High Density Polyethylene (HDPE) composite mixed with Azadirachta excelsa (Sentang) tree waste flour: Mechanical and physical properties

Abstract This article presents the application of plantation waste materials (leaves, branches and trunks) of Azadirachta excelsa (Sentang) tree in order to evaluate and compare their suitability as reinforcement and filler for high density polyethylene (HDPE) thermoplastics. The aim of the study was to investigate the effect of different types of Azadirachta excelsa (Sentang) trunks flour, branches flour and leaves flour fillers on the mechanical and physical properties of HDPE composite. The composite samples were produced using 25%, 35% and 45% by weight of flour filler loading and 2% coupling agent (maleic anhydride) using a twin-screw extruder, followed by injection molding process. The flexural modulus and tensile strength of the composite filled with trunk flour were not significantly different with the composite-filled branch flour. However, there is a significant difference between composite-filled leaf flour when compared to both composite-filled trunk flour and composite-filled branch flours. Overall, composite samples with trunk flour show better mechanical properties, while composite samples with lower filler loadings of 25% exhibit better dimensional stability compared to the other such as 35% and 45% filler loadings. The study also indicated that composite filled with leaf, branch and trunk flours had better mechanical strength than virgin HDPE.

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An Experimental Study on the Properties of Recycled High-Density Polyethylene

International Polymer Processing ◽

10.1515/ipp-2020-4071 ◽

2021 ◽

Vol 36 (5) ◽

pp. 557-563

Author(s):

A. G. Toroslu

Keyword(s):

Physical Properties ◽

High Density Polyethylene ◽

Iron Alloy ◽

High Density ◽

Magnetic Method ◽

Metallic Materials ◽

Metallic Material ◽

Alloy Particles ◽

Plastic Materials ◽

Mechanical And Physical Properties

Abstract Recycling of plastic materials has become more environmentally important than recycling of other materials. The most important problem during recycling is the presence of oil, dirt, dust and metal particles that are mixed with plastic materials. These mixtures can change their its mechanical and physical properties and it is quite costly to remove them completely. Removing iron alloy particles from plastic is possible by using the magnetic method. However, removing non-metallic materials requires extra processing. In this study, the use of recycled High-Density Polyethylene (rHDPE) without an expensive cleaning processes has been investigated. Different amounts of aluminium oxide (Al2O3) were added to High Density Polyethylene (HDPE) to simulate the effect of non-metallic material involved. The effect of these contamination rates on the mechanical and physical properties of HDPE was examined in detail. For this purpose, recyclable materials were produced by mixing rHDPE with 1%, to 7% Al2O3 . The results show that up to 7% of the mixture has acceptable effects on the properties of HDPE. When the results of the experiments are examined, it is observed that there is a 3.74% change in the elastic modulus of the material. This means, that up to 7% non-metal contaminated rHDPE material can be used without any costly recycling process.

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Effects of conductive graphite filler loading on physical properties of high-density polyethylene composite

Polymer Composites ◽

10.1002/pc.22230 ◽

2012 ◽

Vol 33 (7) ◽

pp. 1071-1076 ◽

Cited By ~ 19

Author(s):

I. Tavman ◽

I. Krupa ◽

M. Omastova ◽

M. Sarikanat ◽

I. Novak ◽

...

Keyword(s):

Physical Properties ◽

High Density Polyethylene ◽

Filler Loading ◽

High Density ◽

Polyethylene Composite

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Environmental impact analysis of the injection molding process: analysis of the processing of high-density polyethylene parts

Journal of Cleaner Production ◽

10.1016/j.jclepro.2015.07.119 ◽

2015 ◽

Vol 108 ◽

pp. 80-89 ◽

Cited By ~ 19

Author(s):

Ana Elduque ◽

Daniel Elduque ◽

Carlos Javierre ◽

Ángel Fernández ◽

Jorge Santolaria

Keyword(s):

Environmental Impact ◽

Injection Molding ◽

High Density Polyethylene ◽

Impact Analysis ◽

Process Analysis ◽

High Density ◽

Injection Molding Process ◽

Molding Process ◽

Environmental Impact Analysis

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Study on the solidification kinetics of high-density polyethylene during thin-walled injection molding process

Journal of Polymer Engineering ◽

10.1515/polyeng-2012-0045 ◽

2012 ◽

Vol 32 (6-7) ◽

pp. 355-363 ◽

Cited By ~ 8

Author(s):

Shuang-quan Deng ◽

Bin Yang ◽

Ji-bin Miao ◽

Ru Xia ◽

Jia-sheng Qian ◽

...

