«Фараби Әлемі» атты студенттер мен жас ғалымдардың халықаралық конференциясы

«Фараби Әлемі» атты студенттер мен жас ғалымдардың халықаралық конференциясы 
247 
 
 
 
 
 
 
 
 
 
 
 
 
 
СЕКЦИЯ 7 
 
ОРГАНИКАЛЫҚ МАТЕРИАЛДАРДЫҢ ХИМИЯСЫ МЕН 
ХИМИЯЛЫҚ ТЕХНОЛОГИЯСЫНЫҢ ЗАМАНАУИ МӘСЕЛЕЛЕРІ 
(МАГИСТРАНТТАР ҮШІН) 
 
СОВРЕМЕННЫЕ ПРОБЛЕМЫ ХИМИИ И ХИМИЧЕСКОЙ 
ТЕХНОЛОГИИ ОРГАНИЧЕСКИХ МАТЕРИАЛОВ
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

«Фараби Әлемі» атты студенттер мен жас ғалымдардың халықаралық конференциясы 
248 
SYNTHESIS OF HYDROPHOBICALLY MODIFIED POLYBETAINE 
(HMPB) 
 
Abutalip M.
Supervisor
:
PhD, Dr. Rakhmetullayeva R.K. 
Al-Farabi Kazakh National University 
abutalip.munziya@gmail.com
 
Hydrophobically modified polybetaine (HMPB) have received widespread 
attention due to their smart response properties and structures which resemble 
biological polymers like peptides and DNA. However, few studies have focused on 
the controlled synthesis and self- assembly of hydrophobically modified 
polybetaines due to the difficulty of synthesizing these materials. In this work, we 
reported the first molecular weight-controlled synthesis of amphiphilic 
polybetaines with various hydrocarbons via the reversible addition-fragmentation 
chain- transfer (RAFT) polymerization approach. 
We was synthesized poly (dodecyl-grafted aminocrotonate methacrylic acid) 
(PACRO-MAA), poly (tetradecyl-grafted aminocrotonate methacrylic acid) 
(PTACRO-MAA), and poly (hexadecyl-grafted amincrotonate methacrylic acid) 
(PTACRO-MAA) via (RAFT) polymerization approach. The two different 
tautomers of the monomer were also successfully identified and separated via thin 
layer chromatography (TLC) and column chromatography, and chemical structures 
of components of monomer products were characterized by Fourier Transform 
Infrared Spectroscopy (FTIR) and Nuclear Magnetic Resonance (NMR).
After successfully achieving the narrow molecular weight distribution of 
HMPB, the second goal is to study the self-assembly behaviors, FTRP and 
13
C,
1
C - 
NMR, combining with Gel Permeation Chromatography (GPC), were used for 
characterizing polymer compositions and molecular weight profiles. High usage of 
initiator/chain-transfer agent was preferable to reach a yield around 35%. 
Molecular weight around 22000 - 50000 g/mol and a narrow molecular weight 
distribution of 1.056-1.450 were achieved. 
Spherical, rodlike, and fractal assembled structures for the poly (alkyl grafted 
aminocrotonate -methacrylic acid) were observed with pH change using 
Transmission Electron Microscopy (TEM), zeta sizer, and dynamic light scattering 
(DLS). This change is consistent with ζ potential data since the micelle structure 
swells the most at basic pH and has a large electrostatic repulsion force.
The unique self-assembled structures of HMPCB synthesized via RAFT 
provide an opportunity to understand fundamental polymer science and can be 
engineered for broad applications.
 

«Фараби Әлемі» атты студенттер мен жас ғалымдардың халықаралық конференциясы 
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