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Multi Scale Aging Study of Copolymer PP/PE Matrix in Tropical Environment

Phenomenon happening at nanometric scale during aging of organic matrix composites are not fully understood mainly because of the spatial localization of the interphase region, which thickness ranges between 10 and 300 nm [1]. Development of investigation methods to study the evolution of nanometric properties of polymeric materials represents therefore a key point for these materials improvement regarding durability. Moreover, tropical climate is characterized by high temperatures, high relative humidity and solar irradiation up to 200kWh/m2 [2]. Such conditions are extremely aggressive for polymeric materials in terms of aging and durability. International standards for lifetime prediction of most polymeric materials are also developed for continental or temperate regions and therefore, often conduct to underestimate the material lifetime in tropical environment. This misestimation contribute to the high plastic waste generation for the Caribbean region which was assessed to be around 1.5 million tons per year in 2010 [3]. Use of durable materials would contribute to reduce the amount of wastes and therefore generate savings for local actors.