scholarly journals Production of PBT(polybutylene terephthalate) Oligomer from Recycled PET(polyethylene terephthalate)

2016 ◽  
Vol 54 (4) ◽  
pp. 437-442
Author(s):  
Minjeong Cho ◽  
Jeongin Yang ◽  
Seunghyun Noh ◽  
Hongjae Joe ◽  
Myungwan Han
Keyword(s):  
Polyethylene Terephthalate ◽  
Polybutylene Terephthalate ◽  
Recycled Pet

scholarly journals Mechanical and structural properties of composites made from recycled and virgin polyethylene terephthalate (PET) and metal chip or mesh wire

2019 ◽  
Vol 299 ◽  
pp. 06007
Author(s):  
Mircea Aurelian Antoniu Rusu ◽  
Sever-Adrian Radu ◽  
Catalin Moldovan ◽  
Codruta Sarosi ◽  
Ionela Amalia Mazilu (Moldovan) ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyethylene Terephthalate ◽  
Processing Parameters ◽  
Sem Images ◽  
Major Drawback ◽  
Recycled Pet ◽  
Plastic Processing ◽  
Metal Chip ◽  
Intense Research ◽  
Properties Of Composites

Although polyethylene terephthalate (PET) is a champion of recycling, intense research is being done to find new solutions for using recycled plastic. This study aims to characterize the mechanical andstructural properties (SEM- scanning electron microscopy) of products made from recycled metal swarf or mesh wire with recycled plastic (PET) in comparison with virgin plastic. Samples manufactured from virgin and recycled PET are made by pressing and high temperature. The loss of mechanical properties ofproducts made from recycled plastic is a major drawback that influences their use. SEM images confirm that the dispersion and distribution of the PET phase is not very uniform. By addition of virgin plastic in various compositions with recycled plastic, processing parameters and mechanical properties can be optimized.

An Investigation of the Barrier Properties and of the Residual Acetaldehyde in Polyethylene Terephthalate Composites

2017 ◽  
Vol 44 (12) ◽  
pp. 19-22
Author(s):  
A.S. Shabaev ◽  
S.Yu. Khashirova ◽  
A.K. Mikitaev ◽  
I.V. Musov ◽  
A.L. Slonov
Keyword(s):  
Carbon Dioxide ◽  
Polymer Composites ◽  
Polyethylene Terephthalate ◽  
Oxygen Permeability ◽  
Gas Permeability ◽  
Polymeric Materials ◽  
Barrier Properties ◽  
Diffusion Cell ◽  
Polybutylene Terephthalate

The diffusion cell to a Tsvet-800 chromatograph for determining the gas permeability of polymeric materials has been optimised. The oxygen permeability and the carbon dioxide permeability of polymer composites based on polyethylene terephthalate and polybutylene terephthalate have been studied. The optimum compositions, combining high barrier properties and a low acetaldehyde content, have been found.

scholarly journals Polyethylene Terephthalate (PET) Bottles Waste as Fine Aggregate in Concrete

2019 ◽  
Vol 8 (6S4) ◽  
Keyword(s):  
Natural Resources ◽  
Polyethylene Terephthalate ◽  
Construction Material ◽  
Fine Aggregate ◽  
River Sand ◽  
Recycled Pet ◽  
Pet Bottles ◽  
Fine Aggregates ◽  
New Construction ◽  
Natural Aggregates

Concrete construction industry is one of the major sector utilizing natural resources to produce concrete for building constructions. The rapid increase in building constructions and the demand for natural aggregates has resulted in depletion natural resources at an alarming rate. Uncontrolled mining activity worsens the situation. Thus serious awareness has been taken into consideration, has to be identified as a potential river sand substitution for fine aggregates replacement in concrete. For this review, utilizing recycled material are described as a fine aggregate replacement to river sand, particularly recycled Polyethylene Terephthalate (PET) bottles. Recycled PET Bottles are categorized as nonbiodegradable waste materials which are injurious to health. Recycled PET bottles in concrete are economical and help in reducing disposal problems. Recycled PET bottles are pondered as the best eco-friendly alternative not only for resolving the problem of disposal but as a new construction material for concrete

scholarly journals Identification of Potential Migrants in Polyethylene Terephthalate Samples of Ecuadorian Market

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3769
Author(s):  
Karina Marín-Morocho ◽  
Sandra Domenek ◽  
Rómulo Salazar
Keyword(s):  
Polyethylene Terephthalate ◽  
Degradation Products ◽  
Safety Evaluation ◽  
Chemical Compounds ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Recycled Pet ◽  
Spectrometry Analysis ◽  
Safety Issues ◽  
Pet Bottles

