**Abstract**

[25] George J, Bhagawan SS, Thomas S. Thermogravimetric and dynamic mechanical analysis of pineapple fibre reinforced polyethylene composites. J. Therm. Anal. 1996;47:

[26] Kim HS, Yang HS, Kim HJ, Lee BJ,Hwang TS. Thermal properties of agro-flour-filled biodegradable polymer bio-composites. J. Therm. Anal. Cal. 2005;81:299. doi: 10.1007/

[27] Mohanty S, Verma SK, Nayak SK. Compos. Dynamic mechanical and thermal properties of MAPE treated jute/HDPE. Composites. Sci. Technol. 2006;3/4:538-547. doi:

[28] Marcovich NE, Villar MA. Thermal and mechanical characterization of linear lowdensity polyethylene/wood flour composites. J. Appl. Polym. Sci. 2003;90:2775-2784.

[29] Wielage B, Lampke T, Marx G, Nestler K, Starke D. Thermogravimetric and differential scanning calorimetric analysis of natural fibres and polypropylene. Thermochim. Acta

[30] Hatakeyema H, Tanamachi N, Matsumura H, Hirose S, Hatakeyama T. Bio-based polyurethane composite foams with inorganic fillers studied by thermogravimetry.

1121-1140. doi: 10.1007/BF01979452

24 Composites from Renewable and Sustainable Materials

10.1016/j.compscitech.2005.06.014

1999;337:169-177. doi:10.1016/S0040-6031(99)00161-6

Thermochim. Acta 2005;431:155-161. doi:10.1016/j.tca.2005.01.065

s10973-005-0782-7.

doi: 10.1002/app.12934

In this century, the developing country has a high potential towards the growth of green composites, and therefore there is significant achievement in green technology especially in the field of building constructions and automotive because of the environment and sustainability issues. The market for development of advanced biocomposite materials produced from biomass and recyclable post-consumer plastics is increasing. Natural fibre-reinforced biocomposites based on rice husk biofibre (RHB), recycled high-density polyethylene (rHDPE) and recycled polyethylene terephthalate (rPET) were prepared through a two-step extrusion and hot pressing. The influence of thermoplastic blend (TPB) matrix types (uncompatibilized and compatibilized with 5 parts per hundred compound (phc) ethylene-glycidyl methacrylate (E-GMA) copolymer) and high fibre contents of 50, 60, 70 and 80 wt% RHB on the composite properties was studied. Maleic anhydride polyethylene (MAPE) was added as a coupling agent to enhance the interfacial adhesion of the fibre-matrix phases. Results showed that water absorption, thickness swelling (TS) and tensile and flexural properties enhanced tremendously with the increase of rice husk filler loadings. Biocomposites based on compatibilized blend matrix exhibited higher mechanical properties and dimensional stability than those based on uncompatibilized ones. Thermal analysis results from thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) indicated the notable improvement in thermal stability as the added rice husk (RH) fibre content increased. From these results, we can conclude that RHF can work well with rHDPE/rPET thermoplastic blend for manufacturing high loading biocomposite products.

**Keywords:** green composite, high fibre loading, recycled polymer blend, agro waste, melt blending, properties

© 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. © 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
