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Journal of Pharmaceutical and Applied Chemistry
An International Journal



Synthesis and antimicrobial activity of some new acredinediones derivatives

imtiyaz r. Parrey,
Abstract :
In this study we prepare different types of acredinediones derivatives. The derivatives were characterized by using different types of spectra chemical techniques like IR, NMR CHN and mass spectra. The anti-microbial activity was done using diffusion method technique. The antibiotic Streptomycin and Amphotericin was used as a standard for comparative study. All the derivatives were found active and show good antimicrobial activity.


Physical and Mechanical Characterization of Jute Fiber Reinforced Unsaturated Polyester Resin (UPR) Composites

Komol Kanta Sharker,
Abstract :
Jute fiber reinforced unsaturated polyester resin (UPR) composites were fabricated by hand lay-up technique where cobalt octoate is used as an accelerator. This work presented the UPR jute mat composite’s behaviour towards different moulding pressure and duration of moulding in mechanical and thermal properties and trying to investigate the possibility to use as a good source of natural fiber composite as well. This study reveals that with the increase of moulding load mechanical properties such as flexural strength, ultimate tensile strength (UTS), elongation is increased but with excessive moulding pressure the UPR is comes out from the composite and increases the % of fiber content which causes reduction the values of mechanical properties. We also tried to optimize the moulding load and time of pressing. Our result shows that 180KN pressure for 240 minutes gives the best mechanical and physical properties.

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