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Yarn spinning with a modern twist : how to create your own gorgeous yarns using a drop spindle
\"Want to spin your own beautiful yarn? Expert spinner Vanessa Kroening shows you how in this easy introduction to spinning with a drop spindle. No need to invest in an expensive spinning wheel. Expert spinner Vanessa Kroening shows you how to spin in this wonderfully accessible introduction to spinning with a drop spindle. Vanessa explains how to: clean and prepare fleece for spinning; what to look out for when choosing a fleece; how to card, blend colors, and make rolags and batts; use a drop spindle; ply your yarn and how to add beads, sequins and other elements, as well as how to dye your yarn. Spinning with a drop spindle isn't just fun - it's amazingly relaxing and highly creative too. You get to choose the type of fiber, and the colors and thickness of the yarn you make - you can even dye the yarn, and add beads, sequins and other embellishments to create your own unique yarns. A spindle is so compact, you can carry it around town with you and is not even necessary to have to spin. Be inspired and take your knitting, crochet, felting and weaving to a whole new level\"--Publisher's description.
BOOK
A Review on Current Nanofiber Technologies: Electrospinning, Centrifugal Spinning, and Electro‐Centrifugal Spinning
Nanofiber‐based products are widely used in the fields of public health, air/water filtration, energy storage, etc. The demand for nonwoven products is rapidly increasing especially after COVID‐19 pandemic. Electrospinning is the most popular technology to produce nanofiber‐based products from various kinds of materials in bench and commercial scales. While centrifugal spinning and electro‐centrifugal spinning are considered to be the other two well‐known technologies to fabricate nanofibers. However, their developments are restricted mainly due to the unnormalized spinning devices and spinning principles. High solution concentration and high production efficiency are the two main strengths of centrifugal spinning, but beaded fibers can be formed easily due to air perturbation or device vibration. Electro‐centrifugal spinning is formed by introducing a high voltage electrostatic field into the centrifugal spinning system, which suppresses the formation of beaded fibers and results in producing elegant nanofibers. It is believed that electrospinning can be replaced by electro‐centrifugal spinning in some specific application areas. This article gives an overview on the existing devices and the crucial processing parameters of these nanofiber technologies, also constructive suggestions are proposed to facilitate the development of centrifugal and electro‐centrifugal spinning. This review article forces on discussing the differences and relationships of three nanofiber technologies—electrospinning, centrifugal spinning, and electro‐centrifugal spinning. It mainly summarizes the existing devices and crucial processing parameters. The electro‐centrifugal spinning combines the strengths of electrospinning and centrifugal spinning, showing potentials in processing elegant nanofibers in large scale.
Journal Article
Homegrown flax and cotton : DIY guide to growing, processing, spinning & weaving fiber to cloth
\"A complete guide to growing flax and cotton in your home garden for the purpose of making clothing: how to grow, harvest, and prepare the fiber for spinning into yarn; how to spin cotton and flax/linen; the basics of weaving cloth; and suggestions on patterns and how to weave to create the pieces you need for clothing, and how to sew your woven pieces together\"-- Provided by publisher.
Book
Recent Progress in Regenerated Cellulose Fibers by Wet Spinning
Cellulose is the most abundant and “green” biomass resource on earth and gains tremendous attention. It is expected to become an alternative for traditional chemical and petroleum resources. This review describes the traditional solvents used for industrial processes, the non‐derivative organic solvents, and the aqueous solution systems, along with their dissolution mechanisms and development of fiber‐spinning processes. The problems associated with the industrial production of viscose fibers and cuprammonium fibers are also discussed. This paper focuses on the research status of regenerated cellulose fibers (RCFs) prepared with green and no‐pollution aqueous solutions and provides some effective strategies and methods for improving the mechanical strength of RCFs and promoting the implementation of industrial production. Lastly, the current developments of RCFs are summarized and prospected and it would serve as a guide for the developmental trend and research direction of RCFs in the future.
Journal Article
Riding high : how I kissed Soulcycle goodbye, co-founded Flywheel, and built the life I always wanted
\"Ruth Zukerman is the queen of spinning: she put the soul in SoulCycle and the fly in Flywheel. Recounting the pivotal moments that helped launch [her] as the breakout star of the boutique fitness world, [this] is a reminder that the greatest success stories often start in the unlikeliest of places\"-- Provided by publisher.
Book
Study of the effect of the process parameters on the forming limit in shear spinning processes
Shear spinning is an incremental metal forming technique with several advantages when compared with traditional sheet metal forming technologies, including low force requirements, simpler tools, and the capability to produce complex geometries. In this process, a large deformation can be applied due to the localized compressive and shear stresses, which enhance the ductility more than conventional forming processes. Therefore, the final part improves considerably its mechanical properties due to the associated work hardening. Nevertheless, the shear spinning technology involves a complex material flow that is highly dependent on the process parameters. In consequence, it is essential to study the effect of the different parameters on the formability of any material in the shear spinning process, but more importantly, to develop a method to predict the forming limit in terms of such parameters to get most of the process. In this work, a novel approach to study the formability in terms of the radial force was introduced. In this sense, shear spinning experiments on mild steel (DC-04) and martensitic stainless steel (AISI 420) were carried out, to derive forming limit maps as a function of the mandrel wall angle (30–7°), the spindle speed (400–1000 rpm), the feed rate (0.01–1.2 mm/rev), and the roller attack angle (0–30°). It was found that the maximum thickness reduction that the materials can withstand was 84% and 80% for the DC-04 and AISI 420, respectively. The results showed that the spindle speed presents a minor effect while the feed rate and radial force greatly affect the formability; therefore, a parametric equation was proposed to describe the boundary between the safe and failure zones in terms of the maximum thickness reduction. Regarding the mechanical properties, the maximum hardness increment regarding the as-received materials was 73% and 42% for the DC-04 and AISI 420, respectively.
