Publications

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2018
Matos, Ricardo JR, Catarina IP Chaparro, Jorge C. Silva, Manuel Almeida Valente, João Paulo Borges, and Paula I. P. Soares. "Electrospun composite cellulose acetate/iron oxide nanoparticles non-woven membranes for magnetic hyperthermia applications." (2018). Abstract
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Cidade, M. T., DJ Ramos, J. Santos, N. Calero, J. Muñoz, and J. P. Borges. "Injectable hydrogels based on pluronic/water systems filled with alginate microparticles: Rheological characterization." Vol. 1981. AIP Publishing, 2018. 020091. Abstract
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2016
Soares, Paula I. P., César AT Laia, Alexandra Carvalho, Laura CJ Pereira, Joana T. Coutinho, Isabel M. M. Ferreira, Carlos M. M. Novo, and João Paulo Borges. "Iron oxide nanoparticles stabilized with a bilayer of oleic acid for magnetic hyperthermia and MRI applications." Applied Surface Science. 383 (2016): 240-247. Abstract
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Soares, Paula I. P., Diana Machado, César Laia, Laura CJ Pereira, Joana T. Coutinho, Isabel M. M. Ferreira, Carlos M. M. Novo, and João Paulo Borges. "Thermal and magnetic properties of chitosan-iron oxide nanoparticles." Carbohydrate polymers. 149 (2016): 382-390. Abstract
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2015
T, Brehm, Pereira G, Leal C, Gonçalves C, Borges J, and Cidade M. "Electrorheological characterization of dispersions in silicone oil of encapsulated liquid crystal 4-n-penthyl-4′-cyanobiphenyl in polyvinyl alcohol and in silica." Physica Scripta. 90 (2015): 035802. Abstract
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Soares, Paula I. P., Frederik Lochte, Coro Echeverria, Laura CJ Pereira, Joana T. Coutinho, Isabel M. M. Ferreira, Carlos M. M. Novo, and others. "Thermal and magnetic properties of iron oxide colloids: influence of surfactants." Nanotechnology. 26 (2015): 425704. Abstract
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2014
CF, João, Vasconcelos JM, Silva JC, and Borges JP. "An overview of inverted colloidal crystal systems for tissue engineering." Tissue engineering. Part B, Reviews. 20 (2014): 437-54. Abstract
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Soares, PI, AM Alves, LC Pereira, JT Coutinho, IM Ferreira, CM Novo, and J. P. Borges. "Effects of surfactants on the magnetic properties of iron oxide colloids." J Colloid Interface Sci.. 419 (2014): 46-51. AbstractWebsite

Iron oxide nanoparticles are having been extensively investigated for several biomedical applications such as hyperthermia and magnetic resonance imaging. However, one of the biggest problems of these nanoparticles is their aggregation.

Taking this into account, in this study the influence of three different surfactants (oleic acid, sodium citrate and Triton X-100) each one with various concentrations in the colloidal solutions stability was analyzed by using a rapid and facile method, the variation in the optical absorbance along time.

The synthesized nanoparticles through chemical precipitation showed an average size of 9 nm and a narrow size distribution. X-ray diffraction pattern and Fourier Transform Infrared analysis confirmed the presence of pure magnetite. SQUID measurements showed superparamagnetic properties with a blocking temperature around 155 K. In addition it was observed that neither sodium citrate nor Triton X-100 influences the magnetic properties of the nanoparticles. On the other hand, oleic acid in a concentration of 64 mM decreases the saturation magnetization from 67 to 45 emu/g. Oleic acid exhibits a good performance as stabilizer of the iron oxide nanoparticles in an aqueous solution for 24 h, for concentrations that lead to the formation of the double layer.

