Synthesis and characterization of amphiphilic block copolymer of poly (L-phenylalanine)-b-poly(L-aspartic acid) / 国际药学研究杂志
Journal of International Pharmaceutical Research
; (6): 718-722,726, 2016.
Article
Dans Zh
| WPRIM
| ID: wpr-604656
Responsable en Bibliothèque :
WPRO
ABSTRACT
Objective To design and synthesize a different molecular mass block copolymer of poly(L-phenylalanine)-b-poly (L-aspartic acid)(PPA-PAA). Methods The L-phenylalanine and L-aspartic acid were used as raw materials to synthesize L-phenyl?alanine N-carboxy-ɑ-amino acid anhydride and L-aspartic acid-β-benzylester N-carboxy-ɑ-amino acid anhydride. The target com?pounds of amphiphilic block copolymer of PPA-PAA were synthesized by ring-opening polymerization. The critical micelle concentra?tion of the amphiphilic polymer was determined by pyrene fluorescence probe method. Results The copolymers of hydrophobic chain segment 500,2000,and 4000 were synthesized and the structures were confirmed by hydrogen nuclear magnetic resonance and Fouri?er transformed infrared. The critical micelle concentration of polymers changed with adjusting the feed ratio of PPA to PAA. Conclu?sion The results show that the longer the hydrophobic chain segment of PPA is,the smaller the critical micelle concentration of poly?mers. The results lay the groundwork for further studying the stabilizing effect of the drug polymer nanoparticles with different proper?ties.
Texte intégral:
1
Indice:
WPRIM
langue:
Zh
Texte intégral:
Journal of International Pharmaceutical Research
Année:
2016
Type:
Article