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Description

Sustainable acoustic materials based on cellulose are attracting increasing attention as alternatives to conventional mineral or polymeric sound absorbers. Foam forming has emerged as a promising manufacturing process for such materials, enabling the production of lightweight porous structures with high porosity. The acoustic potential of foam-formed materials has been demonstrated for wood fibers and more recently for plant fibers, with absorption performance comparable to conventional fibrous absorbers. Our research aims to development of novel sustainable (carbon negative) acoustical materials which could be used to control room acoustics, sound insulation in structures or even in ear plugs.