Polyethylene terephthalate (PET) is the plastic packaging material most widely used to produce bottles intended for contact with food and beverages. However, PET is not inert, and therefore, some chemical compounds present in PET could migrate to food or beverages in contact, leading to safety issues. To evaluate the safety of PET samples, the identification of potential migrants is required. In this work, eight PET samples obtained from the Ecuadorian market at different phases of processing were studied using a well-known methodology based on a solvent extraction followed by gas chromatography–mass spectrometry analysis and overall migration test. Several chemical compounds were identified and categorized as lubricants (carboxylic acids with chain length of C12 to C18), plasticizers (triethyl phosphate, diethyl phthalate), thermal degradation products (p-xylene, benzaldehyde, benzoic acid), antioxidant degradation products (from Irgafos 168 and Irganox), and recycling indicator compounds (limonene, benzophenone, alkanes, and aldehydes). Additionally, overall migration experiments were performed in PET bottles, resulting in values lower than the overall migration limit (10 mg/dm2); however, the presence of some compounds identified in the samples could be related to contamination during manufacturing or to the use of recycled PET-contaminated flakes. In this context, the results obtained in this study could be of great significance to the safety evaluation of PET samples in Ecuador and would allow analyzing the PET recycling processes and avoiding contamination by PET flakes from nonfood containers.

scholarly journals Durability properties of concrete made with polyethylene terepthalate and polypropylene as replacement of fine aggregate

2021 ◽  
Vol 309 ◽  
pp. 01131
Author(s):  
Suram Raju ◽  
Vegiraju Naresh Kumar Varma ◽  
T. Srinivas
Keyword(s):  
Compressive Strength ◽  
Polyethylene Terephthalate ◽  
Point Of View ◽  
Fine Aggregate ◽  
Acid Attack ◽  
Conventional Concrete ◽  
Recycled Pet ◽  
Alternative Material ◽  
Natural Aggregates ◽  
Good Workability

Polyethylene Terephthalate (PET) and Polypropylene (PP) is mostly used materials for making items like water bottles, food containers and many other plastic products in all fields of life. Due to the scarcity of natural aggregates for making concrete, it is required to go for alternative material, this type of plastic is one of the materials for replacement of fine aggregate in concrete. An objective of this paper is to study the feasibility of this recycled PET and PP plastic waste to be used as a building material in manufacturing of concrete which is replaced in fine aggregate. Polyethylene Terephthalate and Polypropylene is used in various percentages like 5%, 10%, 15% and also various tests like workability and compressive strength, Sorptivity, water absorption, acid attack and sulphate attack tests are conducted. From the results the PP shows good workability but low compressive strength than PET. From the durability point of view, the concrete made with PET and PP have given better results compared to conventional concrete of M30 grade. In PET and PP concrete, PET resists the acid, sulphate and water over the long period much better than the PP. So, PET can be replaced up to 10% in fine aggregate, whereas PP is allowed up to 5% replacement of fine aggregate.

Composites Manufactured with Recycled Pet and Reinforced with Zinc Particles

2014 ◽  
Vol 976 ◽  
pp. 240-245
Author(s):  
Jessica Osorio-Ramos ◽  
Mario Romero-Romo ◽  
Elizabeth Refugio-García ◽  
Eduardo Terres-Rojo ◽  
Enrique Rocha-Rangel
Keyword(s):  
Particle Size ◽  
Water Absorption ◽  
Polyethylene Terephthalate ◽  
Polymer Matrix ◽  
Zinc Concentration ◽  
Recycled Pet ◽  
Zinc Concentrations ◽  
Grinding Time

Thepresent research analyzes the effect induced through addition of two zinc concentrations to composites based on recycled PET (polyethylene terephthalate), as a polymer matrix. Prior to mechanical assessment, the optimum grinding time was determined, namely, where the smaller particle size was generated (PET–420mm and Zn-5mm), that was 3 h. Subsequently, a comparison was done between two different blends, changing the zinc concentration 10 or 30 wt. %, from which the necessary test specimens for isothermal sintering were prepared and exposed at 256°C for 10, 15 and 20 minutes periods. These preliminary specimens permitted to value, for each zinc concentration, theirdensity, hardness (shore D) and water absorption. The best results were obtained with the samples sintered for the intermediate periods. The flexion and compression toughness were evaluated, where the blend with the higher toughness contained 30 wt. % Zn.

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