Auxetic polypropylene fibres: Part 1-Manufacture and characterisation

KL Alderson, A Alderson, G Smart… - Plastics, rubber and …, 2002 - Taylor & Francis
KL Alderson, A Alderson, G Smart, VR Simkins, PJ Davies
Plastics, rubber and composites, 2002Taylor & Francis
The term'auxetic'is applied to materials that possess a negative Poisson's ratio ν. The use of
auxetic polymers has been limited because of problems with deploying them in their
fabricated forms, ie as 10 mm diameter cylinders. This paper reports the successful
development of a processing route to produce a more useful and usable form of auxetic
polymeric material, namely fibres. A conventional polymer processing technique (melt
spinning) is the basis of this technique, with novel modifications. Video extensometry was …
Abstract
The term 'auxetic' is applied to materials that possess a negative Poisson's ratio ν. The use of auxetic polymers has been limited because of problems with deploying them in their fabricated forms, i.e. as 10 mm diameter cylinders. This paper reports the successful development of a processing route to produce a more useful and usable form of auxetic polymeric material, namely fibres. A conventional polymer processing technique (melt spinning) is the basis of this technique, with novel modifications. Video extensometry was used to measure the Poisson's ratio and a value of ν = -0.60±0.05 was obtained.
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