Analytical review of some relevant methods and devices for the determination of the specific volume on thermoplastic polymers under processing conditions |
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| Institution: | 1. Biophym, Departamento de Física Macromolecular, Instituto de Estructura de la Materia, CSIC, C/Serrano 113 bis, 28006 Madrid, Spain;2. Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela;3. Institute for Polymer Materials (POLYMAT) and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country (UPV-EHU), Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain;4. IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao, Spain;1. Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia;2. Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia;3. Chemistry Department, Faculty of Science, Tanta University, Tanta 2173, Egypt;1. Department of Chemical Engineering, Universitat de Girona, Campus Montilivi, 17071, Girona, Spain;2. Centre Català del Plàstic (CCP), Universitat Politècnica de Catalunya, C/ Colom, 114, 08222, Terrassa, Spain;1. TIIP – Research Group, Integrated in I3A Institute, EINA – Universidad de Zaragoza, C/Maria de Luna 3. Edif., 50018 Zaragoza, Spain;2. Mechanical Engineering Dpt., TIIP – Research Group, Integrated in I3A Institute, EINA – Universidad de Zaragoza, C/Maria de Luna 3, 50018 Zaragoza, Spain |
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| Abstract: | This article reviews some of the most representative methods and devices to measure the specific volume in polymeric materials found in literature. Each method is described and a comparison between the experimental conditions and typical injection molding processing conditions is discussed. In general, the main difficulty with specific volume measurements is determination of the temperature distribution through sample thickness, particularly when achieving typical processing conditions is intended. Therefore, the necessity of developing a new device which allows direct measurements of pressure and temperature at various positions along the sample thickness in order to calculate the cooling condition was identified. |
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| Keywords: | Pressure-volume-temperature Polymer characterization Injection molding Simulation Specific volume |
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