Styrene-maleic Anhydride Copolymer Research Articles

Study of the morphological and thermal properties of polystyrene nanocomposites based on modified halloysite nanotubes with styrene-maleic anhydride copolymers

In this study, the melt blending method was used to prepare the polystyrene/halloysite nanotubes (PS/HNTs) nanocomposites instead of in-situ bulk polymerization of styrene monomer in the presence of HNTs. Surface modification of HNTs with styrene-maleic anhydride copolymers (SMA) was performed in THF medium to improve the HNTs distribution and compatibility in the PS matrix. PS/HNTs nanocomposites were prepared in a twin-screw micro compounder containing 5, 10, and 15wt.% of nanoclays. The influences of the surface modification of HNTs on the properties of the nanocomposites were studied by XRD, SEM, DSC, TGA, and tensile test. The SEM images showed that the modified HNTs samples were uniformly distributed in the PS matrix compared to the pristine HNTs. The thermal stability of nanocomposites was also improved by increasing of modified HNTs content. Consequently, the surface modification increased the dispersion of HNTs in the PS nanocomposites prepared by melt blending method.

PH Tunable and Divalent Metal Ion Tolerant Polymer Lipid Nanodiscs.

The development and applications of detergent-free membrane mimetics have been the focus for the high-resolution structural and functional studies on membrane proteins. The introduction of lipid nanodiscs has attracted new attention toward the structural biology of membrane proteins and also enabled biomedical applications. Lipid nanodiscs provide a native lipid bilayer environment similar to the cell membrane surrounded by a belt made up of proteins or peptides. Recent studies have shown that the hydrolyzed form of styrene maleic anhydride copolymer (SMA) has the ability to form lipid nanodiscs and has several advantages over protein or peptide based nanodiscs. SMA polymer lipid nanodiscs have become very important for structural biology and nanobiotechnological applications. However, applications of the presently available polymer nanodiscs are limited by their instability toward divalent metal ions and acidic conditions. To overcome the limitations of SMA nanodiscs and to broaden the potential applications of polymer nanodiscs, the present study investigates the tunability of SMA polymer nanodiscs by systematically modifying the maleic acid functional group. The two newly developed polymers and subsequent lipid nanodiscs were characterized using solid-state NMR, FT-IR, TEM, and DLS experiments. The pH dependence and metal ion stability of these nanodiscs were studied using static light scattering and FTIR. The reported polymer nanodiscs exhibit unique pH dependent stability based on the modified functional group and show a high tolerance toward divalent metal ions. We also show these tunable nanodiscs can be used to encapsulate and stabilize a polyphenolic natural product curcumin.

Stable aqueous dispersion of polymer functionalized graphene sheets from electrochemical exfoliation for anticorrosion application

A green approach of achieving stable aqueous dispersion of graphene by noncovalent functionalization using hydrolyzed styrene-maleic anhydride copolymer has been successfully accomplished. The alkaline solution of hydrolyzed styrene-maleic anhydride copolymer was used as the electrolyte during the electrochemical exfoliation of graphite and simultaneously functionalized the exfoliated graphene sheets. The formation of single-layer graphene was confirmed by X-ray diffraction, atomic force microscopy, and transmission electron microscopy analyses. Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy and thermogravimetric analyses confirm the existence of hydrolyzed styrene-maleic anhydride copolymer on the surface of graphene via noncovalent interaction. The results of electrochemical measurements performed in 3.5 wt% NaCl solution indicated that the addition of well-dispersed hydrolyzed styrene-maleic anhydride copolymer functionalized graphene (SMA-graphene) into waterborne organic silicone resin system remarkably improved anticorrosion performance compared with pure waterborne organic silicone resin coating. This significantly enhanced corrosion protection is mainly due to the longer and circuitous diffusion pathway of the corrosive medium derived from highly dispersed SMA-graphene sheets in the composite coating.