Journal Article
Large-scale wet-spinning of highly electroconductive MXene fibers
Ti
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C
2
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MXene is an emerging class of two-dimensional nanomaterials with exceptional electroconductivity and electrochemical properties, and is promising in the manufacturing of multifunctional macroscopic materials and nanomaterials. Herein, we develop a straightforward, continuously controlled, additive/binder-free method to fabricate pure MXene fibers via a large-scale wet-spinning assembly. Our MXene sheets (with an average lateral size of 5.11 μm
2
) are highly concentrated in water and do not form aggregates or undergo phase separation. Introducing ammonium ions during the coagulation process successfully assembles MXene sheets into flexible, meter-long fibers with very high electrical conductivity (7,713 S cm
−1
). The fabricated MXene fibers are comprehensively integrated by using them in electrical wires to switch on a light-emitting diode light and transmit electrical signals to earphones to demonstrate their application in electrical devices. Our wet-spinning strategy provides an approach for continuous mass production of MXene fibers for high-performance, next-generation, and wearable electronic devices.
Large-scale production of fibers from two dimensional materials opens a pathway to promising applications. Here the authors report meter-long MXene fibers with high electrical conductivity that are fabricated via continuous wet spinning and demonstrated in electrical wires.
Journal Article
Aqueous spinning of robust, self-healable, and crack-resistant hydrogel microfibers enabled by hydrogen bond nanoconfinement
Robust damage-tolerant hydrogel fibers with high strength, crack resistance, and self-healing properties are indispensable for their long-term uses in soft machines and robots as load-bearing and actuating elements. However, current hydrogel fibers with inherent homogeneous structure are generally vulnerable to defects and cracks and thus local mechanical failure readily occurs across fiber normal. Here, inspired by spider spinning, we introduce a facile, energy-efficient aqueous pultrusion spinning process to continuously produce stiff yet extensible hydrogel microfibers at ambient conditions. The resulting microfibers are not only crack-insensitive but also rapidly heal the cracks in 30 s by moisture, owing to their structural nanoconfinement with hydrogen bond clusters embedded in an ionically complexed hygroscopic matrix. Moreover, the nanoconfined structure is highly energy-dissipating, moisture-sensitive but stable in water, leading to excellent damping and supercontraction properties. This work creates opportunities for the sustainable spinning of robust hydrogel-based fibrous materials towards diverse intelligent applications.
Hydrogels with homogenous structure are vulnerable to defects and cracks, and local mechanical failure occurs consequently. Here, the authors develop a spinning process to produce robust hydrogel microfibers with both crack insensitivity and self-healability.
Journal Article
Scalable one-step wet-spinning of triboelectric fibers for large-area power and sensing textiles
Textile-based electronic devices have attracted increasing interest in recent years due to their wearability, breathability, and comfort. Among them, textile-based triboelectric nanogenerators (T-TENGs) exhibit remarkable advantages in mechanical energy harvesting and self-powered sensing. However, there are still some key challenges to the development and application of triboelectric fibers (the basic unit of T-TENG). Scalable production and large-scale integration are still significant factors hindering its application. At the same time, there are some difficulties to overcome in the manufacturing process, such as achieving good stretchability and a quick production, overcoming incompatibility between conductive and triboelectric materials. In this study, triboelectric fibers are produced continuously by one-step coaxial wet spinning. They are only 0.18 mm in diameter and consist of liquid metal (LM) core and polyurethane (PU) sheath. Due to the good mechanical properties between them, there is no interface incompatibility of the triboelectric fibers. In addition, triboelectric fibers can be made into large areas of T-TENG by means of digital embroidery and plain weave. The T-TENGs can be used for energy harvesting and self-powered sensing. When they are fixed on the forearm can monitor various strokes in badminton. This work provides a promising strategy for the large-scale fabrication and large-area integration of triboelectric fibers, and promotes the development of wearable T-TENGs.
Journal Article
Melt-Spun Fibers for Textile Applications
Textiles have a very long history, but they are far from becoming outdated. They gain new importance in technical applications, and man-made fibers are at the center of this ongoing innovation. The development of high-tech textiles relies on enhancements of fiber raw materials and processing techniques. Today, melt spinning of polymers is the most commonly used method for manufacturing commercial fibers, due to the simplicity of the production line, high spinning velocities, low production cost and environmental friendliness. Topics covered in this review are established and novel polymers, additives and processes used in melt spinning. In addition, fundamental questions regarding fiber morphologies, structure-property relationships, as well as flow and draw instabilities are addressed. Multicomponent melt-spinning, where several functionalities can be combined in one fiber, is also discussed. Finally, textile applications and melt-spun fiber specialties are presented, which emphasize how ongoing research efforts keep the high value of fibers and textiles alive.
Journal Article