Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 52, Issue -, Pages 105-110Publisher
ELSEVIER
DOI: 10.1016/j.indcrop.2013.10.019
Keywords
Starch; Ionic liquid; Microemulsion; Crosslinking; Starch nanoparticles
Categories
Funding
- National Natural Science Foundation of China [21376097, 21004023]
- program for New Century Excellent Talents in University [NCET-13-0212]
- Guangdong Natural Science Foundation [S2013010012318]
- Key Project of Science and Technology of Guangdong Province [2012B091100443, 2012B091100047, 2012A020602004]
- Fundamental Research Funds for the Central Universities, SCUT [2013ZZ0070]
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A novel ionic liquid microemulsion consisting of 1-octyl-3-methylimidazolium acetate ([Omim]Ac, an ionic liquid), native corn starch, surfactant TX-100, 1-butanol and cyclohexane was prepared. The ionic liquid-in-oil (IL/O), bicontinuous, and oil-in-ionic liquid (O/IL) microregions of the microemulsions were identified by conductivity measurements. The formation of IL/O microemulsion was confirmed by UV-vis spectrophotometry using the methyl orange (MO) as absorption probes and dynamic light scattering (DLS) analysis. Starch nanoparticles were prepared with epichlorohydrin as crosslinker through 3 h IL/O microemulsion-crosslinking reaction at 50 C. The results of Fourier transform infrared spectroscopy (FUR) demonstrated the formation of crosslinking bonds in starch molecules. Scanning electron microscope (SEM) data revealed that starch nanoparticles showed aggregation or cluster formation. Starch nanoparticles with a mean diameter of 96.9 nm and narrow size distribution were confirmed by the results of DLS. (C) 2013 Elsevier B.V. All rights reserved.
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