Abstract

Polyolefin chlorination involves introducing chlorine atoms into the polymer chain which results in enhancement of specific properties of the respective polyolefin. Traditional chlorination is carried out in practice in the presence of toxic solvents which renders the process less environment friendly and highly energy intensive. The present study reports experimental investigations conducted on a potential alternative known as co-chlorination in which a polyolefin is chlorinated using paraffin as solvent. Unlike conventional solvents, paraffin also acts as a reactant and undergoes chlorination with the parent polyolefin. Low Density Polyethylene (LDPE) and Polypropylene (PP) were used as representative polyolefins in this study. Experiments were conducted at a temperature, chlorine flowrate, polyolefin concentration (in paraffin) and an agitation speed of 130 °C, 350 mL/min., 10 % and 400 rpm respectively. Comparative results based on chlorine content in the respective polyolefins post co-chlorination and product characterization using CHNS, FTIR and 1H NMR is presented.

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