NDLI: The effect of polymer architecture on the nano self-assemblies based on novel comb-shaped amphiphilic poly(allylamine)

Content Provider	Springer Nature Link
Author	Thompson, Colin J. Ding, Caixia Qu, Xiaozhong Yang, Zhenzhong Uchegbu, Ijeoma F. Tetley, Laurence Cheng, Woei Ping
Copyright Year	2008
Abstract	Twelve novel poly(allylamine) (PAA)-based, comb-shaped amphiphilic polymers have been developed. Hydrophobic groups of cetyl, palmitoyl and cholesteryl were randomly grafted to PAA and quaternisation was carried out on some modified polymers. Polymers were characterised using 1H NMR, elemental analysis and differential scanning calorimetry. All polymers formed nano self-assemblies in the aqueous solution with a positive zeta potential and were able to encapsulate a hydrophobic agent, methyl orange, in the core. The critical aggregation concentration (CAC) and the microviscosity were found to be dependent on the polymer hydrophobicity. Being the most hydrophobic polymer, cholesteryl-grafted PAA had the lowest CAC (0.02 mg mL−1) and the highest microviscosity. They appeared to form dense nanoparticles and were transformed into novel nanostructures in the presence of free cholesterol. Palmitoyl-grafted polymers formed nanoparticles while cetyl-grafted polymers formed polymeric micelles. The flexibility of cetyl chains possibly resulted in the formation of multicore polymeric micelles.
Starting Page	1511
Ending Page	1526
Page Count	16
File Format	PDF
ISSN	0303402X
Journal	Colloid and Polymer Science
Volume Number	286
Issue Number	13
e-ISSN	14351536
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-09-23
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Self-assembly Nanoparticles Micelle Amphiphilic polymer Food Science Physical Chemistry Characterization and Evaluation of Materials Soft Matter, Complex Fluids Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Colloid and Surface Chemistry Materials Chemistry Physical and Theoretical Chemistry Polymers and Plastics

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