Abstract
The correlation between polymer microstructure of mPEG-PDLLA and secondary aggregation of its micelle was studied. Close examination of 1H NMR spectra revealed that the methine moieties, -CH(CH3)-, of mPEG-PDLLA polymer well represented its microstructure. To elucidate the physicochemical characteristics of various microstructures, we have developed an index, called L-ratio, to indicate the relative content of heterotactic component within the polymer. Storage stability of micelles from six polymers with different L-ratios (L-ratio ranging from 28 to 33%) was studied at 30 °C and 50 °C, and changes in average particle size were monitored to evaluate their secondary aggregation. We have found that polymers with high L-ratio takes longer time to secondary aggregation of polymeric micelles to occur. The findings should provide insightful guidance in the development of polymeric micelles.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
