Bicomponent fiber

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Bicomponent fiber is made of two materials, utilizing desired properties of each material. [1] [2]

Contents

Such fibers can be created by extrusion spinning. [3] [4] [5]

One or both materials may remain in the finished product, or one material may be dissolved, leaving only one material remaining. For example, DuPont created the highly coiled elastic fiber called cantrese having two different nylon polymers side-by-side. [6]

Formats

Formats of bicomponent fibers include: [6]

Side-by-side

Extrusions are side-by-side within a single filament

Core-sheath

Extrusions with one material surrounding another

Segmented

Segmented like sections of a pie

Islands-in-the-sea

Islands-in-the-sea extrusions are also called matrix-fibril, because fibrils of one polymer are distributed in the matrix of another polymer. The matrix is known as the "sea", and the fibrils are known as islands. [7] The matrix is a soluble material that is washed away by a suitable solvent at some point in the manufacturing process. What remains at the microscopic level are bundles of thin parallel fibers, resulting in a fabric that is very soft and flexible.

Applications

Islands-in-the-sea can be melt blown to produce fabric such as Alcantara.

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Textile is an umbrella term that includes various fiber-based materials, including fibers, yarns, filaments, threads, different fabric types, etc. At first, the word "textiles" only referred to woven fabrics. However, weaving is not the only manufacturing method, and many other methods were later developed to form textile structures based on their intended use. Knitting and non-woven are other popular types of fabric manufacturing. In the contemporary world, textiles satisfy the material needs for versatile applications, from simple daily clothing to bulletproof jackets, spacesuits, and doctor's gowns.

<span class="mw-page-title-main">Fiber</span> Natural or synthetic substance made of long, thin filaments

Fiber or fibre is a natural or artificial substance that is significantly longer than it is wide. Fibers are often used in the manufacture of other materials. The strongest engineering materials often incorporate fibers, for example carbon fiber and ultra-high-molecular-weight polyethylene.

Aramid fibers, short for aromatic polyamide, are a class of heat-resistant and strong synthetic fibers. They are used in aerospace and military applications, for ballistic-rated body armor fabric and ballistic composites, in marine cordage, marine hull reinforcement, as an asbestos substitute, and in various lightweight consumer items ranging from phone cases to tennis rackets.

<span class="mw-page-title-main">Lamination</span> Technique of fusing layers of material

Lamination is the technique/process of manufacturing a material in multiple layers, so that the composite material achieves improved strength, stability, sound insulation, appearance, or other properties from the use of the differing materials, such as plastic. A laminate is a permanently assembled object created using heat, pressure, welding, or adhesives. Various coating machines, machine presses and calendering equipment are used.

Fibre-reinforced plastic is a composite material made of a polymer matrix reinforced with fibres. The fibres are usually glass, carbon, aramid, or basalt. Rarely, other fibres such as paper, wood, boron, or asbestos have been used. The polymer is usually an epoxy, vinyl ester, or polyester thermosetting plastic, though phenol formaldehyde resins are still in use.

Polybenzimidazole (PBI, short for poly[2,2’-(m-phenylen)-5,5’-bisbenzimidazole]) fiber is a synthetic fiber with a very high decomposition temperature. It does not exhibit a melting point, it has exceptional thermal and chemical stability, and it does not readily ignite. It was first discovered by American polymer chemist Carl Shipp Marvel in the pursuit of new materials with superior stability, retention of stiffness, and toughness at elevated temperature. Due to its high stability, polybenzimidazole is used to fabricate high-performance protective apparel such as firefighter's gear, astronaut space suits, high temperature protective gloves, welders’ apparel and aircraft wall fabrics. Polybenzimidazole has been applied as a membrane in fuel cells.

<span class="mw-page-title-main">Natural fiber</span> Fibers obtained from natural sources such as plants, animals or minerals without synthesis

Natural fibers or natural fibres are fibers that are produced by geological processes, or from the bodies of plants or animals. They can be used as a component of composite materials, where the orientation of fibers impacts the properties. Natural fibers can also be matted into sheets to make paper or felt.

