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.

An oxidation and grafting method for grafting a bioactive polymer, such as polyNaSS, onto an article, in particular a polymer or ceramic article. The method comprises a step of oxidation by ozonation and a step of grafting by radical polymerisation in a polymerisation station having a first reactor. The two steps of oxidation and grafting are carried out consecutively in different solutions in the reactor of the polymerisation station.

An oxidation and grafting method for grafting a bioactive polymer, such as polyNaSS, onto an article, in particular a polymer or ceramic article. The method comprises a step of oxidation by ozonation and a step of grafting by radical polymerisation in a polymerisation station having a first reactor. The two steps of oxidation and grafting are carried out consecutively in different solutions in the reactor of the polymerisation station.

The invention relates to a method for producing a laminar product suitable for manufacturing external covers of sanitary towels and nappies, formed by a polymeric coating deposited over the surface of a non-woven fabric substrate, as well as to the laminar product obtained using said method. The method comprises the following steps: obtaining adhesive polymeric mixtures, feeding the mixtures, in a melted state, to a curtain-type applicator, coating the substrate with the adhesive polymeric mixtures, and winding the laminar product obtained. The product obtained comprises a polymeric coating bonded to the non-woven fabric substrate, wherein the polymeric coating consists of an adhesive polymeric layer that has a reduced thickness, ranging between 1 and 10 micra, said product being suitable for medical and personal hygiene applications.

The invention relates to a method for producing a laminar product suitable for manufacturing external covers of sanitary towels and nappies, formed by a polymeric coating deposited over the surface of a non-woven fabric substrate, as well as to the laminar product obtained using said method. The method comprises the following steps: obtaining adhesive polymeric mixtures, feeding the mixtures, in a melted state, to a curtain-type applicator, coating the substrate with the adhesive polymeric mixtures, and winding the laminar product obtained. The product obtained comprises a polymeric coating bonded to the non-woven fabric substrate, wherein the polymeric coating consists of an adhesive polymeric layer that has a reduced thickness, ranging between 1 and 10 micra, said product being suitable for medical and personal hygiene applications.

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.

This disclosure provides a method for preparing a current collector. The method includes: (1) anchoring vinyl groups onto the surface of textiles through the silanization between hydroxyl groups and coupling agents; (2) synthesizing polyelectrolyte brushes through in-situ radical polymerization; and (3) obtaining catalyst ions on the polyelectrolyte brushes through ion-exchange and obtaining metal-coated layers through subsequent electroless deposition). The current collector according to the present disclosure has high electrical conductivity and excellent mechanical flexibility, and thus the lithium ion battery including the same is suitable for portable and wearable electronic devices.

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.

Described herein is a continuous process for modifying the properties of polyester and polyester based fibers, such as a poly(butylene terephthalate) (PBT) fiber, comprising subjecting the PBT fiber to alkaline hydrolysis, and optionally further comprising functionalizing the PBT fiber by solution grafting such as fluorination. The alkaline hydrolysis and optionally subsequent functionalization such as fluorination process can be continuous, following the melt blowing/spinning or spun-bonding process. Also described is a nonwoven PBT fiber mat obtained by the surface modification process. Further described is a filtration device comprising the nonwoven PBT fiber mat.