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- W2366518104 abstract "Objective To prepare hydrophilic but insoluble microspheres from water soluble starch, and optimize its preparation process by orthogonal experiments.Methods An inverse suspension polymerization method was utilized to synthesize crosslinked starch microspheres, factors influencing emulsification and crosslinking reaction were studied.Fourier-transformed infrared spectrometry, SEM, laser particle size analyser, differential scanning calorimetry and thermo-gravimetry were employed to characterize the structure and properties of the starch microspheres.Results When the starch-water-alkaliratio was 7:20:2(m:m:m), the amount of water was 20 g , oil 160 mL, emulsifier 8 g and the stirring rate 500 r·min-1, fine emulsions were formed after 20 min stirring.Then the crosslinker was added under 45 ℃, and the reaction was continued for 4h.The microspheres with diameter around 68μm, a narrow particle size distribution(PSD) and good spherical shape were obtained.Fourier-transformed infrared spectrometry and thermoanalysis technique proved that the structure and characteristics of starch changed dramatically after crosslinking.The existence of abundant hydroxyl groups ensured the hydrophilicity and good water absorption ability of crosslinked starch microspheres.Conclusion The crosslinked starch microspheres prepared can be used as a drug-carrier for iodine, which is usually used as a bactericide." @default.
- W2366518104 created "2016-06-24" @default.
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- W2366518104 date "2009-01-01" @default.
- W2366518104 modified "2023-09-28" @default.
- W2366518104 title "Preparation of crosslinked water-soluble-starch microspheres" @default.
- W2366518104 hasPublicationYear "2009" @default.
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