Preparation of multifunctional poly(acrylic acid)-poly(ethylene oxide) nanogels from their interpolymer complexes by radiation-induced intramolecular crosslinking

Poly(acrylic acid)-poly(ethylene oxide) (PAA-PEO) interpolymer complexes (IPC)s were prepared with equimolar stoichiometric ratio of repeating units and converted to crosslinked nanogels via γ-ray irradiation of aqueous acetone solutions. The effect of acetone concentration on the coil size of nanog...

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Bibliographic Details
Published in:Colloid and polymer science 2018-09, Vol.296 (9), p.1599-1608
Main Authors: Rattanawongwiboon, Thitirat, Ghaffarlou, Mohammadreza, Sütekin, S. Duygu, Pasanphan, Wanvimol, Güven, Olgun
Format: Article
Language:English
Subjects:
Acetone
Acrylic acid
Acrylics
Atomic force microscopy
Block copolymers
Characterization and Evaluation of Materials
Chemical synthesis
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Ethylene oxide
Food Science
Microscopy
Nanotechnology and Microengineering
Original Contribution
Physical Chemistry
Pictures
Polymer Sciences
Radiation crosslinking
Radiation effects
Soft and Granular Matter
Surface charge
Temperature effects
Transmission electron microscopy
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Summary:Poly(acrylic acid)-poly(ethylene oxide) (PAA-PEO) interpolymer complexes (IPC)s were prepared with equimolar stoichiometric ratio of repeating units and converted to crosslinked nanogels via γ-ray irradiation of aqueous acetone solutions. The effect of acetone concentration on the coil size of nanogels was investigated by dynamic light scattering (DLS). pH and temperature effects on the size and surface charge of nanogels were studied by using DLS. Zeta potentials of the PAA-PEO nanogels were between − 5.31 mV (pH = 2) and − 45.00 mV (pH = 11) depending on dissociation of PAA. Atomic force microscopy (AFM) and transmission electron microscopy (TEM) pictures showed that dry PAA-PEO nanogels are spherical with diameters of ~ 100 and ~ 240 nm in the swollen state as determined by DLS. PAA-PEO nanogels synthesized in 25% ( v / v ) acetone/water mixture exhibited size stability over a period of 2 months. This simple method of preparing nanogels from polymer pairs avoids tiresome synthesis of corresponding block copolymers as precursors of functional nanogels. Graphical abstract Formation of poly(acrylic acid)-poly(ethylene oxide) (PAA-PEO) nanogels from interpolymer complexes and radiation-induced crosslinking
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-018-4368-x