Advanced Materials Research Vols. 332-334

Abstract: Electrospun poly(ε-caprolactone) (PCL) fibers containing silver nanoparticles were successfully prepared from PCL solutions added silver collide. The silver collide were obtained by N, N-dimethylformamide (DMF) reducing silver nitrate (AgNO3). The effects of PCL concentration and the content of silver nanoparticles on composite fibers morphology were characterized by field-emission scanning electron microscopy (FESEM). The existence of Ag nanoparticles on the electrospun fibers was approved by X-Ray diffraction (XRD). Simultaneously, the contact angles of fiber membranes were measured. The results indicated that uniform fibers were obtained when PCL concentration was 9wt%, the average diameter of fiber was significantly decreased as increasing the amount of silver collide, and Ag nanoparticles were successfully incorporated into the PCL fibers.

Abstract: Poly (lactic acid) (PLA) as a thermoplastic and biodegradable material holds good prospect in medical, agricultural, apparel, upholstery, hygiene, and other applications in the form of fiber. Among them, the nonwoven produced with PLA fiber is one of the most important forms. In this paper, the biodegradable properties of PLA fiber were reviewed. Moreover, some manufacturing processes of the biodegradable PLA product, such as spunlaced, spunbonded thermal, spunbonded needle punched, melt-blown were also summarized. It also draws some conclusions about the current problems and the prospect.

Abstract: The purpose of this paper was to treat the PLA spunlaced non-wovens by finishing agents of organic fluorin FG-910, measure the properties of resistance to water, alcohol and blood of the fabrics by using different test methods. The experimental results show that PLA spunlaced non-wovens treated by FG-910 have excellent resistance to water, alcohol and blood,furthermore, there are no harmful effects on their strength,breathability,moisture permeability.

Abstract: Meltblown elastic nonwovens are produced with thermoplastic elastomers by meltblown process. The elastic meltblown web is composed of microfibers, so it has big specific surface-area, good insulator and filtration. And it has improved the elasticity of traditional meltblowm web as well. In addition with nonwoven composite technology, meltblown elastic nonwovens combining with other material’s characteristics are applied widely in medical treatment, costumes, electronic industry, dug industry and other fields. The principle of elastic nonwovens with meltblown tehcnology and recent research progress are briefly overviewed. The aim of this paper is providing a reference for further study on this technology in china. Meanwhile put forward the direction of recent study on elastic meltblown webs and forecast the bright future of elastic nonwoven with meltblown technology.

Abstract: Aramids fibers are among the best known of the high-performance, synthetic, organic fibers. Needle-punched nonwoven fabrics with various structures were manufactured and their physical properties, structure, thermal insulation property and acoustic absorption property were examined. The results show that the aramid fiber needle-punched nonwoven fabrics possess good performance at thermal and acoustic insulation besides light mass and inherent flame-resistant.

Abstract: Nanofibers, with its excellent performance, have played a significant role in the fields of filtration materials, medical materials, biomaterials, etc. In this work, a novel electrospinning technique, carter-like electrospinning, was presented and used to produce nanofibers. Multiple jets, which have the potential to increase the yield of nanofibers, were found in our experiments. The geometric properties, such as fiber diameter, diameter distribution, and surface morphology of the produced Nanofibers via this process, were characterized using a field emission scanning electron microscopy (FESEM). The results showed that the diameters of nanofibers ranged from several nanometers to one micron, and the nanofibers had average diameter of 84-550nm.

Abstract: This paper measured the breaking strength of nonwoven shopping bag, which sampled from 5 kinds of fabric weight with 5 kinds of seam density and 2 types of seam methods. Based on the result of orthogonal experiment，the load bearing model is established by three-element non-linear model with two variables—fabric weight and elongate ratio of the nonwoven. Model verification shows the maximum relative error is lower than 10%. This model is proper to be applied to calculate the load bearing of 100% Polypropylene nonwoven shopping bag.

Abstract: This article discusses the recent state of the raw materials used in electro-spun and the specific application of several common materials of electrostatic spinning, such as PVDF, PANI, PBS, biodegradable and renewable biological polymer and metal oxide.

Abstract: Perfect walking posture has been of enormous significance for fashion model. Models with good walking postures can convey the fashion design to the audience clearly and further attract them. This paper studied and analyzed the basic walking postures of famous female fashion models by methods of video and image analysis. Through analysis of measurements from videos and images, some basic principles of walking posture were acquired. At last, this paper fabricated a virtual model with a group of standard walking postures in a gait cycle by using 3D software.

Abstract: Dyeing kinetics of natural dyes extracted from leaves of henna on protein fiber fabric was studied, dyeing rate curve, the diffusion coefficient and the half dyeing time was obtained. The results showed that, at the same time and the same dyeing conditions, higher equilibrium dye uptake of wool fiber was achieved than that of the silk fabric. It indicated that wool fibers has better dyeing properties than that of silk fiber. A larger diffusion coefficient, the shorter half dyeing time of dyestuff on silk fabric than that on wool fabric illustrated that the initial dyeing rate of silk fabric is higher than wool fabric.