期刊
NANOMATERIALS
卷 11, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/nano11081958
关键词
core-shell nanoparticle; particle size control; poly(styrene-co-maleic anhydride); particle size distribution; morphology
类别
资金
- National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2019R1A6A1A11055660]
- Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) - Ministry of Agriculture, Food and Rural Affairs (MAFRA) [121027031HD020]
- Korea Institute of Industrial Technology [EO-20-0022]
- Institute of Planning & Evaluation for Technology in Food, Agriculture, Forestry & Fisheries (iPET), Republic of Korea [121027031HD020] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, PSMA/PEI core-shell nanoparticles were prepared using soap-free emulsion polymerization method with controlled reaction conditions for tuning particle morphology and stability, showing potential for various applications.
Emulsion polymerization presents the disadvantage that the physical properties of polymer particles are altered by surfactant adsorption. Therefore, in the soap-free emulsion polymerization method, a hydrophilic initiator is utilized while inducing repulsion among particles on the polymer particle surface, resulting in stable polymer particle production. In this study, we developed a methodology wherein spherical and uniform poly(styrene-co-maleic anhydride) (PSMA)/polyethyleneimine (PEI) core-shell nanoparticles were prepared. Further, their morphology was analyzed. During PSMA polymerization, the addition of up to 30% maleic anhydride (MA) resulted in stable polymerization. In PSMA/PEI nanoparticle fabrication, the number of reactants increased with increased initial monomer feed amounts; consequently, the particle size increased, and as the complete monomer consumption time increased, the particle distribution widened. The styrene (St) copolymer acted as a stabilizer, reducing particle size and narrowing particle distribution. Furthermore, the monomers were more rapidly consumed at high initiator concentrations, irrespective of the initiator used, resulting in increased particle stability and narrowed particle distribution. The shell thickness and particle size were PEI feed ratio dependent, with 0.08 being the optimal PEI-to-MA ratio. The fabricated nanoparticles possess immense potential for application in environmental science and in chemical and health care industries.
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