Phosphoethanolamine cellulose and methods of making and using it are disclosed. In particular, the invention relates to a method of producing a phosphoethanolamine cellulose biosynthetically using a BcsG phosphoethanolamine transferase for cellulose modification. Recombinant constructs encoding BcsG are described, including constructs encoding BcsG by itself or in combination with BcsE and BcsF, which increase the extent of cellulose modification and the amount of modified cellulose produced. Production of phosphoethanolamine cellulose in cell culture and derivatization of phosphoethanolamine cellulose are also described.

The invention presented herein relates to bacterial cellulose (BC) suspensions, and methods of production and uses of the same. In particular, the invention relates to BC suspensions suitable for coating applications.

Solution casting a nanostructure. Preparing a template by ablating nanoholes in a substrate using single-femtosecond laser machining. Replicating the nanoholes by applying a solution of a polymer and a solvent into the template. After the solvent has substantially dissipated, removing the replica from the substrate.

Solution casting a nanostructure. Preparing a template by ablating nanoholes in a substrate using single-femtosecond laser machining. Replicating the nanoholes by applying a solution of a polymer and a solvent into the template. After the solvent has substantially dissipated, removing the replica from the substrate.

Solution casting a nanostructure. Preparing a template by ablating nanoholes in a substrate using single-femtosecond laser machining. Replicating the nanoholes by applying a solution of a polymer and a solvent into the template. After the solvent has substantially dissipated, removing the replica from the substrate.

A downhole tool or component thereof comprising a cellulosic derivative, wherein the cellulosic derivative is capable of at least partially degrading in a wellbore environment, thereby at least partially degrading the downhole tool or component thereof. Methods of introducing the downhole tool into a wellbore environment, performing a downhole operation, and at least partially degrading the downhole tool or component therein in the wellbore.

A downhole tool or component thereof comprising a cellulosic derivative, wherein the cellulosic derivative is capable of at least partially degrading in a wellbore environment, thereby at least partially degrading the downhole tool or component thereof. Methods of introducing the downhole tool into a wellbore environment, performing a downhole operation, and at least partially degrading the downhole tool or component therein in the wellbore.

Described herein are methods for chemical modification of nitrocellulose to generate lyophobic properties which are useful in propellant compositions. Such methods include the steps of: a) dissolving neat nitrocellulose in an organic solvent; b) adding a silyl based isocyanate and a catalyst to the solution; (d) stirring the solution in a moisture free environment; e) hydrolyzing the solution by exposing said solution to moisture; and (e) adding fluorinated oxysilane. The modified nitrocellulose retains its energetic properties while exhibiting high water and organic solvent phobicity, effectively functioning as a barrier to migration or diffusion of liquid components in propellant compositions.

Described herein are methods for chemical modification of nitrocellulose to generate lyophobic properties which are useful in propellant compositions. Such methods include the steps of: a) dissolving neat nitrocellulose in an organic solvent; b) adding a silyl based isocyanate and a catalyst to the solution; (d) stirring the solution in a moisture free environment; e) hydrolyzing the solution by exposing said solution to moisture; and (e) adding fluorinated oxysilane. The modified nitrocellulose retains its energetic properties while exhibiting high water and organic solvent phobicity, effectively functioning as a barrier to migration or diffusion of liquid components in propellant compositions.

The present disclosure relates to a continuous extrusion process for producing a celluloid article including several steps and a celluloid article prepared by the continuous extrusion process.