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Polymethylmethacrylate (PMMA) sub-microparticles produced by Supercritical Assisted Injection in a Liquid Antisolvent |
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| Affiliation: | 1. Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 SA, Italy;2. Research Centre for Nanomaterials and Nanotechnology (NANOMATES), Salerno University, Italy;1. Nuclear Futures Institute, Bangor University, Bangor, Gwynedd, LL57 1UT, United Kingdom;2. National Nuclear Laboratory, Preston Laboratory, Springfields, Preston, Lancashire, PR4 0XJ, United Kingdom;1. Department of Civil, Chemical and Environmental Engineering (DICCA), University of Genoa, Via Opera Pia 15, 16145, Genova, Italy;2. Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy;3. Research Centre for Biomaterials BIONAM, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy;1. Department of Chemical and Biological Engineering, Koç University, Rumeli Feneri Yolu, Sariyer, Istanbul 34450, Turkey;2. Koç University Tüpra? Energy Center (KUTEM), Koç University, Sariyer, Istanbul 34450, Turkey |
| Abstract: | A recently developed supercritical assisted process, called Supercritical Assisted Injection in a Liquid Antisolvent (SAILA) is proposed to produce polymer micro and nanoparticles in water stabilized suspensions. Polymethylmethacrylate (PMMA) has been selected as the model polymer for a systematic study of the influence of the SAILA operating parameters on particle morphology and diameter. The effect of expanded liquid injection pressure on particle size and distribution was studied and different expanded liquid temperatures and compositions were also explored. Successful precipitation of the polymer in a water stabilized suspension was obtained and narrow particle size distributions were obtained using 70 and 90 bar injection pressures. PMMA particles controlled diameter were produced ranging between 0.2 ± 0.04 μm and 0.9 ± 0.2 μm. Particles are formed from the expanded liquid solution as a consequence of very fast supersaturation produced by spraying it the liquid antisolvent. |
| Keywords: | PMMA particles Expanded liquid Antisolvent Controlled particle size distribution |
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