<span class="mw-page-title-main">Nonwoven fabric</span> Sheet of fibers

Nonwoven fabric or non-woven fabric is a fabric-like material made from staple fibre (short) and long fibres, bonded together by chemical, mechanical, heat or solvent treatment. The term is used in the textile manufacturing industry to denote fabrics, such as felt, which are neither woven nor knitted. Some non-woven materials lack sufficient strength unless densified or reinforced by a backing. In recent years, non-wovens have become an alternative to polyurethane foam.

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<span class="mw-page-title-main">Nanofabrics</span> Textiles engineered with small particles that give ordinary materials advantageous properties

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<span class="mw-page-title-main">Biocomposite</span>

A biocomposite is a composite material formed by a matrix (resin) and a reinforcement of natural fibers. Environmental concern and cost of synthetic fibres have led the foundation of using natural fibre as reinforcement in polymeric composites. The matrix phase is formed by polymers derived from renewable and nonrenewable resources. The matrix is important to protect the fibers from environmental degradation and mechanical damage, to hold the fibers together and to transfer the loads on it. In addition, biofibers are the principal components of biocomposites, which are derived from biological origins, for example fibers from crops, recycled wood, waste paper, crop processing byproducts or regenerated cellulose fiber (viscose/rayon). The interest in biocomposites is rapidly growing in terms of industrial applications and fundamental research, due to its great benefits. Biocomposites can be used alone, or as a complement to standard materials, such as carbon fiber. Advocates of biocomposites state that use of these materials improve health and safety in their production, are lighter in weight, have a visual appeal similar to that of wood, and are environmentally superior.

<span class="mw-page-title-main">Technical textile</span> Textile product valued for its functional characteristics

"Technical textile" refers to a category of textiles specifically engineered and manufactured to serve functional purposes beyond traditional apparel and home furnishing applications. These textiles are designed with specific performance characteristics and properties, making them suitable for various industrial, medical, automotive, aerospace, and other technical applications. Unlike conventional textiles used for clothing or decoration, technical textiles are optimized to offer qualities such as strength, durability, flame resistance, chemical resistance, moisture management, and other specialized functionalities to meet the specific needs of diverse industries and sectors.

<span class="mw-page-title-main">Bamboo textile</span> Textile made from various parts of the bamboo plant

Bamboo textile is any cloth, yarn or clothing made from bamboo fibres. While historically used only for structural elements, such as bustles and the ribs of corsets, in recent years different technologies have been developed that allow bamboo fibre to be used for a wide range of textile and fashion applications.

Carbon fiber-reinforced polymers, carbon-fibre-reinforced polymers, carbon-fiber-reinforced plastics, carbon-fiber reinforced-thermoplastic, also known as carbon fiber, carbon composite, or just carbon, are extremely strong and light fiber-reinforced plastics that contain carbon fibers. CFRPs can be expensive to produce, but are commonly used wherever high strength-to-weight ratio and stiffness (rigidity) are required, such as aerospace, superstructures of ships, automotive, civil engineering, sports equipment, and an increasing number of consumer and technical applications.

Three-dimensional composites use fiber preforms constructed from yarns or tows arranged into complex three-dimensional structures. These can be created from a 3D weaving process, a 3D knitting process, a 3D braiding process, or a 3D lay of short fibers. A resin is applied to the 3D preform to create the composite material. Three-dimensional composites are used in highly engineered and highly technical applications in order to achieve complex mechanical properties. Three-dimensional composites are engineered to react to stresses and strains in ways that are not possible with traditional composite materials composed of single direction tows, or 2D woven composites, sandwich composites or stacked laminate materials.

Hydroentanglement is a bonding process for wet or dry fibrous webs made by either carding, airlaying or wet-laying, the resulting bonded fabric being a nonwoven. It uses fine, high pressure jets of water which penetrate the web, hit the conveyor belt and bounce back causing the fibres to entangle.

