US 8,575,045 B1 · Fiber modified with particulate through a coupling agent

Abstract

An article is provided that includes a polymeric fiber that has an excess number of surface active reactive moieties relative to the number of surface reactive moieties found on the fiber in a native state. A particle is bonded covalently to the fiber through an intermediate coupling agent. Multiple particles can be covalently bonded to the fiber, the multiple particles can be bonded uniformly or asymmetrically around the fiber diameter. A process for modifying a fiber includes creating surface activated reactive moieties thereon. The activated fiber is then exposed to a liquid solution containing a coupling agent to form a covalent bond. The coupling agent is also reacted with a particle in a liquid solution to form a covalent bond between the coupling agent and the particle. The coupling agent is covalently bonded to either a particle and then bonded to the fiber, or vice versa.

Claims30

Dependent claims

An article comprising a fabric having increased resistance to puncture wherein the fabric comprises:

a plurality of polymeric fibers, wherein said fibers have in a native state a number of native surface reactive moieties, said fibers being activated to have a plurality of surface activated reactive moieties, said plurality of surface activated reactive moieties being greater than the number of native surface reactive moieties;
a plurality of particles comprising particles having a size ranging from 2 to 1000 nanometers linear dimension along the long axis of the particle;
and
at least one coupling agent intermediate between a particle and a fiber, said coupling agent forming a first covalent bond to one of said plurality of surface activated reactive moieties and a second covalent bond to said particles to covalently bond a plurality of particles to a fiber,
wherein the plurality of particles that are covalently bound to the fibers of the fabric impart to the fabric increased resistance to puncture.

2 more elements

Dependencies are inferred from the claim text.

Fiber modified with particulate through a coupling agent

Life of this patent

Fiber modified with particulate through a coupling agent

Life of this patent

Abstract

Claims30