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Title: A study of rheological properties in sulfur-vulcanized CPE/NR blends
Authors: Nilobon Phewthongin
Pongdhorn Saeoui
Chakrit Sirisinha
Mahidol University
Thailand National Metal and Materials Technology Center
Keywords: Chemistry;Materials Science
Issue Date: 1-Jan-2005
Citation: Polymer Testing. Vol.24, No.2 (2005), 227-233
Abstract: The use of natural rubber (NR) for partly substituting elastomeric chlorinated polyethylene (CPE) was investigated. Sulfur curing was used to vulcanize NR phase in the blends. Rheological properties of CPE/NR blends were determined from two rheometers with different shear modes; the rate-controlled capillary rheometer and the oscillating die rheometer (Rubber Process Analyser, RPA2000). Results obtained reveal that the viscoelastic behavior of neat CPE and the blends with CPE as a major component is governed by the viscous response, which could be observed from the time-dependent properties. By contrast, the viscoelasticity of neat NR and blends with NR as a matrix is influenced strongly by vulcanization of the NR phase in the blends. The time-dependent properties become time-independent after the NR phase is cured by sulfur. Furthermore, results measured with these two rheometers could successfully be superimposed. © 2004 Elsevier Ltd. All rights reserved.
ISSN: 01429418
Appears in Collections:Scopus 2001-2005

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