Initially, a chamber furnace will be used for performing the thermal treatments in a batch approach.ĭifferent final applications of the electronic devices can be selected. The study will focus on the two main stages in the production of activated carbon from fibrous precursors: stabilization of lignin fibres and chemical activation of the precursor in inert atmosphere. Activated carbon production from non-woven lignin felt.Stretchable electronics prototypes will be fabricated in the form of electrically conductive hybrid polymer films and their quality will be assed. Stretchable electronics concerns electrical and electronic circuits and combinations of these that are elastically or inelastically stretchable by more than a few percent while retaining function. Production and quality tests of stretchable electronic films.To obtain at lab scale composite parts with better mechanical and electrical properties based on the incorporation of carbon fibre mats into Structural applications, Non-structural applications and Multifunctional applications. Later on, PUs can be used for molecular weight upgrade of the lignins, or for forming blends to be trialled in the spinning process. Two procedures can be used for reducing the pH around to 9, LignoBoost process (acidification takes place, enhanced by means of CO 2 presence) and LignoForce process, where the black liquor is first oxidized (O 2), and then acidified (CO 2).įinally, the lignin obtained from black liquor by acidification, filtration and vacuum drying will be trialled to produce polyurethanes (PUs). Reducing the pH of the initial black liquor, it is then possible to proceed with the filtration of particles of lignin which will form, by means of membrane filtration or ultrafiltration. Second, the extraction of lignin from the black liquor will be realized by means of acidification. Then pure lignin will be used as sustainable raw-material for green processes able to generate promising added-value compounds products such as fibre precursors.įirst, the liquid stream generated from the kraft process, known as black liquor, will be thoroughly characterized using specific and tailored analytical methodologies.

Conversion of black liquors from the kraft process of a Eucalyptus pulp and paper mill factory into pure lignin.

Openlca polymer membrane