نتایج جستجو برای: polyolefins

تعداد نتایج: 352  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2004
mahmood torabi angaji hamid reza hagheeghatpadjooh

it has been proven that polyolefins specially low density polyethylene (ldpe), are resistant against degradation and microorganism attacks; thus, one of the most important properties of industrial plastics, is their environmental biodegradability. since plastics are being widely used in agriculture, horticulture and packaging, meeting this requirement becomes increasingly dificult (specially in...

Journal: :Chemical Engineering Research & Design 2021

Abstract The effect of pre-degradation treatment in catalytic pyrolysis polymer was assessed using thermogravimetric analysis (TGA) and reactor experiments different polymers on various catalysts. Intimate contact between the catalyst achieved physical, mechanical thermal treatments. results from TGA show that has greatly improved performance attaining maximum degradation at lower temperature. ...

Journal: :Advanced industrial and engineering polymer research 2021

Since recycling of polymers is a preferred means reducing unwanted wastes and land-filling activity, recovering monomers or other materials economic value, tertiary methods (chemical recycling) have been critically reviewed, giving special attention, in each case, to the chemical basis particular pathway its potential applicability. Recycling issues widely used commodity – polyesters, polyamide...

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