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    Investigating the Chemical Degradation of Pipe Grade Polyethylene in the Chlorinated Water

    , M.Sc. Thesis Sharif University of Technology Rezai Gharabaghlar, Ali (Author) ; Pircheraghi, Gholamreza (Supervisor)
    Abstract
    Polyethylene is one of the most widely used polymers for the production of drinking water pipes. The presence of chlorine-based disinfectants in drinking water leads to long-term chemical destruction of pipes and sometimes reduces the life of pipes by half. Therefore, it is very important to investigate various factors affecting the chemical resistance of polyethylene pipes. The crystalline microstructure of the substance is affected by the average molecular weight, type and distribution comonomer on the chain, is one of the important and influential factors on the chemical resistance of these species against chlorine dioxide as a disinfectant. In this research, the chemical resistance of...