[9] carried out a research to develop anew insulating bio-based composite made with chitosan and sunflower’s stalk particles. Composites with a thermal conductivity of 0.056 W/(m K) were obtained with a ratio of chitosan of 4.3%(w/w) and a size grading of particles higher to 3 mm. These thermal performances are competitive with those of other insulating bio-based materials available on the market. Panyakaew and Fotios