scholarly journals Fotodegradasi High Density Polyethylene Yang Mengandung Aditif Okso-Biodegradasi

2017 ◽  
Vol 4 (2) ◽  
pp. 402-405
Author(s):  
Ristika O. Asriza ◽  
Janiar Pitulima
Keyword(s):  
Mechanical Properties ◽  
Carbonyl Group ◽  
Wavelength Range ◽  
High Density Polyethylene ◽  
Room Temperature ◽  
Uv Light ◽  
High Density ◽  
Absorption Peak ◽  
Metal Compound ◽  
Peak Intensity

High Density Polyethylene (HDPE) is a type of plastic that widely used for packaging because it has good mechanical properties. HDPE is naturally non-biodegradable, and  the consequence it will increase plastic waste that will damage the environment. To increase their biodegradability, it is necessary to add an oxo-biodegradation additive in the form of a stearate metal compound. This oxo-biodegradation additive is a chromophore that can absorb UV light. Polyethylene oxo-biodegradation films are prepared by mixing HDPE and cobalt stearate to homogeneous on various compositions. To know the effect of adding cobalt stearate into HDPE has done by photodegradation  process. The polyethylene oxo-biodegradation film was given irradiation using UV light in the wavelength range 280-300 nm at room temperature for 10 days. After irradiation, in the ATR spectrum shows an absorption  peak at 1712 cm-1 wavenumber indicatied  the presence of a carbonyl group with a stronger intensity. The higher concentration of cobalt stearate added in HDPE, increases the peak intensity of carbonyl group. This is due to the increasing number of chromophores from cobalt stearate that can absorb UV light, the faster the breakdown of HDPE chains into small fragments so that HDPE is rapidly degraded in nature.

scholarly journals The High Density Polyethylene Composite with Recycled Radiation Cross-Linked Filler of rHDPEx

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1361 ◽  
Author(s):  
David Manas ◽  
Miroslav Manas ◽  
Ales Mizera ◽  
Pavel Stoklasek ◽  
Jan Navratil ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Behaviour ◽  
Composite Structure ◽  
High Density Polyethylene ◽  
Industrial Waste ◽  
Room Temperature ◽  
High Density ◽  
Polyethylene Composite ◽  
Processing Properties ◽  
Better Than

This article discusses the possibilities of using radiation cross-linked high density polyethylene (HDPEx) acting as a filler in the original high density polyethylene (HDPE) matrix. The newly created composite is one of the possible answers to questions relating to the processing of radiation cross-linked thermoplastics. Radiation cross-linked networking is—nowadays, a commonly used technology that can significantly modify the properties of many types of thermoplastics. This paper describes the influence of the concentration of filler, in the form of grit or powder obtained by the grinding/milling of products/industrial waste from radiation cross-linked high density polyethylene (rHDPEx) on the mechanical and processing properties and the composite structure. It was determined that, by varying the concentration of the filler, it is possible to influence the mechanical behaviour of the composite. The mechanical properties of the new composite—measured at room temperature, are generally comparable or better than the same properties of the original thermoplastic. This creates very good assumptions for the effective and economically acceptable, processing of high density polyethylene (rHDPEx) waste. Its processability however, is limited; it can be processed by injection moulding up to 60 wt %.

scholarly journals Carbon Nanotube Reinforced High Density Polyethylene Materials for Offshore Sheathing Applications

Molecules ◽  
2020 ◽  
Vol 25 (13) ◽  
pp. 2960 ◽  
Author(s):  
Chinyere Okolo ◽  
Rafaila Rafique ◽  
Sadia Sagar Iqbal ◽  
Mohd Shahneel Saharudin ◽  
Fawad Inam
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Carbon Nanotube ◽  
High Density Polyethylene ◽  
Uv Light ◽  
High Density ◽  
Accelerated Weathering ◽  
Multiwall Carbon Nanotube ◽  
Transmission Electron ◽  
Multiwall Carbon

Multiwall carbon nanotube (CNT)-filled high density polyethylene (HDPE) nanocomposites were prepared by extrusion and considered for their suitability in the offshore sheathing applications. Transmission electron microscopy was conducted to analyse dispersion after bulk extrusion. Monolithic and nanocomposite samples were subjected to accelerated weathering and photodegradation (carbonyl and vinyl indices) characterisations, which consisted of heat, moisture (seawater) and UV light, intended to imitate the offshore conditions. The effects of accelerated weathering on mechanical properties (tensile strength and elastic modulus) of the nanocomposites were analysed. CNT addition in HDPE produced environmentally resilient nanocomposites with improved mechanical properties. The energy utilised to extrude nanocomposites was also less than the energy used to extrude monolithic HDPE samples. The results support the mass substitution of CNT-filled HDPE nanocomposites in high-end offshore applications.

Effect of flow forming on mechanical properties of high density polyethylene pipes

2015 ◽  
Vol 19 ◽  
pp. 155-162 ◽  
Author(s):  
Amin Abedini ◽  
Payam Rahimlou ◽  
Taghi Asiabi ◽  
Samrand Rash Ahmadi ◽  
Taher Azdast
Keyword(s):  
Mechanical Properties ◽  
High Density Polyethylene ◽  
High Density ◽  
Flow Forming ◽  
Polyethylene Pipes
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