The freshly harvested Carambola (Averrhoa Carambola L.) fruits were packed in different packaging matrials like high density polyethylene (HDPE) with a 1% and 2% ventilation with a pretreatment 2 % CaCl2 stored at ambient and also in refrigerated conditions the temperature was in the range of 18.0 to 21.0 0 C and Relative humidity of about 86 per cent. To evaluate the storage condition and pret...

Numerical simulation of migration of chemical substances from HDPE into foods(simulants)is performed based on the finite element method(FEM). The results show that concentration of migrants in foods at equilibrium increases with the increase of its initial concentration in packaging. Diffusivity of migrants is key to migration dynamics. Partition coefficient represents ration of concentration i...

HDPE monofilaments were photostabilized with hindered amine l ight s tabi l izers (HALS) and UV absorbers at varying stabilizer concentrations. The filaments were assessed for UV resistance by exposure to simulated outdoor weathering conditions in artificial weathering apparatus and testing the exposed samples at regular intervals for retained tensile properties. Films of HDPE of varying thickn...

Disentangled ultrahigh molecular weight polyethylene dUHMWPE (Mw ∼ 2.106 Da) particles in a reactor blend with HDPE are catalytically prepared from ethylene, mediated by new catalyst N,N'-(2,6-pyridinediyl diethylidyne) bis[2,6-di-3-propenyl-benzenamine] iron dichloride and triethyl aluminum. These could be laser sintered, but not automatically processed an SLS machine. The same supported on mi...

AkzoNobel’s range of organic peroxides for the crosslinking of elastomers and thermoplastics is the world’s largest, including a number of organic peroxides for the production of PEX-a pipes and tubes. Our products are marketed under the well-known trademark of Trigonox. When producing PE pipes and tubes, frequently high density polyethylene (HDPE) is used. To further improve the product proper...

Plastic waste management has become a pressing global issue. A viable and sustainable alternative to incineration is the conversion of polyethylene into chemicals or fuels by through hydrocracking. To improve catalytic performance during hydrocracking, bifunctional catalysts are required, in which zeolite imparts acid function, metallic function provided noble transition metal, such as nickel. ...

an essential characteristic for high performance inherently hydrophobic membranes such as microporous high density polyethylene (hdpe) membranes is to have a hydrophilic surface. in this project, wet chemical functionalization as a facile and effective method was developed to give a hydrophilic property to hdpe membranes using polar functional groups. kclo3, k2cr2o7 and kmno4 were selected as o...

Polyurethane (PU) is a very popular polymer that is used in a variety of applications due to its good mechanical, thermal, and chemical properties. However, PU recycling has received significant attention due to environmental issues. In this study, we developed a recycling method for waste PU that utilizes the radiation grafting technique. Grafting of waste PU was carried out using a radiation ...

The purpose of this study was to investigate the validity of infrared tympanic temperature (IR T(ty)) as a thermal index to evaluate the heat strain of workers in hot environments, in comparison with rectal temperatures at various depths (T(re-4, -8, and -16) for 4, 8 and 16 cm from the anal sphincter). Eight males underwent twelve experimental conditions: two activities (rest and exercise) × t...

The experiment was conducted in three model drinking water distribution systems (DWDSs) made of unplasticized polyvinyl chloride (PVC), silane cross-linked polyethylene (PEX) and high density polyethylene (HDPE) pipes to which tap water was introduced. After 2 years of system operation, microbial communities in the DWDSs were characterized with scanning electron microscopy, heterotrophic plate ...