2013
R, Igreja, Domingos H, Borges JP, and Dias CJ. "Enhancing the Response of Chemocapacitors with Electrospun Nanofiber Films." ADVANCED MATERIALS FORUM VI, PTS 1 AND 2. 730-732 (2013): 197-202. Abstract
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2012
PIP, Soares, Ferreira IMM, Igreja RAGBN, Novo CMM, and Borges JPMR. "Application of hyperthermia for cancer treatment: recent patents review." Recent patents on anti-cancer drug discovery. 7 (2012): 64-73. Abstract
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JDS, Martins, Henriques CMR, Borges JPMR, Prata SGM, Almeida M, and Silva JAMC Biodegradable occlusive membranes for oral and periodontal surgery. Vol. 6. JOURNAL OF TISSUE ENGINEERING AND REGENERATIVE MEDICINE, 6., 2012. Abstract
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PI, Soares, Dias SJ, Novo CM, Ferreira IM, Ferreira IM, and Borges JP. "Doxorubicin vs. Ladirubicin: Methods For Improving Osteosarcoma Treatment." Mini reviews in medicinal chemistry. 12 (2012): 1239-1249. Abstract
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AFR, Pimenta, Baptista AC, Carvalho T, Brogueira P, Lourenco NMT, Afonso CAM, Barreiros S, Vidinha P, and Borges JP. "Electrospinning of Ion Jelly fibers." MATERIALS LETTERS. 83 (2012): 161-164. Abstract
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PQ, Franco, Joao CFC, Silva JC, and Borges JP. "Electrospun hydroxyapatite fibers from a simple sol-gel system." MATERIALS LETTERS. 67 (2012): 233-236. Abstract
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SR, Gomes, Rodrigues GM, Martins GG, Henriques CM, Borges JP, and Silva JC How fibroblasts respond to different biomaterials: comparative adhesion and proliferation studies. Vol. 6. JOURNAL OF TISSUE ENGINEERING AND REGENERATIVE MEDICINE, 6., 2012. Abstract
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2011
A, Pedrosa, Lanca MC, Borges JP, Neagu ER, Dias CJ, and Marat-Mendes JN. "Influence of Polarization on the Bioactivity of Nanopowders of Hydroxyapatite." 2011 14TH INTERNATIONAL SYMPOSIUM ON ELECTRETS (ISE) (2011): 55-56. Abstract
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2009
MP, Ribeiro, Espiga A, Silva D, Baptista P, Henriques J, Ferreira C, Silva JC, Borges JP, Pires E, Chaves P, and Correia IJ. "Development of a new chitosan hydrogel for wound dressing." WOUND REPAIR AND REGENERATION. 17 (2009): 817-824. Abstract
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Godinho, MH; Canejo, JP; Pinto, LFV; Borges, and JP; Teixeira. "How to mimic the shapes of plant tendrils on the nano and microscale: spirals and helices of electrospun liquid crystalline cellulose derivatives." 5 (2009): 2772-2776. Abstract
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C, Henriques, Vidinha R, Botequim D, Borges JP, and Silva JAMC. "A Systematic Study of Solution and Processing Parameters on Nanofiber Morphology Using a New Electrospinning Apparatus." JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY. 9 (2009): 3535-3545. Abstract
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2008
R, Vidinha, Henriques C, Borges JP, and Silva JC. "Study of novel nanofiber mats obtained by electrospinning ternary blends containing chitosan, cellulose acetate and poly(ethylene oxide)." Tissue Engineering Part A. 14 (2008): P351. AbstractWebsite
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2006
CMS, Ranito, Oliveira FAC, and Borges JP. "Mechanical characterization of dense hydroxyapatite blocks." Advanced Materials Forum Iii, Pts 1 and 2. Vol. 514-516. Materials Science Forum, 514-516. 2006. 1083-1086. Abstract
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V, Santos, Borges JP, Ranito CMS, Pires E, Araujo H, Marques A, Tomas L, Fortunato E, Martins R, and Nunes Y. "Novel multilayer coatings on polyethylene for acetabular devices." Advanced Materials Forum Iii, Pts 1 and 2. Vol. 514-516. Materials Science Forum, 514-516. 2006. 868-871. Abstract
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CMS, Ranito, Nogueira CA, Domingues J, Pedrosa F, Oliveira FAC, and Borges JP. "Optimization of the synthesis of hydroxyapatite powders for biomedical applications using Taguchi{'}s method." Advanced Materials Forum Iii, Pts 1 and 2. Vol. 514-516. Materials Science Forum, 514-516. 2006. 1025-1028. Abstract
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2005
CMS, Ranito, Oliveira FAC, and Borges JP. "Hydroxyapatite foams for bone replacement." Bioceramics 17. Vol. 17. KEY ENGINEERING MATERIALS, 17. 2005. 341-344. Abstract
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2004
PL, Granja, Silva AIN, Borges JP, Barrias CC, and Amaral IF. "Preparation and characterization of injectable chitosan-hydroxyapatite microspheres." BIOCERAMICS 16. 254-2 (2004): 573-576. Abstract
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