In the present work,
a series of quaternized antibacterial polystyrenes (Anti-PSts) with various
molecular weights are synthesized and characterized. Initially, ω-bromo end functional
polystyrenes with different molecular
weights (PSt-Br-1, PSt-Br-2 and PSt-Br-2) are synthesized by atom transfer
radical polymerization (ATRP). Then, the ω–bromo functionalities of obtained PSt-Brs
are reacted with trimethylamine (TEA) to achieve corresponding antibacterial
properties. PSt-Brs and Anti-PSts produced are structurally characterized by Fourier
transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance
spectroscopy (1H-NMR), and gel permeation chromatography (GPC) at
various stages. Glass transition temperatures (Tg) of PSt-Brs and Anti-PSts are determined by differential
scanning calorimetry (DSC) analysis. Water contact angle measurement (WCA) is
employed for the wettability characterization studies of Anti-PSts. In addition,
antibacterial activity of final products against to Gram-positive (Staphylococcus aureus) and Gram-negative
(Escherichia coli) bacteria is elucidated
in terms of molecular weight and quaternization reaction time.
Primary Language | English |
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Subjects | Polymer Science and Technologies |
Journal Section | Articles |
Authors | |
Publication Date | June 15, 2019 |
Submission Date | April 1, 2019 |
Acceptance Date | May 16, 2019 |
Published in Issue | Year 2019 |