Cellulose represents a promising alternative regarding the development of new materials.1,2 In parallel, Silicone based materials and especially the poly(dimethylsiloxane) (PDMS) answers to the requirements of numerous and various applications owing the -Si-O- linkages that bring a chemical robustness, a high thermo-oxidative stability, a high moisture resistance as well as a low surface tension to the materials. Thus there is a great interest for designing Silicone-based Cellulose Materials. However, there is in parallel a need for developing eco-friendly processes ensuring the compatibility and the homogeneous ligation between the two substrates. In a first part, we present a new method of cellulose fibers/polymer coupling consisting in a unique operation of reactive compounding, based on an original chemistry of organosilanes in the polymer melt.3 In this process, grafting on polymer chains and on cellulose fibres surface as well as formation of Si-O-Si network occur in parallel during reactive extrusion. In a second part, we discuss on the elaboration and characterization of alkynated-cellulose which constitutes a new building block for the elaboration of bio-based composites (Figure 1).4,5

Silicone-based cellulose materials: Processes & characterizations

253rd National Meeting (2017)

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