Effect of nonionic surfactant in the preparation of microsphere based on blend of poly(lactic acid) and polycaprolactone

E. Budianto, R. Dhafiningtia

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Microspheres of poly(lactic acid) (PLA) and poly(ϵ-caprolactone) (PCL) were blended and prepared using the water in oil (w/o) emulsion solvent evaporation method. The PLA/PCL blend was formulated with the composition of 60:40 (w/w), nonionic surfactant was utilized as the emulsifier. This study observed the distribution of the microspheres particle size by varying the nonionic surfactant volumes, emulsion stirring speed, and dispersion stirring time. The microspheres were characterized using Fourier Transform Infrared (FTIR) and Particle Size Analyzer (PSA). Physical forms of microspheres were observed using an optical microscope as well. The IR spectra of PLA/PCL blend showed that only physical interaction was occured between them. Moreover, the result of this study showed that when 2.0 mL nonionic surfactant was added, the uniform size distribution of the formed microspheres was observed at 31.50m. Furthermore, the microspheres that formed through emulsion stirring speed at 900 rpm revealed that the formed microspheres have a uniform size distribution at 31.50 μm, while the uniform size distribution at 34.58 μm was observed in the microspheres that formed during the dispersion stirring time at 90 minutes.

Original languageEnglish
Article number012021
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 28 Apr 2020
Event3rd International Symposium on Current Progress in Functional Materials 2018, ISCPFM 2018 - Depok, Indonesia
Duration: 8 Aug 20189 Aug 2018


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