Preparation of PMMA/Nano-Cu Antibacterial Plastic by In Situ Polymerization

2017 ◽  
Vol 727 ◽  
pp. 815-818
Author(s):  
Xiao Chen ◽  
Hua Lei ◽  
Tao Xu ◽  
Jie Zhang ◽  
Yu Qiu ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Surface Treatment ◽  
Antibacterial Agent ◽  
Antibacterial Effect ◽  
In Situ Polymerization ◽  
Test Results ◽  
Strong Antibacterial Effect ◽  
Plastic Products ◽  
Antibacterial Plastic

PMMA/nanoCu antibacterial plastic was prepared by in situ polymerization using MMA as monomer, BPO as initiator and surface treated nanoCu as antibacterial agent. AMEO was used for surface treatment of nanoCu. ATR-FTIR spectra showed that AMEO successfully reacted on the surface of nanoCu. SEM spectra showed that nanoCu dispersed evenly in the PMMA/nanoCu composite. Antibacterial test results showed that the composite had a strong antibacterial effect on Escherichia coli, and the antibacterial rate reached more than 99%. Therefore, the PMMA/nanoCu composite can be used in various fields of antibacterial plastic products.

Research Progress of Surface Modification of Aluminum Powders for Corrosion Protection

2011 ◽  
Vol 80-81 ◽  
pp. 70-75 ◽  
Author(s):  
Bin Du ◽  
Shi Sheng Zhou ◽  
Na Li Li ◽  
Nan Wang
Keyword(s):  
Surface Modification ◽  
Surface Treatment ◽  
Corrosion Inhibition ◽  
In Situ Polymerization ◽  
Research Progress ◽  
Research Directions ◽  
Aluminum Powders ◽  
Plastic Industry ◽  
Weather Resistance

As an important metallic powder, aluminum powders are used widely in coating, inks and plastic industry. However, it is necessary to treat the aluminum powders first to improve the properties of weather-resistance, anti-corrosion in acidic or basic media and compatibility with resin. The methods of surface treatment of aluminum powders including encapsulation and using corrosive inhibitors are summarized. The kinds of corrosive inhibitors used in the method of corrosion inhibition and their mechanisms are also reviewed. The processes and technologies of inorganic passivation, encapsulation by polymer absorption and by in situ polymerization are introduced. The research directions of aluminum powders are also presented.

Mechanical Properties of Wood-Polymer Composite Prepared by In-Situ Polymerization of Methyl Methacryalte and Styrene

2012 ◽  
Vol 166-169 ◽  
pp. 2938-2941 ◽  
Author(s):  
Yong Feng Li ◽  
Ding Wang Gong ◽  
Xiao Ying Dong ◽  
Zhen Bo Liu
Keyword(s):  
Mechanical Properties ◽  
Polymer Composite ◽  
In Situ Polymerization ◽  
Untreated Wood ◽  
Modulus Of Rupture ◽  
Test Results ◽  
Wood Polymer ◽  
Wood Based Composite ◽  
Wood Polymer Composite

Fast-growing poplar wood, Populus ussuriensis Kom, was used to prepare novel wood-polymer composite by the in-situ polymerization of methyl methacrylate (MMA) and styrene (St). SEM observation and FTIR analysis indicated that the resulted polymer well filled up wood cell lumen and physically reinforce wood matrix. The test results also proved that the mechanical properties of wood including modulus of rupture, modulus of elasticity, compression strength and hardness of were improved by 68.28%, 110.27%, 62.43%, 357% over those of Untreated Wood, respectively. Such wood-based composite could be potentially used as reinforced material in construction fields.

Nanowires of silver–polyaniline nanocomposite synthesized via in situ polymerization and its novel functionality as an antibacterial agent

2012 ◽  
Vol 92 ◽  
pp. 35-41 ◽  
Author(s):  
Mohaseen S. Tamboli ◽  
Milind V. Kulkarni ◽  
Rajendra H. Patil ◽  
Wasudev N. Gade ◽  
Shalaka C. Navale ◽  
...  
Keyword(s):  
Antibacterial Agent ◽  
In Situ Polymerization ◽  
Polyaniline Nanocomposite

The Effects of Synthesis Conditions on PUF Microcapsule Morphology

2012 ◽  
Vol 217-219 ◽  
pp. 661-665
Author(s):  
Ning Ning Hu ◽  
Hao Han Huang ◽  
Hong Zhi Cui
Keyword(s):  
Particle Size ◽  
In Situ Polymerization ◽  
Average Particle Size ◽  
Wall Material ◽  
Average Particle ◽  
Self Healing ◽  
Test Results ◽  
Synthesis Conditions ◽  
Wide Range

In this paper, self-healing PUF microcapsules were prepared by in situ polymerization. The test results show that: 1) the ratio of core/wall material can had a significant effect on the average particle size of microcapsules. The ratio happens to be 1.0 to 1.0, best coating, relatively dense surface can be achieved. When the ratio reaches 1.4 to 1.0, the microcapsules have worst coating, particle size, distribution of wide range, and comparatively rough surface. When the ratio is 0.8 to 1.0 or 1.2 to 1.0, preferable coating, uniform particle size and its distribution, as well as smooth and dense surface can be obtained. 2) The faster the stirring speed, the smaller the particle size of microcapsule will be. And the size becomes bigger and varied with the stirring speed decreasing.