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Melt blowing is a conventional fabrication method of micro- and nanofibers where a polymer melt is extruded through small nozzles surrounded by high speed blowing gas. The randomly deposited fibers form a nonwoven sheet product applicable for filtration, sorbents, apparels and drug delivery systems. The substantial benefits of melt blowing are simplicity, high specific productivity and solvent-free operation. Choosing an appropriate combination of polymers with optimized rheological and surface properties, scientists have been able to produce melt-blown fibers with an average diameter as small as 36 nm.

<span class="mw-page-title-main">Automotive textile</span> Textiles used in a variety of applications in the automotive industry

An Automotive textile is a technical textile used in the transportation and automotive industries. The choice of type of automotive textile focuses on aspects of safety, comfort, and aesthetics. These textiles have variety of applications in the automotive industry, such as interior fittings, safety features, sound insulation, and tire reinforcement.

<span class="mw-page-title-main">3D textiles</span> Three-dimensional fibers, yarns and fabrics

3D textiles are three-dimensional structures made with different manufacturing methods such as weaving, knitting, braiding, or nonwoven, or made with alternative technologies. 3D textiles are produced with three planar geometry, opposed to 2D textiles that are made on two planes. The weave in 2D textiles is perpendicular. The yarn is fed along two axis: length (x-axis) and width (y-axis), while 3D textiles also have a perpendicular weave, but they have an extra yarn with an angular feeding (z-axis) which creates thickness. 3D weaves are orthogonal weave structures, multilayer structures, and angle interlocks. 3D textiles have more manufacturing opportunities, various properties, and a broader scope of applications. These textiles have a wide range of applications, but they are most commonly used where performance is the primary criterion, such as technical textiles. Composite materials, manufacturing is one of the significant areas of using 3D textiles.

A blend is a mixture of two or more fibers. In yarn spinning, different compositions, lengths, diameters, or colors may be combined to create a blend. Blended textiles are fabrics or yarns produced with a combination of two or more types of different fibers, or yarns to obtain desired traits and aesthetics. Blending is possible at various stages of textile manufacturing. The term, blend, refers to spun fibers or a fabric composed of such fibers. There are several synonymous terms: a combination yarn is made up of two strands of different fibers twisted together to form a ply; a mixture or mixed cloth refers to blended cloths in which different types of yarns are used in warp and weft sides.

References

  1. "Bicomponent Fibers—Classification of Bicomponent Fibers—Production of Bicomponent Fibers—Application of Bicomponent Fibers". Textile Learner. Retrieved August 1, 2019.
  2. Jeffrey S. Dugan (July–August 2010). "Specialty Markets — Bicomponent Fibers". Textile World. Textile Industries Media Group. Retrieved August 1, 2019.
  3. US 7622188,Kamiyama, Mie&Numata, Miyuki,"Islands-in-sea type composite fiber and process for producing the same", assigned to Teijin Fibers Ltd.
  4. Janet Bealer Rodie (September 16, 2013). "Quality Fabric Of The Month: A Sea Change For Microfibers". Textile World. Textile Industries Media Group. Retrieved July 31, 2019.
  5. Soltani, Iman; Macosko, Christopher W. (2018). "Influence of rheology and surface properties on morphology of nanofibers derived from islands-in-the-sea meltblown nonwovens". Polymer. 145: 21–30. doi: 10.1016/j.polymer.2018.04.051 .
  6. 1 2 "MODULE 7. SMART/FUNCTIONAL SPECIALITY FIBRES—7.3 Bicomponent and Micro Fibres (2 Lectures)—Bicomponent Fibres". National Programme on Technology Enhanced Learning (NPTEL). Archived from the original on June 3, 2019. Retrieved July 31, 2019.
  7. Mbwana Suleiman Ndaro; Xiang-yu Jin; Ting Chen; Chong-wen Yu (2007). "Splitting of Islands-in-the-Sea Fibers (PA6/COPET) During Hydroentangling of Nonwovens". Journal of Engineered Fibers and Fabrics. 2 (4). doi: 10.1177/155892500700200402 . S2CID   34868300.