Abstract
Recycled polystyrene is used to form moulds in various forms used as food containers. In this paper, we are reporting on the suitability of recycled polystyrene and virgin polystyrene used for manufacturing food containers in Pakistan. These polystyrene samples were kept in contact with the vegetable oil at different temperatures ranging from 15-100 degrees C. These samples were analyzed by FT-IR and viscometer. The study demonstrates that recycled polystyrene undergoes some thermal degradation during recycling and the food containers prepared from these materials should not be used for storage of oily food at high temperature.