physicochemical properties of citric acid/nano SiO2 treated sustainable wood-starch nanocomposites
- 193 Downloads
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.
KeywordsStarch 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.
- Kang J-S, Yu C, Zhang F-A (2009) Effect of silane modified SiO2 particles on poly (MMA-HEMA) soap-free emulsion polymerization. Iran Polym J 18(22):927Google Scholar
- Youming D, Xiaoyan S, Shifeng Z, Jianzhang L (2015) Dynamic mechanical properties and thermal stability of furfuryl alcohol and nano-SiO2 treated poplar wood. IOP Conf Ser Mater Sci Eng 87(1):012027Google Scholar