Nilobon PhewthonginPongdhorn SaeouiChakrit SirisinhaMahidol UniversityThailand National Metal and Materials Technology Center2018-06-212018-06-212005-01-01Polymer Testing. Vol.24, No.2 (2005), 227-233014294182-s2.0-27544437048https://repository.li.mahidol.ac.th/handle/20.500.14594/16458The 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.Mahidol UniversityChemistryMaterials ScienceArticleSCOPUS10.1016/j.polymertesting.2004.08.005