Keyword(s):

Injection Molding ◽

High Density Polyethylene ◽

Polymeric Materials ◽

High Density ◽

Injection Molding Process ◽

Structure Property ◽

X Ray Diffraction ◽

Molding Process ◽

Solidification Kinetics ◽

Thin Walled

Abstract In this work, the effect of the initial and secondary temperature differences on the solidification behaviors of high-density polyethylene (HDPE) during the thin-walled injection molding (TWIM) was intensively investigated. Simulated temperature profiles using the enthalpy transformation methodology were compared with an in situ temperature measurement, and reasonable agreement was achieved between calculations and measurements. Two-dimensional wide-angle X-ray diffraction characterization shows that the formation of oriented crystal structures was considerably affected by the thermal gradient within the injection-molded article. The present study can be practically significant to the optimization of the cooling parameters during the TWIM of crystalline polymers as well as to the further study on the relationship among “processing-structure-property” of polymeric materials.

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Natural Weathering Effect on Mechanical and Physical Properties of Recycled High-Density Polyethylene Composite with Bamboo Reinforcement

Proceedings of the 6th International Conference and Exhibition on Sustainable Energy and Advanced Materials - Lecture Notes in Mechanical Engineering ◽

10.1007/978-981-15-4481-1_62 ◽

2020 ◽

pp. 659-666 ◽

Cited By ~ 1

Author(s):

N. A. Astadini ◽

I. Widiastuti ◽

B. Harjanto ◽

R. C. Adiputra ◽

A. Prasetio

Keyword(s):

Physical Properties ◽

High Density Polyethylene ◽

High Density ◽

Natural Weathering ◽

Polyethylene Composite ◽

Mechanical And Physical Properties ◽

Bamboo Reinforcement

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Physical and Mechanical Properties of Tilapia Scale Hydroxyapatite-Filled High-Density Polyethylene Composites

Polymers ◽

10.3390/polym14020251 ◽

2022 ◽

Vol 14 (2) ◽

pp. 251

Author(s):

C. N. Aiza Jaafar ◽

I. Zainol ◽

M. I. Izyan Khairani ◽

T. T. Dele-Afolabi

Keyword(s):

High Density Polyethylene ◽

Mechanical Performance ◽

Chemical Interaction ◽

Biomedical Application ◽

Flexural Modulus ◽

Physical And Mechanical Properties ◽

Filler Loading ◽

In Vitro Cytotoxicity ◽

High Density

The effects of filler loading and silane coupling agent on the properties of hydroxyapatite (HAp)-filled high density polyethylene (HDPE) composites have been studied. The (HAp) powder was successfully produced from tilapia scales using the spray drying process utilized to prepare the HDPE/HAp composites. The FTIR peaks for the untreated HDPE/30HAp composite corresponded to the functional groups of HDPE (C-CH3) and –CH2 and HAp (PO4−3 and O-H). The FTIR spectrum for the silane-treated composite showed that the C=O and silanol groups were eliminated, which strongly confirms the chemical interaction between the HAp fillers and the HDPE matrix. The developed composites demonstrated enhanced mechanical performance, and in particular the treated HDPE/30HAp-S composite exhibited superior tensile strength, Young’s modulus and flexural modulus of 28.26 MPa, 1272 MPa and 796 MPa, respectively. In vitro cytotoxicity analysis showed that the developed composites were non-toxic and have great potential to be used for biomedical application.

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