Antibacterial properties of polyaniline-silver films

2013 ◽  
Vol 67 (8) ◽  
Author(s):  
Zdenka Kucekova ◽  
Vera Kasparkova ◽  
Petr Humpolicek ◽  
Petra Sevcikova ◽  
Jaroslav Stejskal
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Effect ◽  
Antibacterial Properties ◽  
Silver Ions ◽  
Gram Positive ◽  
Pani Salt ◽  
Ag Deposition ◽  
Pani Base

AbstractIn situ polymerised thin polyaniline (PANI) films produced on polystyrene dishes were tested for their antibacterial activity with respect to Escherichia coli and Staphylococcus aureus, representing both gram-positive and gram-negative bacteria. PANI films were subsequently used for the reduction of silver ions to metallic Ag. PANI salt and base in original forms and after the deposition of Ag were studied. PANI salt showed a significant antibacterial effect against both bacteria strains while the efficacy of neat PANI base was only marginal. After the Ag deposition, the PANI base exhibited different levels of antibacterial effect depending on the type of the bacterial strain; the growth of gram-positive Staphylococcus aureus was inhibited depending on the Ag concentration on the film, while Escherichia coli remained uninfluenced. Efficacy of the PANI salt with deposited Ag against both bacteria strains was comparable with that of PANI alone and was not affected by the Ag concentration. The results show that Ag deposition can be a suitable method for the preparation of PANI base films with improved antibacterial properties.

scholarly journals Evaluations of Electrostatic Filtration Efficiency and Antibacterial Efficacy of Antibacterial Electret Polypropylene Filters: Effects of Using Low Molecular Antibacterial Agent as Additive

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3303
Author(s):  
Jia-Horng Lin ◽  
Ying-Huei Shih ◽  
Chen-Hung Huang ◽  
Mei-Feng Lai ◽  
Shu-An Lee ◽  
...  
Keyword(s):  
Antibacterial Agent ◽  
Antibacterial Effect ◽  
Filtration Efficiency ◽  
Low Molecular Weight ◽  
Test Results ◽  
Highly Qualified ◽  
Air Filtration ◽  
E Coli ◽  
Nonwoven Fabrics ◽  
Effective Additive

In recent years, air filtration has been gaining much attention, and now people are much more concerned about antibacterial filters due to the spreading of COVID-19. The electret polypropylene (PP) nonwoven fabrics possess excellent filtration efficiency but a limited antibacterial effect against S. aureus and E. coli, and therefore triclosan is used in this study. Serving as an antibacterial agent, triclosan with a low molecular weight is an effective additive for the test results, indicating that the presence of triclosan strengthens the antibacterial effects of the filters. In addition, triclosan also strengthens the PP’s crystallinity, which in turn betters the filtration efficiency of the filters concurrently. Demonstrating powerful filtration and antibacterial performances, the antibacterial electret PP filters are highly qualified for filter applications.

Antibacterial Activities of Sirih Merah (Piper crocatum) Leaf Extracts

2019 ◽  
Vol 5 (3) ◽  
pp. 1-10
Author(s):  
Puspa Julistia Puspita ◽  
Mega Safithri ◽  
Nirmala Peni Sugiharti
Keyword(s):  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Agent ◽  
Leaf Extract ◽  
Antibacterial Activities ◽  
Leaf Extracts ◽  
Herbal Plants

Piper crocatum is one of medicinal herbal plants with a large number of benefits. Usually herbal plants have activity as antibacterial agent. Therefore, the objectives of this research were to obtain information on antibacterial activities of the leaf extracts of Piper crocatum againts four types of bacteria, in that Staphylococcus, Bacillus substilis, Escherichia coli, and Pseudomonas aeruginosa and then to analyze the phytochemistry of the leaf extracts of Piper crocatum. The leaves of Piper crocatum were extracted by maceration and reflux using ethanol 30%. The assays of the antibacterial activities and phytochemistry on the extracts were carried out using the method of Maria Bintang. Results showed that the yield of the extraction using ethanol by maceration method was 20.8%. Meanwhile, using the reflux method, the yield was obtained about 26.25%. The phytochemistry analysis showed that the leaf extracts of Piper crocatum contained alkaloid, steroid and tanin. According to this study, it was found that the leaf extract of Piper crocatum can be used to inhibit the growth of B. subtilis and P. aeuruginosa, but can not inhibit the growth of E.coli and S. aureus.

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