José António da Purificação Martins
  Professor Catedrático  
   
  telefone: 253 510 325  
  e-mail: jamartins@dep.uminho.pt  
   
   
   
Perfil biográfico
José António Martins ensina Ciência de Polímeros no Departamento de Engenharia de Polímeros da Universidade do Minho e é membro do CICECO desde Julho de 2005. Formou-se em Física pela Faculdade de Ciências da Universidade de Lisboa, obteve o Mestrado em Engenharia de Materiais pelo Instituto Superior Técnico e Universidade do Minho, e doutorou-se em Ciência e Engenharia de Polímeros em 1996 pela Universidade do Minho.
Interesses científicos
Grupo de Investigação
Weidong Zhang (Pós-Doc). Joanna Krakoviak (Estudante de Doutoramento)
Principais colaboradores
Nacionais: J. J. C. Cruz Pinto Ana Barros-Timmons Tito Trindade Estrangeiros: Andrzej Galeski (Lodz, Poland)
Actividade pedagógica
Ciência de Polímeros e Física de Polímeros
Projectos financiados
POCTI/CTM/46270/2002 QUANTITATIVE ANALYSIS OF SHEAR EFFECTS ON THE SOLIDIFICATION OF POLYMERS WITH A SHEAR-DSC Financiamento: FCT Início: Outubro 2004; Fim: Outubro 2007
Publicações seleccionadas
Cinco publicações pela ordem de importância que lhes atribuo: 1. J. A. Martins, Wd. Zhang, A. M. Brito, Saturation of shear-induced isothermal crystallization of polymers at the steady-state and the entanglement-disentanglement transition, MACROMOLECULES, aceite, a ser publicada em 2006. 2. W. Zhang, J. A. Martins, Evaluation of the Effect of Melt Memory on Shear Induced Crystallization of Low Density Polyethylene, MACROMOLECULAR RAPID COMMUNICATIONS, 27, 1067 (2006). 3. J. A. Martins, J. J. C. Cruz Pinto, Evaluation of the instantaneous nucleation density in the isothermal crystallization of polymers, POLYMER 43 (14): 3999-4010 (2002). 4. J. A. Martins, J. J. C. Cruz-Pinto, The temperature calibration on cooling of differential scanning calorimeters, THERMOCHIM ACTA 332 (2): 179-188 (1999). 5. J. A. Martins, M. C. Cramez, M. J. Oliveira, R. J. Crawford, Prediction of spherulite size in rotationally molded polypropylene, J MACROMOL SCI PHYS B42 (2): 367-385 (2003). Outras publicações por assunto: A. Cristalização em condições quiecentes 1. Martins JA, Cruz Pinto JJC, Oliveira MJ, Polymer crystallization: isothermal and non isothermal spherulite growth-parameters from optical microscopy and differential scanning calorimetry, J THERM ANAL 40 (2): 629-636 (1993). 2. Cruz Pinto JJC, Martins JA, Oliveira MJ, The isothermal crystallization of engineering polymers – POM and PEEK, COLLOID POLYM SCI 272 (1): 1-16 (1994). 3. Martins JA, Cruz Pinto JJC, Prediction of poly(oxymethylene) crystallization behaviour from isothermal data , J THERM ANAL 40 (2): 621-628 (1993). 4. Martins JA, Nonisothermal crystallization kinetics of PP after DSC calibration on cooling., ABSTR PAP AM CHEM S 218: 168-PMSE Part 2 (1999). 5. Martins JA, Pinto JJCC, Non-isothermal crystallisation kinetics with instantaneous nucleation, POLYMER 41 (18): 6875-6884 (2000). 6. Martins JA, Pinto JJCC, The nonisothermal crystallization kinetics of polypropylene after DSC calibration on cooling, J MACROMOL SCI PHYS B39 (5-6): 711-722 (2000). 7. Esteves AC, Barros-Timmons AM, Martins JA, Zhang W¸ Cuz-Pinto JJC, Trindade T, Crystallization behaviour of new poly(tetramethyleneterephthalamide) nanocomposites containing SiO2 fillers with distinct morphologies, COMPOSITES PART B. 36: 51-59 (2005). B. Análise Térmica 1. Martins JA, Alves NM, Mano JF, Pinto JJCC, Temperature correction of dynamic mechanical and thermomechanical analysers during heating, cooling and isothermal experiments (vol 346, pg 133, 2000), THERMOCHIM ACTA 369 (1-2): 175-178 (2001). 2. Martins JA, Malheiro MJA, Teixeira JC, Pinto JJCC, The role of the temperature errors in DSC scans on the prediction of the average density of nuclei in polymers crystallized under quiescent conditions, THERMOCHIM ACTA 391 (1-2): 97-106 (2002). 3. Martins JA, Pinto JJCC, True sample temperatures in isothermal differential scanning calorimetry scans and their effect on the overall polymer crystallization kinetics, J APPL POLYM SCI 91 (1): 125-131 (2004). 4. Zhang W, Martins JA, The temperature calibration of a parallel plate rheometer and evaluation of the thermal lags during polymer solidification, THERMOCHIM ACTA 413 (1-2): 101-110 (2004). 5. Malheiro MJA, Martins JA, Cruz Pinto JJC, Evaluation of the calibration errors on cooling of a DSC with different sets of standard metals, THERMOCHIM ACTA, 420: 155-161 (2004). C. Cristalização induzida por esforços de corte. 1. Martins JA, Zhang W, Carvalho V, Brito AM, Soares FO, Evaluation of the sample temperature increase during the quiescent and shear-induced isothermal crystallization of polyethylene, POLYMER 44 (26): 8071-8079 (2003). 2. Martins JA, Zhang W, Brito AM, et al. Isothermal and nonisothermal crystallization of polymers: Analysis with a shear differential thermal analyzer, REVIEW OF SCIENTIFIC INSTRUMENTS 76 (10): Art. No. 105105 OCT 2005. D. Outras áreas 1. Martins JA, Seixas J, Oliveira MJ, Maio AM, Pouzada AS, Optical properties of injection-molded polystyrene scintillators. II. Distribution of dopants, J APPL POLYM SCI 88 (11): 2714-2718 (2003). 2. Martins JA, Seixas J, Silva J, Esteves V, Oliveira MJ,Gomes J, Maio A, Pouzada AS, Optical properties of injection-molded polystyrene scintillators. I. Processing and optical properties, J APPL POLYM SCI 88 (11): 2706-2713 (2003). 3. Domingues MSQ, Gomes JINR, Martins JA, Dyeing of PA6.6 fibers - Effect of solvent and temperature on thermal properties, J THERM ANAL CALORIM 74 (3): 749-759 (2003)
Projectos


 
Apoio

1suponsers_list_ciceco.jpg