Solid-state branching and/or crosslinking of aliphatic polyamide or polyester articles is achieved using a topical approach. A surface of the article is coated with a composition that includes a polyene and a free radical initiator. The article and applied coating are then heated to induce branching and/or crosslinking in the polyamide or polyester. This is performed below the crystalline melting temperature of the polyamide or polyester, or in the case of a fabric, below the melting temperature of the fibers in the fabric. Fabrics treated in this manner exhibit reduced or even no dripping in vertical flame tests.

There is provided a method of treating textile fibres including: a) providing a polymeric precursor including a diallyl amide cationic compound and a corresponding counter ion; b) either (i) coating the textile fibres with the polymeric precursor and polymerising the polymeric precursor to form a polymeric coating, or (ii) polymerising the polymeric precursor and contacting the polymerised polymeric precursor with the textile fibres to form a polymeric coating on the textile fibres. There is also provided a composite structure including a polymeric coating formed from the polymeric precursors of the present invention.

A fire protective glove includes a palm portion and a back portion. The palm portion includes a polymer impregnated layer constructed of aramid fibers, leather, or a combination thereof; and a palm moisture barrier layer that is interior to the polymer impregnated layer, the palm moisture barrier layer being constructed of polyurethane, polytetrafluroethylene, aramid fibers, or a combination thereof. The back portion includes a first back protective layer constructed of aramid fibers, leather, or a combination thereof; and a second back protective layer that is interior to the first back protective layer, the second back protective layer being constructed of aramid fibers, modacrylic, or a combination thereof.

A blend composition includes polyamide fiber and denatured collagen. The polyamide fiber content is 97-99.9 parts by weight in the blend composition. The denatured collagen content is 0.1-3 parts by weight in the blend composition. The denatured collagen has a first polypeptide, a second polypeptide, and a third polypeptide. The amide groups of the first polypeptide, the second polypeptide, and the third polypeptide are linked with the amide groups of the polyamide fiber through hydrogen bond formation. A method of manufacturing a blend composition is provided herein.

A blend composition includes polyamide fiber and denatured collagen. The polyamide fiber content is 97-99.9 parts by weight in the blend composition. The denatured collagen content is 0.1-3 parts by weight in the blend composition. The denatured collagen has a first polypeptide, a second polypeptide, and a third polypeptide. The amide groups of the first polypeptide, the second polypeptide, and the third polypeptide are linked with the amide groups of the polyamide fiber through hydrogen bond formation. A method of manufacturing a blend composition is provided herein.

Solid-state branching and/or crosslinking of aliphatic polyamide or polyester articles is achieved using a topical approach. A surface of the article is coated with a composition that includes a polyene and a free radical initiator. The article and applied coating are then heated to induce branching and/or crosslinking in the polyamide or polyester. This is performed below the crystalline melting temperature of the polyamide or polyester, or in the case of a fabric, below the melting temperature of the fibers in the fabric. Fabrics treated in this manner exhibit reduced or even no dripping in vertical flame tests.

A method of manufacturing a blend composition, comprising: providing caprolactam; heating the caprolactam to a temperature of about 215° C. to about 280° C. for polymerization to form polycaprolactam; and mixing the polycaprolactam at the temperature of about 215° C. to about 280° C. with collagen, such that the collagen is denatured by heat, wherein the denatured collagen has a first polypeptide, a second polypeptide, and third polypeptide, and amide groups of the first polypeptide, the second polypeptide, and the third polypeptide are linked with amide groups of the polycaprolactam through hydrogen bond formation, thereby the blend composition is formed.

A method of manufacturing a blend composition, comprising: providing caprolactam; heating the caprolactam to a temperature of about 215° C. to about 280° C. for polymerization to form polycaprolactam; and mixing the polycaprolactam at the temperature of about 215° C. to about 280° C. with collagen, such that the collagen is denatured by heat, wherein the denatured collagen has a first polypeptide, a second polypeptide, and third polypeptide, and amide groups of the first polypeptide, the second polypeptide, and the third polypeptide are linked with amide groups of the polycaprolactam through hydrogen bond formation, thereby the blend composition is formed.

A fire protective glove includes a palm portion and a back portion. The palm portion includes a polymer impregnated layer constructed of aramid fibers, leather, or a combination thereof; and a palm moisture barrier layer that is interior to the polymer impregnated layer, the palm moisture barrier layer being constructed of polyurethane, polytetrafluroethylene, aramid fibers, or a combination thereof. The back portion includes a first back protective layer constructed of aramid fibers, leather, or a combination thereof; and a second back protective layer that is interior to the first back protective layer, the second back protective layer being constructed of aramid fibers, modacrylic, or a combination thereof.

There is provided a method of treating textile fibres including: a) providing a polymeric precursor including a diallyl amide cationic compound and a corresponding counter ion; b) either (i) coating the textile fibres with the polymeric precursor and polymerising the polymeric precursor to form a polymeric coating, or (ii) polymerising the polymeric precursor and contacting the polymerised polymeric precursor with the textile fibres to form a polymeric coating on the textile fibres. There is also provided a composite structure including a polymeric coating formed from the polymeric precursors of the present invention.