Compatibilization of poly(lactic acid)/polycarbonate blends by different coupling agents

In this study, PLA/PC blends were prepared in order to investigate the effects of the addition of PC loading level into PLA matrix on the mechanical properties of these blends. After that, PLA/PC (70/30), which has the lowest tensile strength value, was selected as a control sample for the compatibilization study. Commercial styrene-acrylic multi-functional-epoxide oligomeric agent (SAmfE), styrene maleic anhydride copolymer (SMA), tetrasilanol phenyl polyhedral oligomeric silsesquioxane (T-POSS) and glycidyl isooctyl-polyhedral oligomeric silsesquioxane (G-POSS) were used as compatibilizers for PLA/PC blends. The variation of mechanical, thermal, structural and morphological properties were examined by conducting tensile tests, dynamic mechanical analyses, differential scanning calorimetry, Fourier Transform IR and scanning electron microscope analyses. Tensile test results showed that the tensile strength and elongation at break values of the PLA/PC blend compatibilized with SAmfE were higher than those of the other blends. DSC analyses revealed that Tg and Tm values of the blends were not significantly affected by compatibilizer but, degree of crystallinity was found to be sensitive to compatibilizer type. DMA results showed that the best mechanical properties were obtained for the PLA/PC/SAmfE blend. When all of the results evaluated, it was found that the SAmfE is the most effective compatibilizer among the using compatibilizer types for PLA/PC blends.

Investigating the synergistic effect between oil soluble surfactants and styrene–maleic anhydride copolymers to enhance the flow properties of waxy crude oil

ABSTRACTStyrene–maleic anhydride (SMA) copolymer is prepared and then reacted with octadecyl alcohol SMASA, hexadecylamine SMACA, benzyl alcohol SMABA, and aniline SMAAn to obtain four copolymers. Three oil soluble surfactants are prepared by esterification of mono-, di-, and triethanolamine with oleic acid MEAO, DEAO, and TEAO. The structure of the prepared copolymers is characterized using spectroscopic techniques such as infra-red (FTIR), 1H nuclear magnetic resonance (NMR), and gel permeation chromatography (GPC). The prepared copolymers are evaluated individually as flow improvers then mixed with surfactants. From the results, it is found that the copolymer with aliphatic side chain SMACA exhibited the maximum pour point depression (ΔPP = 21°C at 1,500 ppm), whereas the rest copolymers SMASA, SMABA, and SMAAn exhibited the same pour point depression ΔPP = 18°C at 1,500 ppm. Moreover, the blend (B4) between SMACA and TEAO exhibited the maximum pour point depression ΔPP = 27°C.

Study of the Preparation and Dielectric Property of PP/SMA/PVDF Blend Material

Polypropylene (PP) and polyvinylidene fluoride (PVDF) polymer materials have been widely used because PP has excellent piezoelectricity and PVDF has a robust tensile strength. However, few studies have been reported about PP/PVDF blends, and the main issue has proven to be the interfacial compatibility of blends. This research investigated the microstructure of blends to characterize their compatibility. X-ray diffraction (XRD) and scanning electron microscope (SEM) analysis showed the poor interactions between PP and PVDF interface, and thus this study adopted styrene maleic anhydride (SMA) copolymer as compatibilizer to modify the properties of blends. The XRD and SEM investigations showed an enhancement in the interactions between PP and PVDF after the addition of SMA. The dielectric properties of PP/SMA/PVDF blends showed a significant increase when PP content was 40%–60% and the dielectric constant (ε) was up to 13; meanwhile, the dielectric loss (tanδ) of PP/SMA/PVDF was lower than PP/PVDF blends.

Surface Modification of Nanoclays with Styrene-Maleic Anhydride Copolymers

This study presents the modification of surfaces of nanoclays, halloysite nanotubes (HNT) and sepiolite (SEP), with styrene-maleic anhydride copolymers (SMA) via esterification reaction between hydroxyl groups of the nanoclays and anhydride groups of SMA. The structural, thermal, and morphological analyses of the modified nanoclays were performed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), thermal gravimetric analysis (TGA), and field emission scanning electron microscopy (FESEM). All of these results suggested that the expected modification of HNT and SEP surfaces were performed. Although XRD patterns of HNT containing samples showed that the basal spacing shifted to higher distances, it was found that those of the crystalline structure of SEP remained unchanged. Thermal gravimetric analysis exhibited that SMA copolymers were grafted onto the surfaces of nanoclays varying amounts between 15 and 43 wt. % depending on the types of nanoclays and SMA copolymers. This modification indicates that these nanoclays can be added to the polystyrene matrix without any compatibilizers.

