Crosslinking of Sulfonated Cotton Cellulose: Part III: Agent Distribution and Reaction Kinetics

Sulfonated and unsulfonated cotton fabrics are finished with DMDMDHEU to study the agent distribution and reaction kinetics. The surface concentration of the crosslinking agent on the finished fabrics is significant for sulfonated cottons. Specific reaction rate constants for sulfonated cottons are higher than for the unsulfonated fabric,..

[공지]시공자 입찰결과 발표

시공자 입찰결과 발표 KOTITI 강남사옥 시공자 입찰 결과를 하기와 같이 공지합니다.                                             1. 우선협상자 : (주)GS건설        상기 입찰자는 본소 강남사옥 신축공사 우선협상자로서 세부 협의과정을 진행하게 됩니다. 문의사항은 KOTITI 경영기획본부(02-3451-7014) 또는 건설사업관리단(070-7836-4687)으..

Through-Air Drying of Unbacked Tufted Carpets

Magnetic resonance imaging (MRI) and a pilot-scale laboratory through-air dryer are used to study through-air drying of unbacked tufted nylon carpets. MRI is used to study the effect of the vacuum extraction procedure on local moisture distribution within the carpet and to measure local moisture profiles during through-air drying where ai..

Blood Flow in a Polyester Textile Vascular Prosthesis: Experimental and Numerical Study

Textile cardiovascular prostheses are woven or knitted structures made of synthetic filaments. They present particular mechanical properties linked to the nature of yarn interlacing and the wavy form of their walls. Steady and pulsatile blood flows are studied in such a prosthesis. The results show that a prosthesis cannot be considered a..

A Geometric Approach to Fibrous Structures for Biological Soft Tissue Replacement

The use of artificial (man-made) materials to replace lost or damaged biological soft tissue has drawbacks, because the mechanical behavior of artificial materials fails to adequately mimic that of soft tissue such as ligaments, tendons, and skin. These natural materials exhibit large initial extension at small load, followed by a change ..

Characterizing Structural Changes in Point-Bonded Nonwoven Fabrics During Load-Deformation Experiments

Current efforts to establish links between processing conditions and the structure and properties of nonwoven fabrics in general, and for point-bonded (spot-bonded) nonwovens in particular, would be served significantly by in situ experimental visualization and measurement of the structural changes that occur during controlled deformation..

Effect of Bonding Temperature on Load-Deformation Structural Changes in Point-Bonded Nonwoven Fabrics

We have recently reported on in situ experimental visualization and measurement of the structural changes that occur during controlled deformation experiments for a point- bonded nonwoven fabric. This paper extends that work to a series of point-bonded nonwovens with different processing conditions. We demonstrate that changes in the stru..

Air Permeability of Multilayered Nonwoven Fabrics: Comparison of Experimental and Theoretical Results

The experimental and theoretical air permeabilities of twelve multilayered. needle punched nonwoven samples are compared in this paper. Samples are made from ceramic and glass with varying layer structures. The density and diameter of all fibers used to make individual webs are approximately the same, and so the fabric samples made from t..

A New Concept in Cooler Design for False-Twist Texturing Systems

In false twist texturing, yarns are bulked by the sequential operations of twisting, heating, and cooling. The current speed for false twist texturing is limited by the early onset of threadline instability. It is well known that there is a potential to increase speeds by reducing the length of each element of the process. This paper desc..

Effect of Hydrophile-Lipophile Balance Values of Surfactant Mixtures on the Detergency of Oil-Soiled Single Fibers

The detergency of Lyocell and polyester fibers soiled with octadecane or oleic acid is investigated with anionic-nonionic surfactant mixture solutions of various hydrophile- lipophile balance (HLB) values. The HLB values for anionic-nonionic surfactant mixtures, sodium dodecyl benzene sulfate (LAS)-nonyl phenol ethoxylate (NPE), 1-hexadec..