Preparation and Properties of BMH-PE Antibacterial Films

BMH is a new type of inorganic antibacterial agent. However, there is few study about BMH application in plastic film. So, in this study, BMH/PE films prepared by rolled was investigated in antimicrobial, mechanical and optical properties with different BMH contents. The results showed that the antibacterial properties increased with the BMH content, and the antibacterial films had strong antibacterial function when the adding amount of BMH was equal or greater than 2%. The mechanical properties firstly increased with the BMH content and then rapidly decreased. The optical properties decreased with BMH content. Taking all properties of the film into account in the study, the antimicrobial film contained 1% BMH was best.

Research on Progress and Possibility of Electrospining of Native Cellulose and Preparation of Copper-Based Antimicrobial Fiber

Electrostatic spinning is now recognized as a versatile and easily feasible method for the preparation of micro and nanofibrous materials. Because of their high specific surface area and highly porous structure electrospun materials can find application as wound dressings that provide good draining and good air permeability [. By adding various types of material or chemical modification in electrospun materials, we can prepare a polymer with excellent antibacterial properties of nanomaterials. Copper, an inorganic antibacterial agent, is also called the second silver. The antibacterial research of copper series attracted great concern in recent years. First, the paper introduced the progress and mechanism of electrostatic spinning of native cellulose and Cu (II) ion antimicrobial fibres, and then did a brief presentation of copper ion antibacterial fibers on the bases of electrostatic spinning of native cellulose.

Bacterial Biofilm Development on Polyethylene with Organic and Inorganic Reagents In Vitro

The antimicrobial efficacy of polyethylene (PE) with organic antibacterial agent and inorganic antibacterial agent were evaluated in this work. Moreover, inhibition to bacterial biofilm on their surfaces was investigated in detail. Our experimental results showed that both modified PE samples exhibited excellent antimicrobial performances against S. aureus and E. coli with low cell suspension. When cell suspension increased up to109 cell/ml, a large amount of bacteria (S. aureus and E. coli) and extracellular polysaccharide matrix adhered to the untreated PE and PE with inorganic antibacterial agent. On the other hand, adhesion, colonization and biofilm of S. aureus did not occur on PE with organic antibacterial agent, and a little E. coli survived on its surface. It was demonstrated that organic antibacterial agent had better ability to inhibit bacteria propagation than the inorganic one in initial time, and thus it prevented adherent bacteria to develop biofilm on the surface. The difference was derived from different initial effect time of them against bacteria. Therefore, it was a better approach to prevent catheter-related infections through addition of organic reagent into bulk material.

Preparation of Molybdates with Antibacterial Property

A series of molybdates, Ag2Mo2O7 and AMoO4 (A = Zn, Co), were prepared as a new type of inorganic antibacterial agent via wet chemical routes including hydrothermal synthesis and coprecipitation reaction. The structure and morphology of the samples were characterized with X-ray diffraction and scanning electron microscopy. The anti-bacterial properties of the molybdates against Escherichia coli and staphylococcus aureus were examined, showing good antibacterial behavior.