Grafted Epoxide Functionalized Polypropylene Carbonate Porogen for Low Dielectric Constant Epoxy Films

A nanoporous epoxy film was formulated by using chemically modified epoxide-terminated polypropylene carbonate (ePPC) as the porogen in an epoxy resin formulation. The ePPC was grafted onto styrene maleic anhydride (SMA) copolymer and further used to chemically crosslink with poly(bisphenol A diglycidyl ether) (pBPADGE). The SMA-pBPADGE crosslinking was initiated with a tertiary amine catalyst. After curing of the pBPADGE resin film, the ePPC was thermally decomposed and created volatile, small molecules that diffused through the film leaving a nanoporous epoxy film. The pore size distribution within the epoxy film with ePPC loadings of 5 to 20 wt% after thermal degradation of the porogen was mostly between 6 to 18 nm as measured by nitrogen absorption experiments. The dielectric constant of the resulting 20% porous epoxy film was 2.77 and dielectric loss of 0.015. Mechanical properties and glass transition temperature of the cured film decreased slightly compared to the same film without pores. The reduced modulus of the epoxy film with 20% pore volume was 8 GPa and the glass transition temperature of 142°C.

Feasibility of Using Foamed Styrene Maleic Anhydride (SMA) Co-polymer in Wood Based Composites

Feasibility of Using Foamed Styrene Maleic Anhydride (SMA) Co-polymer in Wood Based Composites

Studies on adsorption behavior of Cu (II) and Cd (II) onto aminothiophene derivatives of Styrene Maleic anhydride copolymer

In this research Poly (styrene-maleic anhydride) (SMA) copolymer was chemically modified with two amino thiophene derivatives; ethyl 2-amino 4, 5, 6, 7-tetrahydrobenzo thiophene-3 carboxylate (EATTC) and of 2-amino 4, 5, 6, 7-tetrahydrobenzo thiophene- 3 cabonitrile (ATTCN). The obtained products SMA-N- thioph- COOEth (E1) and SMA-N- thioph- CN (E2) were investigated by means of IR, NMR, X-ray diffraction (XRD), thermogravimetric and elemental analysis. The adsorption properties of the products toward Cu (II) and Cd (II)ions were evaluated. Various factors affecting the uptake behavior such as pH, concentration and adsorption time on the extent of Cu (II) and Cd (II) absorption were studied. It was found that Cu absorption is higher than that of Cd which may be attributed to the larger size of Cd ions. The equilibrium removal performance of the SMA modified copolymer is analyzed according to the Langmuir and Freundlich adsorption isotherm models that show result fitted to both models. The experimental results showed that copper absorption by the SMA modified copolymer was achieved in 60min and that the loading capacity reached 453 and 110mg g−1for Cu (II) and Cd (II) respectively, at pH 5-6 which was found to be an optimum condition.

Self-healing antimicrobial polymer coating with efficacy in the presence of organic matter

A method to prepare a self-healing, antimicrobial polymer coating that retains efficacy against Escherichia coli O157:H7 in the presence of organic matter is reported. A coating composed of branched polyethyleneimine (PEI) and styrene maleic anhydride copolymer (SMA) was applied to a maleic anhydride functionalized polypropylene support. The chemistry of the polymer coating was designed to impart hydrophobicity due to the styrene subunits, intrinsic antimicrobial character (>99.9% reduction) from the cationic primary amine groups, and enhanced antimicrobial character (>99.99% reduction) after chlorination of N-halamine forming groups. Antimicrobial effectiveness was demonstrated under conditions of increasing organic load. Up to 500ppm horse serum, chlorinated coatings retained full antimicrobial character (>99.99% reduction). Even at 50,000ppm of horse serum, the coating provided ∼90% reduction as prepared, and between ∼75% and ∼80% reduction in the form of N-halamines. Microscopy confirmed no evidence of bacterial adhesion on the coating surface. Finally, the coating exhibited self-healing properties after exposure to acid and alkaline solutions and restoration by heat, as confirmed through spectroscopy from the rebuilding of characteristic chemical bonds. Such robust antimicrobial polymer coatings with efficacy under conditions of increasing organic load may support reducing microbial cross-contamination in food and biomedical industries.

