Novel Active Surface Prepared by Embedded Functionalized Clays in an Acrylate Coating.
The research on a self-decontaminating surface has received significant attention because of the growth of pathogenic microorganisms on surfaces. In this study, a novel and simple technique for producing an active surface with antimicrobial functionality is demonstrated. A tethering platform was developed by grafting the biocide ampicillin (Amp) to a nanoclay and dispersing the nanoclay in a UV-curable acrylate coating applied on polypropylene films as the substrate. A coupling agent, [3-(glycidyloxy)propyl]trimethoxysilane, was used as a linker between the nanoclay and Amp. The Amp-functionalized clay was further modified with an organic surfactant to improve the compatibility with the coating. Several characterization assays, such as Fourier infrared transform analysis, thermogravimetric analysis, and X-ray diffraction, were conducted to confirm the presence of Amp in the nanoclay. Transmission electron microscopy images revealed that the clay particles were well dispersed in the coating and had a partial exfoliated morphology. The active coating surface was effective in inhibiting the growth of Gram-positive Listeria monocytogenes and Gram-negative Salmonella Typhimurium via contact. These findings suggest the potential for the development of active surfaces with the implementation of nanotechnology to achieve diverse functionalities.
School of Packaging, Michigan State University , East Lansing, Michigan 48824, United States.
Yining
Y
Xia
School of Packaging, Michigan State University , East Lansing, Michigan 48824, United States.
Mehran
M
Ghasemlou
School of Packaging, Michigan State University , East Lansing, Michigan 48824, United States.
Maria
M
Rubino
School of Packaging, Michigan State University , East Lansing, Michigan 48824, United States.
Rafael
R
Auras
Coatings Research Institute, Eastern Michigan University , Ypsilanti, Michigan 48197, United States.
Jamil
J
Baghdachi
D000179:Acrylates / Q000737:chemistry*; D000362:Agar / Q000737:chemistry; D000538:Aluminum Silicates; D000667:Ampicillin / Q000737:chemistry*; D001422:Bacterial Adhesion / Q000187:drug effects*; D000077215:Clay; D004058:Diffusion; D008089:Listeria monocytogenes / Q000187:drug effects; D008422:Materials Testing; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods; D011108:Polymers / Q000737:chemistry; D011126:Polypropylenes / Q000737:chemistry; D012486:Salmonella typhimurium / Q000187:drug effects; D012821:Silanes / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry; D013818:Thermogravimetry; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction
C403136:3-glycidoxypropyltrimethoxysilane; D000179:Acrylates; D000538:Aluminum Silicates; D011108:Polymers; D011126:Polypropylenes; D012821:Silanes; D013501:Surface-Active Agents; D000667:Ampicillin; D000362:Agar; C036658:acrylic acid; D000077215:Clay
acrylate coating; active surface; ampicillin; covalent grafting; nanoclay