Thermally stable antimicrobial PVC/maleimido phenyl urea composites View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2014-11

AUTHORS

Nadia A. Mohamed, Nahed A. Abd El-Ghany, Mona M. Fahmy, Marwa H. Ahmed

ABSTRACT

Four novel antimicro bial maleimido phenyl urea derivatives were synthesized from N-[4-(chlorocarbonyl) phenyl] maleimide with phenyl urea derivatives (p-methyl, o-chloro and p-carboxy). They were characterized by FTIR, 1H-NMR, mass spectra, elemental analyses and antimicrobial activities. These derivatives were investigated as thermal stabilizers for rigid poly(vinyl chloride) at 180 °C in air by measuring the rate of dehydrochlorination and the extent of discoloration. The results reveal the greater stabilizing efficiency of the investigated derivatives as shown by their longer thermal stability periods (Ts) and lower dehydrochlorination rates in relation to dibasic lead carbonate, cadmium-barium-zinc stearate and n-octyltin mercaptide industrial stabilizers. The stabilizing efficiency increases with the introduction of electron donating substituent groups in the aromatic ring of the stabilizer molecules. Moreover, the investigated stabilizers impart better color stability for the degraded samples as compared with the reference stabilizers. More... »

PAGES

2833-2849

Journal

TITLE

Polymer Bulletin

ISSUE

11

VOLUME

71

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00289-014-1225-z

DOI

http://dx.doi.org/10.1007/s00289-014-1225-z

DIMENSIONS

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