Yolla Kazzi

Calorimetric Approach for the Detection of Modified Silica Efficiency as Chelating Agent for Heavy Metal Ions

Yolla Kazzi & Houssein Awada · Chemical Science International Journal · 2017

Chelating molecules with carboxyhydrazide functional group was immobilised on silica surface. The functional group was covalently bonded to the silica surface by sequential reactions of silica with dibromobutane, malonic ester and hydrazine in different media. The grafting reacti...

Open access Research Article 10.9734/CSJI/2017/31105

Phenolic Foam Reinforced by Cedar’s Resin

Ramzy Hamed, Yolla Kazzi & Houssein Awada · Chemical Science International Journal · 2017

Recently phenolic foams have been received much attention because of their excellent properties including flame resistance, low density, high thermal stability over a broad temperature range and low generation of toxic gases during combustion. Cedar resin was used as a toughening...

Open access Research Article 10.9734/CSJI/2017/33377