Abstract:
The present invention provides a method for the production of chemically derivatized nanocellulose, comprising the step of a. contacting a precursor cellulosic material with a chemically derivatizing composition to form a liquid reaction mixture, and b. chemically reacting the formed liquid reaction mixture, and c. subjecting the formed liquid reaction mixture to microfluidisation, wherein the steps b. and c. are carried out simultaneously.
Abstract:
A process for the preparation of particulate acylated biopolymer comprising anhydroglucose units, said process comprising the steps of a. dispersing an amount of particulate non-surface modified biopolymer comprising anhydroglucose units in an amount of a liquid alkenyl carboxylate, or of a mixture of two or more liquid alkenyl carboxylates, in order to form a first dispersion, b. adding a catalytic composition to the first dispersion such a to form a second dispersion, c. heating the second dispersion to a temperature above ambient temperature d. cooling the second dispersion to ambient temperature, e. isolating the obtained particulate acylated biopolymer, wherein the amount of a liquid alkenyl carboxylate, or a mixture of two or more liquid alkenyl carboxylates, corresponds to a molar excess of alkenyl carboxylate, the molar excess being defined with respect to the moles of anhydroglucoseunits comprised in the amount of the particulate non-surface modified biopolymer, and wherein the catalytic composition comprises an amount of one, or two or more, non-nucleophilic bases.
Abstract:
The present invention provides for method for spinning a reinforced cellulosic fibre or filament, comprising the steps of a. at a first point in time, forming a composite spinning solution comprising a first reinforcing particle, a cellulosic base material and a process solvent, and b. at a second point in time, extruding the spinning solution through an orifice into a regeneration fluid such as to form the reinforced cellulosic fibre or filament, wherein the composite spinning solution is formed by dissolving the cellulosic base material in the process solvent and distributively dispersing the first reinforcing particle in the process solvent.
Abstract:
The present invention provides a method for the production of chemically derivatized nanocellulose, comprising the step of a. contacting a precursor cellulosic material with a chemically derivatizing composition to form a liquid reaction mixture, and b. chemically reacting the formed liquid reaction mixture, and c. subjecting the formed liquid reaction mixture to microfluidisation, wherein the steps b. and c. are carried out simultaneously.
Abstract:
A process for the preparation of particulate acylated biopolymer comprising anhydroglucose units, said process comprising the steps of a. dispersing an amount of particulate non-surface modified biopolymer comprising anhydroglucose units in an amount of a liquid alkenyl carboxylate, or of a mixture of two or more liquid alkenyl carboxylates, in order to form a first dispersion, b. adding a catalytic composition to the first dispersion such a to form a second dispersion, c. heating the second dispersion to a temperature above ambient temperature d. cooling the second dispersion to ambient temperature, e. isolating the obtained particulate acylated biopolymer, wherein the amount of a liquid alkenyl carboxylate, or a mixture of two or more liquid alkenyl carboxylates, corresponds to a molar excess of alkenyl carboxylate, the molar excess being defined with respect to the moles of anhydroglucose units comprised in the amount of the particulate non-surface modified biopolymer, and wherein the catalytic composition comprises an amount of one, or two or more, non-nucleophilic bases
Abstract:
A process for the preparation of particulate acylated biopolymer comprising anhydroglucose units, said process comprising the steps of a. dispersing an amount of particulate non-surface modified biopolymer comprising anhydroglucose units in an amount of a liquid alkenyl carboxylate, or of a mixture of two or more liquid alkenyl carboxylates, in order to form a first dispersion, b. adding a catalytic composition to the first dispersion such a to form a second dispersion, c. heating the second dispersion to a temperature above ambient temperature d. cooling the second dispersion to ambient temperature, e. isolating the obtained particulate acylated biopolymer, wherein the amount of a liquid alkenyl carboxylate, or a mixture of two or more liquid alkenyl carboxylates, corresponds to a molar excess of alkenyl carboxylate, the molar excess being defined with respect to the moles of anhydroglucose units comprised in the amount of the particulate non-surface modified biopolymer, and wherein the catalytic composition comprises an amount of one, or two or more, non-nucleophilic bases