Raman investigation of thermoplastic vulcanizates based on hydrogenated natural rubber/polypropylene blends |
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| Institution: | 1. Institut des Molécules et des Matériaux du Mans, IMMM –UMR-CNRS 6283, Université du Maine, Avenue Olivier Messiaen, 72085 Le Mans France;2. Department of Rubber Technology and Polymer Science, Faculty of Science and Technology, Prince of Songkla University, Pattani Campus, 94000 Thailand;3. Department of Chemistry, Faculty of Science, Mahidol University, 10400 Thailand;4. Rubber and Polymer Technology Program, Faculty of Science and Technology, Songkhla Rajabhat University, 90000 Thailand;5. Division of Chemistry, Department of Science, Faculty of Science and Technology, Prince of Songkla University, Pattani Campus, 94000 Thailand;1. Tecnológico Nacional de México/Centro Nacional de Investigación y Desarrollo Tecnológico (CENIDET), Prolongación Palmira s/n esq, Apatzingán, Col. Palmira, Cuernavaca, Morelos, Mexico;2. CIICAp/FCQeI/Universidad Autónoma del Estado de Morelos Av, Universidad 1001 Col, Chamilpa C.P, 62209 Cuernavaca, Morelos, Mexico;3. Facultad de Química/ICF/Universidad Nacional Autónoma de México, Coyoacán, D. F. C. P. 04510, Mexico;1. Enersol Pty Ltd, 235 Nelson St, Annandale, NSW, 2038, Australia;2. United Nations Population Fund, UN City, Marmorvej 51, 2100, Copenhagen, Denmark;1. State Key Laboratory of Polymer Materials Engineering, College of Polymer Science & Engineering, Sichuan University, Chengdu 610065, China;2. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chmeical Technology, Beijing 100029, China;3. Key laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Raman spectroscopy including mapping technique appears as a powerful technique for the characterization of polymer blends like thermoplastic elastomers (TPEs) and thermoplastic vulcanizates (TPVs). The Raman spectra of polymers blends such as natural rubber/polypropylene (NR/PP) and 65% hydrogenated natural rubber/polypropylene (65%HNR/PP) were identified and the phase distribution was determined. The study was driven for the same type of blends in TPEs state and TPVs state obtained after to 2 different processes, either peroxide cure or sulfur cure. The morphology of TPEs and TPVs obtained by Raman spectroscopy were compared and confirmed using scanning electronic microscopy.Raman mapping shows that the phase morphology of NR/PP, 65%HNR/PP, were characterized as continuous rubber phase morphology of the thermoplastic elastomers (TPEs) and a fine dispersion of cross-linked rubber phase in a continuous matrix of the thermoplastic vulcanizates (TPVs). Raman spectroscopy is demonstrated to be a reference to determine the content ratio of each component in the TPVs. Moreover, Raman mapping could be used to calculate the phase size of cross-linked rubber phase dispersed in the thermoplastic vulcanizates (TPVs). |
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| Keywords: | Raman spectroscopy Thermoplastic elastomers Thermoplastic vulcanizates Hydrogenated natural rubber Polymer blends |
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