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Liquid transport and wicking in nonwoven materials. Edition No. 1

VDM Publishing House, February 2009, Pages: 288

Nonwoven materials are widely used in medical and
hygiene applications, and may demonstrate
significant anisotropic characteristics in liquid
transport. This study investigates the anisotropic
liquid transport in such materials, and establishes
a relationship between the structure and anisotropic
properties of liquid transport.
A comprehensive literature review of liquid
transport fibrous materials with particular
reference to its importance in the function of wound
dressings was conducted. A novel computer-integrated
instrument is described that measures the in-plane
liquid transmission in up to eight different
directions. Needle-punched and hydroentangled
fabrics with different structural parameters (fibre
type, fibre diameter, fabric porosity and fibre
orientation) were produced and characterised. The
anisotropic liquid transport properties of these
fabrics were tested using the new instrument. Unique
theoretical models were established to predict the
specific directional permeability of nonwoven
fabrics based on the main fabric structural
parameters (fibre diameter, fabric porosity and
fibre orientation distribution).

Ningtao, Mao.
Ningtao is a Lecturer in performance textiles in the University
of Leeds. He is interested in fluid transport and heat transfer
in textile structure. His work includes modeling structure-
property-performance relationship of fibrous materials and
engineering design of medical textiles, hygiene product, filter
media and functional clothing.