Journal
POLYMERS
Volume 13, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/polym13020216
Keywords
copolymerization; hydrophilic; antifouling; E; coli; S; aureus; biofilm
Categories
Funding
- NUST Research Directorate
- HEC, NRPU [3526]
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Amphiphilic copolymers of P(DMAEMA-co-MMA) with antibacterial activity were synthesized and optimized to control biofilm adhesion, exhibiting significant zones of inhibition against Gram-positive Staphylococcus aureus and Gram-negative Escherchia coli. The copolymer PDM1 showed good inhibitory effects, particularly in controlling bacterial biofilm adhesion.
Amphiphilic copolymers are recognized as important biomaterials and used as antibacterial agents due to their effective inhibition of bacterial growth. In current study, the amphiphilic copolymers of P(DMAEMA-co-MMA) were synthesized using free radical polymerization by varying the concentrations of hydrophilic monomer 2-dimethylamino ethylmethacrylate (DMAEMA) and hydrophobic monomer methyl methacrylate (MMA) having PDI value of 1.65-1.93. The DMAEMA monomer, through ternary amine with antibacterial property optimized copolymers, P(DMAEMA-co-MMA), compositions to control biofilm adhesion. Antibacterial activity of synthesized copolymers was elucidated against Gram-positive Staphylococcus aureus (ATCC 6538) and Gram-negative Escherchia coli (ATCC 8739) by disk diffusion method, and zones of inhibition were measured. The desired composition that was PDM1 copolymer had shown good zones of inhibition i.e., 19 +/- 0.33 mm and 20 +/- 0.33 mm for E. coli and S. aureus respectively. The PDM1 and PDM2 have exhibited significant control over bacterial biofilm adhesion as tested by six well plate method. SEM study of bacterial biofilm formation has illustrated that these copolymers act in a similar fashion like cationic biocide. These compositions viz. PDM1 and PDM2, may be useful in development of bioreactors, sensors, surgical equipment and drug delivery devices.
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