Synthesis and characterization of novel thermo- and salt-sensitive amphoteric terpolymers based on acrylamide derivatives

Show full item record



Permalink

http://hdl.handle.net/10138/340136

Citation

Ayazbayeva , A Y , Shakhvorostov , A V , Seilkhanov , T M , Aseyev , V O & Kudaibergenov , S E 2021 , ' Synthesis and characterization of novel thermo- and salt-sensitive amphoteric terpolymers based on acrylamide derivatives ' , Bulletin of the university of karaganda-Chemistry , vol. 104 , no. 4 , pp. 9-20 . https://doi.org/10.31489/2021Ch4/9-20

Title: Synthesis and characterization of novel thermo- and salt-sensitive amphoteric terpolymers based on acrylamide derivatives
Author: Ayazbayeva, A. Ye.; Shakhvorostov, A. V.; Seilkhanov, T. M.; Aseyev, V. O.; Kudaibergenov, S.E.
Contributor organization: Department of Chemistry
Polymers
Date: 2021
Language: eng
Number of pages: 12
Belongs to series: Bulletin of the university of karaganda-Chemistry
ISSN: 2518-718X
DOI: https://doi.org/10.31489/2021Ch4/9-20
URI: http://hdl.handle.net/10138/340136
Abstract: A novel linear amphoteric terpolymers based on neutral monomer - N-isopropylacrylamide (NIPAM), anionic monomer - 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt (AMPS), and cationic monomer - (3-acrylamidopropyl) trimethylammonium chloride (APTAC) were synthesized by free-radical polymerization in aqueous solution and characterized by methods of H-1 NMR and FTIR spectroscopy, TGA, GPC, Dynamic light scattering (DLS) and zeta-potential. The thermal and salt sensitivity of amphoteric ternary polymers of various compositions, particularly, [NIPAM]:[AMPS]:[APTAC] = 90:2.5:7.5; 90:5:5; 90:7.5:2.5 mol.% were studied in aqueous and aqueous-salt solutions in the temperature range from 25 to 60 degrees C and at the NaCl ionic strength. interval from 10(-3) to 1M. It was found that due to hydrophobic/hydrophilic balance, the temperature dependent conformational and phase change of macromolecular chains becomes sensitive to salt addition and allows the fine-tuning of the phase transition. In aqueous and aqueous-salt solutions, the average hydrodynamic size of amphoteric terpolymers is varied from 8 to 300 nm exhibiting bimodal distribution at room temperature. The number average (M-n) and weight average (M-w) molecular weights, polydispersity index (PDI), and zeta-potentials of amphoteric terpolymers in aqueous solutions were determined.
Subject: 116 Chemical sciences
221 Nano-technology
Peer reviewed: Yes
Rights: cc_by_nc_nd
Usage restriction: openAccess
Self-archived version: publishedVersion


Files in this item

Total number of downloads: Loading...

Files Size Format View
02.pdf 891.5Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record