Synthesis and characterizations of a series of water soluble polyamides and their micellization behavior

A series of water soluble polyamides were synthesized via melt-polycondensation using glutaric acid and poly(propylene glycol) bis(2-aminopropyl ether) as monomers. The chemical structures of the polyamides were ascertained by FT-IR and 1H NMR. The thermal properties of the polyamides under consider...

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Bibliographic Details
Published in:Polymer (Guilford) 2019-09, Vol.179, p.121634, Article 121634
Main Authors: Wang, Lipeng, Zhu, Qing, Bai, Yongping
Format: Article
Language:English
Subjects:
Large complex micelles
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Water-soluble polyamides
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Summary:A series of water soluble polyamides were synthesized via melt-polycondensation using glutaric acid and poly(propylene glycol) bis(2-aminopropyl ether) as monomers. The chemical structures of the polyamides were ascertained by FT-IR and 1H NMR. The thermal properties of the polyamides under consideration were measured by TGA and DSC. It was found that one kind of the polyamides can self-assemble into nano-size vesicles with densely packed multilayer wall in aqueous solution, while another polyamide can self-assemble into large complex micelles. Interestingly, these large complex micelles display a unique acid sensitive characteristic according to the TEM and PST measurements. [Display omitted] •Water soluble polyamides (PAGAPs) derived from glutaric acid and poly(propylene glycol) (PPG) having amino group at both ends were successfully synthesized.•PAGAP.230 can self-assemble into nano-sized vesicles with densely packed multilayer wall.•PAGAP.2000 can self-assemble into micron-sized large complex micelles displaying unique acid sensitive characteristic.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2019.121634