Preparation of Thermoresponsive Polymer Nanogels of Oligo(Ethylene Glycol) Diacrylate-Methacrylic Acid and Their Property Characterization

Stimuli-responsive polymers have received growing attention in recent years owing to their wide applications in diverse fields. A novel stimuli-responsive polymer, based on oligo(ethylene glycol) diacrylate (OEGDA) and methacrylic acid (MAA), P(OEGDA-MAA), is prepared by precipitation polymerization...

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Bibliographic Details
Published in:Nanoscale research letters 2018-07, Vol.13 (1), p.209-10, Article 209
Main Authors: Cao, Hongyan, Guo, Fenghao, Chen, Zhiyong, Kong, Xiang Zheng
Format: Article
Language:English
Subjects:
Chemical industry
Chemistry and Materials Science
Crosslinking
Ethanol
Ethylene
Ethylene glycol
Immunogenicity
Materials Science
Methacrylic acid
Molecular Medicine
Morphology
Nano Express
Nanochemistry
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
Oligo(ethylene glycol) diacrylate
Phase transitions
Polymerization
Polymers
Stimuli
Thermoresponsive
Transition temperature
Transition temperatures
Volume phase transition
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Summary:Stimuli-responsive polymers have received growing attention in recent years owing to their wide applications in diverse fields. A novel stimuli-responsive polymer, based on oligo(ethylene glycol) diacrylate (OEGDA) and methacrylic acid (MAA), P(OEGDA-MAA), is prepared by precipitation polymerization and is shown to have a LCST-type VPTT (volume phase transition temperature) at 33 °C in water and a UCST-type VPTT at 43 °C in ethanol, all at concentration of 1 mg/mL. Both VPTTs are strongly concentration and pH dependent, providing an easy way to tune the phase transition temperature. The polymer is characterized with regard to its composition and its morphology in water and in ethanol at different concentration. The two transitions are studied and interpreted based on the results. This work provides a novel way for the preparation of a new type of stimuli-responsive polymer with great potential for different applications, particularly those in biomedical areas because PEG-based stimuli-responsive polymers are known to be nontoxic and non-immunogenic.
ISSN:1931-7573
1556-276X
DOI:10.1186/s11671-018-2610-6