Lignocellulosic materials rice husk

The lignocellulosic materials mostly used as fillers in thermoplastic composites include wood flour, starch, rice husk and a wide variety of vegetable fibers available such as jute, sisal, flax, hemp, coir, banana, pineapple, among others. And whenever vegetable fiber reinforced thermoplastic composites with higher properties are needed, possible solutions include improved adhesion, better fiber orientation, and filler hybridization with synthetic fibers or mineral fillers. The latter solution is an intermediate alternative regarding environmental friendliness, cost, weight and performance compared to an all synthetic composite [12,26]. 

Figure 8.13 shows the rice husk/glibenclamide and wheat gluten husk/glibenclamide MESP, where can be observed that the values are very similar at lignocellulosic materials (see Figure 8.8). The negative regions were appreciated at OH groups (C-OH bonds). The absorption of the glibenclamide can be seen mainly in to the rice husk by the formation of hydrogen bonds between the OH and NH, respectively.

The thermal degradation characteristics of lignocellulosic materials are strongly influenced by their chemical composition (cellulose, hemicellulose and lignin contents). The proportions of these constituents in rice husks vary to some extent between varieties, which may influence their kinetic behaviour 547250. The results of thermal degradation of rice husks show the two-step nature of the TG curves and the dual peak characteristics of the DTG curves, confirming the presence of two distinct reaction zones during... 

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