Wood–plastic composites as potential applications of recycled plastics of electronic waste and recycled particleboard

Wood–plastic composites were injection-molded from recycled acrylonitrile–butadiene–styrene and polystyrene from post-consumer electronics in the interest of resource efficiency and ecological product design. The wood content was raised in two steps from 0% to 30% and 60%. Reinforcement performance of recycled particleboard was compared to virgin Norway spruce. Styrene maleic anhydride copolymer was used as the coupling agent in the composites with a 60% wood proportion to investigate the influence on interfacial adhesion. The composites were characterized by using physical and mechanical standard testing methods. Results showed increased stiffness (flexural and tensile modulus of elasticity), water uptake and density with the incorporation of wood particles to the plastic matrices. Interestingly, strength (flexural and tensile) increased as well. Wood particles from Norway spruce exhibited reinforcement in terms of strength and stiffness. The same results were achieved with particleboard particles in terms of stiffness, but the strength of the composites was negatively affected. The coupling agent affected the strength properties beneficially, which was not observed for the stiffness of the composites. The presence of cadmium, chromium, copper, arsenic and lead in the recycled resources was found by an elementary analysis. This can be linked to color pigments in recycled plastics and insufficient separation processes of recycled wood particles for particleboard production.

An efficient nanofiltration membrane based on blending of polyethersulfone with modified (styrene/maleic anhydride) copolymer

In this study, styrene–maleic anhydride (SMA) copolymer was modified by ring opening reaction of its anhydride groups with diethanolamine (DEA). The modified SMA copolymer was blended in different concentrations (2.5, 4 and 5.5 %) with Polyethersulfone (PES) to improve the hydrophilicity of PES membranes and the corresponding blend membrane was prepared through phase inversion. The influence of SMA copolymer on morphology, mechanical properties, water flux, rejection and anti-fouling properties of blend membrane were investigated. The modified SMA and their composition were confirmed by FT-IR and 1HNMR techniques. The asymmetric structure of membrane was revealed by SEM. The water flux and contact angle results show that the hydrophilicity of membrane surface was increased by addition of SMA copolymer. The better anti-fouling properties of the PES/modified SMA blend membranes in comparison with the PES membrane also confirmed that the hydrophilicity of blend membrane enhances.

Glycerine Treated Nanofibrillated Cellulose Composites

Glycerine treated nanofibrillated cellulose (GNFC) was prepared by mixing aqueous nanofibrillated cellulose (NFC) suspensions with glycerine. Styrene maleic anhydride (SMA) copolymer composites with different loadings of GNFC were prepared by melt compounding followed by injection molding. The incorporation of GNFC increased tensile and flexural modulus of elasticity of the composites. Thermogravimetric analysis showed that as GNFC loading increased, the thermal stability of the composites decreased marginally. The incorporation of GNFC into the SMA copolymer matrix resulted in higher elastic modulus (G′) and shear viscosities than the neat SMA copolymer, especially at low frequencies. The orientation of rigid GNFC particles in the composites induced a strong shear thinning behavior with an increase in GNFC loading. The decrease in the slope of elastic modulus with increasing GNFC loading suggested that the microstructural changes of the polymer matrix can be attributed to the incorporation of GNFC. Scanning electron microscopy (SEM) images of fracture surfaces show areas of GNFC agglomerates in the SMA matrix.

Styrene Maleic Anhydride formulated polyelectrolyte hydrogel with selective antimicrobial property, potentially favorable for the application as female contraceptive implant

