Abstract: The invention relates to an admixture for a cementitious composition comprising microfibrillar cellulose and/or a derivative thereof. The invention also relates to a method of manufacturing said admixture and to the use of the microfibrillar cellulose and/or a derivative thereof in the concrete admixture. The invention further relates to a cementitious composition comprising said admixture and methods of manufacture and use thereof.

Abstract: In a method for preparing nanofibrillar cellulose, fibrous dispersion of ionically charged cellulose is repeatedly passed through a mechanical process of disrupting fibers into fibrils until the viscosity starts to decrease. The number average diameter of the nanofibrillar cellulose after the mechanical process is in the range of 2-10 nm, and the zero-shear viscosity is below 10 Pa·s, preferably below 1 Pa·s, when measured in the concentration of 0.5 wt-%. The nanofibrillated cellulose is low aspect ratio nanofibrillated cellulose (NFC-L).

Abstract: The present invention is related to methods and materials for culturing and transporting stem cells in a three-dimensional culture. The materials comprise cellulose nanofibrils in a form of three-dimensional discontinuous entities in a biocompatible hydrogel.

Abstract: Method for preparing a membrane from fibril cellulose includes supplying fibril cellulose dispersion on a filter layer, draining liquid from a fibril cellulose dispersion by the effect of reduced pressure through the filter layer that is impermeable to fibrils of the fibril cellulose but permeable to the liquid to form a membrane sheet on the filter fabric, applying heat on the opposite side of the membrane sheet to the membrane sheet while continuing draining of the liquid through the filter layer by pressure difference over the filter layer, and removing the membrane sheet from the filter layer as a freestanding membrane.

Abstract: A method for processing fibril cellulose which is in the form of aqueous fibril cellulose gel includes lowering the pH of the aqueous fibril cellulose gel to provide aqueous fibril cellulose gel of reduced water retention capacity, and dewatering the aqueous fibril cellulose gel of reduced water retention capacity to provide dewatered fibril cellulose. The dewatering is performed by pressure filtration.

Abstract: Disclosed is a composition for embedded three-dimensional microbial culture, the composition including nanofibrillar cellulose and at least one nutrient source. Also disclosed is a method for the manufacture of a composition for embedded three-dimensional microbial culture, the method including the steps of providing nanofibrillar cellulose, mixing the nanofibrillar cellulose with water and at least one nutrient source and optional additives to obtain a mixture, and optionally drying the mixture.

Abstract: Separation methods based on electrophoresis or chromatography that use a stationary phase including fibril cellulose.

Abstract: Disclosed is the use of a separation agent including fibril cellulose for phase separation, as well as to a method for the separation of at least one liquid phase from at least one phase selected from a second liquid phase, solid phase and semi-solid phase, where the method includes the steps of incorporating a separation agent including fibril cellulose to a mixture where separation of the phases is desired, followed by formation of phases and removing the phases.

Abstract: A composition for fermentation or microbial culture of gram-positive bacteria, includes fibril cellulose and at least one nutrient source including at least one carbon source, at least one nitrogen source, at least one phosphorus source, at least one mineral source and at least one trace element source.

Abstract: A drug delivery system for sustained delivery of bioactive agents, the system includes a matrix including nanofibrillated cellulose derived from plant based material and at least one bioactive agent, and at least one support selected from synthetic polymers, bio compounds and natural polymers. Also, methods for the manufacture of the system and methods of using it.

Abstract: The invention relates to a method for treating soil material. According to the invention, the soil material is treated by a mixture composition containing at least microfibrillated cellulose and water.

Abstract: A method for producing a superhydrophobic surface, which includes cellulosic material. The cellulosic material includes nanocellulose particles and the method includes adding the nanocellulose particles to a surface and hydrophobizing the nanocellulose particles with a modifier before, during and/or after the addition of the particles. The invention further relates to a hydrophobic coating.

Abstract: Method for fabricating fiber and film products and composites includes: introducing an aqueous gel of nanofibrillar cellulose into a volume of organic extraction agent miscible with water so that the aqueous gel is kept as a separate phase and forms one or several discrete physical entities containing the nanofibrillar cellulose within the phase; changing water with the organic extraction agent in said one or several discrete physical entities of nanofibrillar cellulose; and drying the nanofibrillar cellulose by removing the organic extraction agent from the one or several discrete physical entities of nanofibrillar cellulose. In the method the aqueous gel of nanofibrillar cellulose is introduced into the volume of organic extraction agent in the form of one or several elongated elements which form a fiber-like or ribbon-like or film-like product after drying.

Abstract: The present invention relates material that is useful in culturing and transferring cells as well as delivering cells. The material comprises plant derived cellulose nanofibers or derivatives thereof, wherein the cellulose nanofibers are in a form of a hydrogel or membrane. The invention also provides methods for producing these materials and compositions and uses thereof.

Abstract: The invention relates to a method for processing an aqueous gel of nanofibrillar cellulose by removing water from the aqueous gel by means of an organic solvent miscible with water. In the method: aqueous gel is introduced into a volume of organic solvent miscible with water in a controlled manner so that the aqueous gel is kept as a separate phase and forms discrete physical entities containing the nanofibrillar cellulose within the phase; water is changed with the organic solvent in said discrete physical entities of nanofibrillar cellulose; and the physical entities are separated from the volume of organic solvent.

Abstract: The present invention relates material that is useful in drug delivery compositions. The material comprises cellulose nanofibers and/or derivatives thereof, wherein the cellulose nanofibers are in a form of a hydrogel or membrane. The invention also provides methods for producing these materials and compositions and uses thereof.

Abstract: The invention relates to a method for treating soil material. According to the invention, the soil material is treated by a mixture composition containing at least microfibrillated cellulose and water.

Abstract: A method for preparing composite structure self-assemblies. Structural segments are formed, which connect to each other through binder material. The structural segments are combined with the binder material to produce structural segments having the binder adhered thereto. The structural segments are combined to a form a composite structure through self-assembly, where the structural segments join to each other through said binder.

Abstract: An agent for oilfield applications capable of being dispersed in water is nanofibrillar cellulose. The nanofibrillar cellulose mixed in water gives shear-thinning behavior to the composition, which is pumped to a subterranean oil-containing formation to aid in oil recovery.

Abstract: A method for manufacturing pulp. The manufactured pulp includes at least 30 w-% nanofibrillated cellulose material measured from the dried pulp. A raw material is introduced to a system. The raw material includes cellulose. At least one type of an optical brightening agent is dosed as a refining additive to the system. The raw material is refined in the presence of the dosed optical brightening agent in at least one pre-refining stage or fibrillation stage to form fibrillar cellulose material.