The present invention relates to a process for producing a compacted material comprising the steps of providing a powder material and a polymer binder, simultaneously or subsequently feeding the powder material and the polymer binder into a high speed mixer unit, mixing the powder material and the polymer binder in the high speed mixer unit until formation of a compacted material, and reducing the temperature of the obtained compacted material below the melting point or glass transition temperature of the polymer binder.

The method for producing a polyimide fiber includes a coagulation step of forming a polyimide precursor fiber by extruding a polyimide precursor solution containing a polyimide precursor and a compound having an acid dissociation constant (pKa) of a conjugate acid in water at 25° C. of 6.0 to 10 inclusive and an octanol-water partition coefficient (Log P) at 25° C. of −0.75 to 0.75 inclusive into a poor solvent or nonsolvent for the polyimide precursor; and a heat drawing step of forming the polyimide fiber by drawing the polyimide precursor fiber while heating same. The polyimide fiber of the present disclosure has a physical property such that the coefficient of thermal expansion thereof is in the range of −15 ppm/K to 0 ppm/K inclusive.

Disclosed is a fiber for artificial hair containing a polycondensation-based polymer and a crosslinking agent. Also disclosed is a headdress article including the fiber for artificial hair.

Composites based on a polymer and a mixture of proteins derived from a MaSp (major ampullate spidroin) protein are provides. Further, methods for preparation of same, and method of use of the composites are provided.

Composites based on a polymer and a mixture of proteins derived from a MaSp (major ampullate spidroin) protein are provides. Further, methods for preparation of same, and method of use of the composites are provided.

A method for preparing an anti-bacterial and anti-ultraviolet multifunctional chemical fiber includes: dissolving several soluble metal salts and a polymer complexing dispersant into water to prepare an aqueous solution; adding into a polymer monomer; reacting under microwave or hydrothermal action to obtain a polymer monomer containing multifunctional nano oxides; adding the polymer monomer with other monomer, catalyst, initiator, stabilizer, and the like into a polymerization reactor; and carrying out esterification, polycondensation or copolymerization to obtain a polymer melt, and carrying out spinning or ribbon casting and granule cutting to obtain an anti-bacterial and anti-ultraviolet multifunctional chemical fiber or masterbatch chips. By generating nano metal oxides in the monomer in situ before the polymerization reaction, small particle sizes and dispersibility of the nano metal oxide are ensured; the chemical fiber has efficient, durable antibacterial and anti-ultraviolet functions and is free of metal ion precipitation.

A method for preparing an anti-bacterial and anti-ultraviolet multifunctional chemical fiber includes: dissolving several soluble metal salts and a polymer complexing dispersant into water to prepare an aqueous solution; adding into a polymer monomer; reacting under microwave or hydrothermal action to obtain a polymer monomer containing multifunctional nano oxides; adding the polymer monomer with other monomer, catalyst, initiator, stabilizer, and the like into a polymerization reactor; and carrying out esterification, polycondensation or copolymerization to obtain a polymer melt, and carrying out spinning or ribbon casting and granule cutting to obtain an anti-bacterial and anti-ultraviolet multifunctional chemical fiber or masterbatch chips. By generating nano metal oxides in the monomer in situ before the polymerization reaction, small particle sizes and dispersibility of the nano metal oxide are ensured; the chemical fiber has efficient, durable antibacterial and anti-ultraviolet functions and is free of metal ion precipitation.

The disclosure generally relates to filaments and in particular, filaments for use in fused filament fabrication to prepare 3D printed articles. The filaments comprising a polymer composition, said polymer composition comprising: a) about 5 wt. % to about 60 wt. % of a thermoplastic polymer A having a melting peak temperature greater than 40° C.; b) about 95 wt. % to about 40 wt. % of a thermoplastic polymer B having a melting peak temperature greater than 20° C.; c) optionally from about 0.1 to 3 wt. % of a viscosity modifier; wherein: the melting peak temperature of thermoplastic polymer A is at least 20° C. greater than the melting peak temperature of thermoplastic polymer B; thermoplastic polymer A is dispersed in thermoplastic polymer B; and the polymer composition has a melt index of at least 0.1 g/10 minutes using a 10 kg weight measured according to ASTM D1238-13 at a temperature which is less than the melting peak temperature of thermoplastic polymer A and which is greater than the melting peak temperature of thermoplastic polymer B.

The present invention relates to the field of biomaterials, more particularly to the field of poly(alkyl cyanoacrylate) based nano- and microfibers. The present invention provides a novel method for producing ready-to-use poly(alkyl cyanoacrylate) based nano/microfibers, wherein the method comprises electrospinning of poly(alkyl cyanoacrylate) homopolymers or copolymers generated by anionic polymerization of alkyl cyanoacrylate monomers or oligomers and characterized by a specific polydispersity index. Accordingly, the present invention also provides novel ready-to-use nano/microfibers obtainable by the method as well as uses thereof, including (therapeutic) biomedical applications such as wound healing, drug delivery and tissue regeneration and engineering.

The present invention relates to the field of biomaterials, more particularly to the field of poly(alkyl cyanoacrylate) based nano- and microfibers. The present invention provides a novel method for producing ready-to-use poly(alkyl cyanoacrylate) based nano/microfibers, wherein the method comprises electrospinning of poly(alkyl cyanoacrylate) homopolymers or copolymers generated by anionic polymerization of alkyl cyanoacrylate monomers or oligomers and characterized by a specific polydispersity index. Accordingly, the present invention also provides novel ready-to-use nano/microfibers obtainable by the method as well as uses thereof, including (therapeutic) biomedical applications such as wound healing, drug delivery and tissue regeneration and engineering.