Event Abstract Back to Event Styrene Maleic Anhydride formulated polyelectrolyte hydrogel with selective antimicrobial property, potentially favorable for the application as female contraceptive implant Bhuvaneshwaran Subramanian1, 2, Arun Prabhu Rameshbabu1, Kuntal Gosh3, M Selvakumar4, Piyali Basak2, Santanu Dhara1 and Sujoy K Guha1 1 Indian Institute of Technology Kharagpur, School of Medical Science and Technology, India 2 Jadavpur University, School of Bio-Science and Engineering, India 3 Vidyasagar University, Department of Microbiology, India 4 Indian Institute of Technology Kharagpur, Rubber Technology Centre, India Introduction: Polymeric implants like Intra Uterine Contraceptive Devices (IUD) is one among the most popular female contraceptive method. IUD associated Reproductive Tract Infections (RTI) are prominent worldwide issue associated with IUD using women[1]. Healthy human reproductive tract is colonized by variety of bacterial species with lactobacilli as a predominant and beneficial group of microorganisms. Opportunistic pathogens like Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, etc are associated in the pathogenesis of IUD associated reproductive tract infection[2]. Herein we evaluated the antimicrobial activity of styrene maleic anhydride copolymer hydrogel formulation against opportunistic pathogens like E. Coli, S. aureus, P. auregenosa as well as specifying its safety towards healthy human lactobacillus[3]. Spreadability and rheological characterization of the hydrogel formulation with Simulated Uterine Fluid (SUF) was analyzed. Gelation kinetics, shear rate dependent viscosity were measured for studying retention potency of the hydrogel post implantation[4]. Toxicity evaluation on uterine primary cell lines revealed no significant toxicity observed by the polyelectrolyte polymeric hydrogel. Materials and Methods: Bacterial colonies isolated from frozen stock were restreaked on their corresponding agar plates. All the test organisms were exposed to hydrogel. Zone of incubation was measured using Vernier calipers after incubation. Direct contact inhibition studies were performed using time kill method with little modifications. Each test bacteria included a growth control without a test sample as negative control. At 0-, 1-, 6-, 9- and 24- hour time intervals, 300µL of the test bacteria culture was removed for viable cell enumeration by drop plate counting method. In order to observe the rate of gelation in accordance with time, the gelation forming ability was studied through complex modulus (G*) and complex viscosity (η*) against time sweep measurement in the linear viscoelastic range (at frequency 1 Hz and shear stress of 10 Pa) before and after addition of SUF (pH 7.6) at 37oC. Test samples its dilutions showed shear thinning behavior due to the gradual reduction of viscosity by increasing the shear rate. The shear rate dependent viscosity of hydrogel and its dilutions show shear thinning behavior. Toxicity of hydrogel test samples were analysed on endometrial primary cell lines for 6, 24 and 48 hours. Results and Discussion: Agar well diffusion and indirect assay of polymeric hydrogel at 3% inhibited the growth of E.coli, S.aureus, P.auregenosa and that the tested Lactobacillus species can tolerate. Addition of SUF in polymeric hydrogel resulted in instantaneous gel formation in which is evidenced by the rapid rise in G* and η* demonstrating the viscoelastic nature of the gel. Test samples its dilutions showed significant spreadability and shear thinning behavior due to the gradual reduction of viscosity by increasing the shear rate. The shear rate dependent viscosity of hydrogel and its dilutions show shear thinning behavior . Indirect hydrogel exposure assay showed no significant toxicity in the endometrial cell lines at different time intervals. Conclusion: These in vitro characterization results have inference for the efficiency of polyelectrolyte hydrogel to retain in upper reproductive tract for extended duration after implantation without producing any significant level of toxicity. Ministry of Health and Family Welfare, Government of India

Preparation and Characterization of Reconstituted Lipid-Synthetic Polymer Discoidal Particles.

Discoidal high-density lipoproteins generated by the apolipoprotein-mediated solubilization of membrane lipids in vivo can be reconstituted with phospholipids and apolipoproteins in vitro. Recently, it has been reported that such particles can be prepared using the hydrolyzed acid form of styrene-maleic anhydride copolymer (SMAaf) instead of apolipoproteins, but characterization of its physicochemical properties has remained less elucidated. In the present study, with the aim of applying SMAaf-based lipid nanoparticles as novel delivery vehicles of drugs and/or imaging agents, we investigated the preparation conditions and evaluated the physicochemical properties of lipid-SMAaf complexes. SMAaf induced spontaneous turbidity clearance of dimyristoylphosphatidylcholine (DMPC) vesicles accompanied by the formation of smaller particles not only at the phase transition temperature of DMPC but also above it. Such reductions in the turbidity were not observed with some other amphiphilic synthetic polymers tested under the same experimental conditions. Size exclusion chromatography analyses showed that homogeneously sized particles were prepared at lipid to SMAaf weight ratios of less than 1/1.5. Dynamic light scattering and transmission electron microscopy revealed that gel-filtered DMPC-SMAaf complexes were approximately 8-10 nm in diameter and discoidal in shape. The DMPC-SMAaf complexes were relatively stable even after lyophilization but were sensitive to pH changes. Fluorescence techniques demonstrated that the gel to liquid-crystalline phase transition temperature of DMPC in the discoidal complexes broadened significantly relative to that of liposomes, despite their common bilayer structure, which is a typical feature of discoidal lipid nanoparticles. These results provide fundamental insights into discoidal SMAaf-based lipid nanoparticles for the development of novel delivery vehicles.

