Preparation and characterization of controlled-release poly(melamine-formaldehyde) microcapsules filled with 2,4-D isooctyl ester

摘要

A novel 2,4-D isooctyl ester microcapsules suspension was prepared through in situ polymerization method. The preparation and characterization of poly(melamine-formaldehyde) microcapsules filled with 2,4-D isooctyl ester with different weight ratios of shell material to core material were performed. Results showed that the microcapsules had much better performance. The accumulative release profiles and the Peppas mathematical model indicated that microcapsules had the performance to prolong the sustainable release time up to 30 days with the release behavior of anomalous transport. Meanwhile, less organic solvents were used throughout the preparation process and the preparation method was environmental friendly.