HOME EUROPE GALLERY BRADGATE PARK CHARNWOOD LODGE

Hollow fibres


Many types of hollow cellulosic fibres occur in nature to protect seed pods and kapok is an example.Animal fibres such as types of wool are insulating because the fibres have scales and these trap air between the fibres. Similarly fibres can be made with highly crenulated surfaces which likewise trap air. Man made hollow fibres include viscose rayon produced by a wet spinning process but other synthetic fibres made by melt spining and hollow polyester is an example used in duvets and pillows where the air trapped in the fibre gives the filling excellent thermal insulation.Other hollow fibres can be made with a porous wall which allows them to be used in filtration and these find application in renal dialysis.


milkweed seed pod fibres courtesy www.encore3.com