Anti-Bacterial Efficacies and Discolorations of Polypropylene Doped with HPQM Based Water Solution and Neusilin

Abstract:

2Hydroxypropyl3PiperazinylQuinoline Carboxylic acid Methacrylate (HPQM), as one of the most effective anti-bacterial agents was introduced into polypropylene (PP) for the aim of anti-bacterial improvement. HPQM based water (HPQM-Solution) and HPQM based magnesium aluminometasilicate or Neusilin (HPQM-Neusilin) were supplied in the forms of liquid and solid powder, respectively. Physical appearances by means of discolorations of PP after introducing the HPQM-Solution or Neusilin were also investigated. Halo test and the dynamic shake flask methods accompanying with plate count agar technique were used for quantitative anti-bacterial performance analyzes and the results were reported in terms of radius of inhibition zone and percentage of bacteria reduction. HPQM-Neusilin samples showed obvious and better anti-bacterial performance as compared with the HPQM-Solution samples. The results by dynamic method suggested that the anti-bacterial efficacies of the HPQM-Neusilin samples were three times higher than those of the HPQM-Solution. To achieve the 99.9% of bacteria reduction, the optimum concentration of HPQM-Solution and HPQM-Neusilin required were 7,500 and 2,500 ppm, respectively. The addition of HPQM-Neusilin considerably changed the total color difference (ΔE*), the lightness (L*) and chromatic coordinate values (a* and b* values) of the PP, the effect being less pronounced in the case of HPQM-Solution.

• Periodical: Advanced Materials Research (Volume 747)
• Pages: 501-504
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.747.501
• Online since: August 2013
• Authors: Ariya Sributr, Atthapong Gitchaiwat, Apisit Kositchaiyong, Savaeng Techangamvong, Weawboon Yamsaengsung, Narongrit Sombatsompop
• Keywords: Color Change, HPQM, Magnesium Aluminometasilicate, Neusilin, Polypropylene (PP)

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