نتایج جستجو برای: low density polyethylene ldpe

تعداد نتایج: 1536605  

Journal: :Applied Mechanics and Materials 2014

2017
Youyuan Wang Can Wang Zhanxi Zhang Kun Xiao

This paper investigates the morphology, thermal, and electrical properties of LDPE (low-density polyethylene)-based nanocomposites after thermal aging. The FTIR (Fourier transform infrared spectroscopy) spectra results show that thermo-oxidative reactions occur in neat LDPE and LDPE/SiO₂ nanocomposites when the aging time is 35 days and in LDPE/MgO nanocomposites when the aging time is 77 days....

Hamid Reza Hagheeghatpadjooh Mahmood Torabi Angaji,

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 (speciall...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1997
rouhallah bagheri faranak naimian nassrin sheikh

acrylamide was grafted in low density polyethylene during melt processing in the presence of a free radical initiator using a torque rheometer in a closed system. effects of processing time, acrylamide and benzoyl peroxide concentrations were studied. ftir studies revealed that the degree of grafting increased by an increase in acrylamide concentration. maximum grafting was obtained at 7 minute...

Journal: :polyolefins journal 0
mohammadreza rahnama department of plastics engineering, iran polymer and petrochemical institute, p.o.box14975/112, tehran, i.r. iran abdulrasoul oromiehie department of plastics engineering, iran polymer and petrochemical institute, p.o.box14975/112, tehran, i.r. iran shervin ahmadi department of plastics engineering, iran polymer and petrochemical institute, p.o.box14975/112, tehran, i.r. iran ismaeil ghasemi department of plastics engineering, iran polymer and petrochemical institute, p.o.box14975/112, tehran, i.r. iran

in this research, high oxygen-barrier films were organized based on low-density polyethylene (ldpe)/ ethylene vinyl alcohol (evoh)/ polyethylene-grafted maleic anhydride (ldpe-g-ma) compatibilizer. the effects of 10–30 wt. % evoh and 0–10 wt. % ldpe-g-ma loadings on the properties of final films were evaluated. the morphology of specimens was observed by using scanning electron microscopy (sem)...

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...

2017
Shraddha Awasthi Neha Srivastava Tripti Singh D. Tiwary Pradeep Kumar Mishra

Polythene is considered as one of the important object used in daily life. Being versatile in nature and resistant to microbial attack, they effectively cause environmental pollution. In the present study, biodegradation of low-density polyethylene (LDPE) have been performed using fungal lab isolate Rhizopus oryzae NS5. Lab isolate fungal strain capable of adhering to LDPE surface was used for ...

2008
Mohammed A. Suleiman Ibnelwaleed A. Hussein

The influences of short chain branching (SCB) and molecular (Mw) weight of low density polyethylene (LDPE) on the solid state properties of polypropylene (PP)-LDPE blends were investigated by mechanical and thermal techniques. DSC analysis of all blends exhibit a double melting peak at all compositions studied thus suggesting that both PP and LDPE crystals exist separately in the solid state. I...

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