Related Experiment Video
Updated: May 20, 2026

Inkjet-printed Polyvinyl Alcohol Multilayers
Published on: May 11, 2017
Novel antimicrobial organic thermal stabilizer and co-stabilizer for rigid PVC
Mona M Fahmy1, Riham R Mohamed, Nadia A Mohamed
1Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt.
Abstract:
Biologically active N-benzoyl-4-(N-maleimido)-phenylhydrazide (BMPH) was synthesized and its structure was confirmed by elemental analysis and various spectral tools. It was examined as a thermal stabilizer and co-stabilizer for rigid poly (vinyl chloride) at 180 °C in air. Blending BMPH with reference samples in different ratios greatly lengthens the thermal stability value and improves the extent of discoloration of PVC. TGA confirmed the improved stability of PVC in presence of the investigated organic stabilizer. GPC measurements were done to investigate the changes occurred in the molecular masses of the degraded samples of blank PVC and PVC in presence of the novel stabilizer. BMPH showed good antimicrobial activity towards two kinds of bacteria and two kinds of fungi.
Related Concept Videos
Polymer Classification: Stereospecificity
Types of Step-Growth Polymers: Polyesters
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
Anionic Chain-Growth Polymerization: Overview
Drug Product Stability
Radical Reactivity: Steric Effects
Along with electronic factors, steric factors also account...
Plasticizers
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...

