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Original Research
The use of parallel plate rheology to determine the intrinsic viscosity of polyethylene terephthalate
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie | Vol 24, No 4 | a182 |
DOI: https://doi.org/10.4102/satnt.v24i4.182
| © 2005 Copyright Status: Not provided. Contact Holding Institution to verify copyright status. Rights Holder: SA Akademie vir Wetenskap en Kuns
Submitted: 23 September 2005 | Published: 23 September 2005
Submitted: 23 September 2005 | Published: 23 September 2005
About the author(s)
O. C. Vorster, Departement Polimeertegnologie, Tshwane Universiteit van Tegnologie, South AfricaFull Text:
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Abstract
Determining the intrinsic viscosity of polyethylene terephthalate is complicated by the fact that there are only two methods available at present. The first method is based on solution viscosity. The toxicity of the solvent, as well as the time it takes to carry out an analysis, results in this method not being very practical for everyday use. The second method is limited in its application due to the complexity and availability of the equipment in South Africa. In the present study an alternative method, based on parallel plate rheology, is presented. This method overcomes the problems mentioned and results obtained with it are compared with results obtained with the methods in use at present.
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