Application of Subcritical Water Hydrolysate from Thermosetting Polyester Resin to Aqueous Agents

Thermosetting polyester resin used in fiber reinforced plastic (FRP) is very difficult to be recycled since it cannot be re-molded like thermoplastic resin. In recycling thermosetting polyester resin, subcritical water with alkali was applied to hydrolyze ester bonds to obtain styrene-fumaric acid copolymer (SFC). SFC, subcritical water hydrolysate from thermosetting polyester resin, has a molecular structure of functional polymer. Alkali salt of the SFC has a same molecular structure as alkali salt of styrene-maleic anhydride copolymer (SMA) which is widely used in various kinds of high performance additives for aqueous applications. In these applications, dispersing agent, detergent builder, and surface sizing agent were selected for application of alkali salt of the SFC . The reaction product liquid contains sodium salt of SFC (SFC-Na). It was evaluated as dispersing agent and detergent builder. Ammonium salt of SFC (SFC-NH4) was evaluated as surface sizing agent for paper. The evaluation results were compared with that of commercial additives to verify the possibility to substitute them. The reaction product liquid showed superior dispersing effect to commercial dispersing agent for hydrophobic powder. It also showed superior alkali buffering capacity to commercial detergent builder. SFC-NH4 showed higher sizing effect than commercial sizing agent.

Preparation of polyethylene-graft-clay nanocomposites using Friedel–Crafts alkylation reaction as a new method

The main objective of this study was chemical grafting of polyethylene (PE) chains onto clay surfaces in PE/clay nanocomposites. Clay (Cloisite 30B) particles were successfully modified using a laboratory-synthesized carboxylic acid end-functionalized polystyrene (F-PS) and a commercial styrene–maleic anhydride copolymer (SMA). SMA showed higher grafting efficiency than F-PS. It is related to lower molecular weight and higher compatibility of SMA with Cloisite 30B particles. Both modified Cloisite 30B particles were used in preparation of PE nanocomposites where AlCl3 catalyst was used for chemical grafting of PE chains onto polystyrene (PS) or SMA chains, pendant from the clay particles surfaces. Using AlCl3 increased the storage modulus and decreased the damping factor, particularly at low-frequency ranges. It was related to the chemical grafting of the PE chains onto the PS segments of the SMA copolymer and the PS chains of F-PS on the clay particle surfaces via Friedel–Crafts alkylation reaction. Catalyzed nanocomposites showed better clay dispersion than those of the plain nanocomposites. It is believed that chemical grafting of PE chains onto clay particles surfaces provided effective stress transfer from PE matrix to clay tactoids resulting in delamination and higher degree of clay exfoliation.

Joint Effect of Compatibilizer and Organo-Montmorillonite on Compatibilization of Polyamide-6/Poly(phenylene oxide) Blend: Morphology and Properties

Compatibilizer (styrene–maleic anhydride copolymer, SMA) and organo-montmorillonite (OMMT) were introduced into immiscible polyamide-6 (PA6)/ poly(phenylene oxide) (PPO) blend to obtain quaternary nanocomposites simply by melt extrusion. OMMT tactoids formed in PA6/PPO/OMMT ternary blend would become smaller or disappear with the addition of SMA. Besides, viscosity of SMA compatibilized PA6/PPO blend decreased a lot with the addition of OMMT. Based on these results, a mechanism for joint effect of SMA and OMMT in compatibilizing PA6 and PPO was proposed. We further studied water absorption and tensile properties of the nanocomposites, which were in consistent with the proposed mechanism.

Antimicrobial coatings with dual cationic and N-halamine character: characterization and biocidal efficacy.

A method to prepare an antimicrobial coating for food-handling materials is reported. Alternating layers of branched polyethylenimine and styrene maleic anhydride copolymer were applied onto the surface of polypropylene. The resulting coatings had low surface energy and presented enhanced antimicrobial character due to the presence of both cationic and N-halamine forming structures. In its unchlorinated form, the coating inactivated Listeria monocytogenes by ∼3 logarithmic cycles. In the form of N-halamines >5 logarithmic cycles were reached. Microbial inactivation kinetics showed a Weibullian behavior when the coating was unchlorinated and a sigmoidal behavior when chlorinated. Microscopy confirmed that the reduction in the microbial load was due to biocidal effects of the coating and not bacterial adhesion onto the modified surface. The modified surface was able to be repeatedly rechlorinated. Such rechargeable antimicrobial coatings may support improving food safety by reducing cross-contamination of microorganisms from food-processing equipment.