In this research, the presence of microplastics was detected through a differential scanning calorimetry (DSC) analysis three wastewater treatment plants. One these plants applied only preliminary stage while others up to secondary evaluate their effectiveness. The results showed polyethylene (PE), polystyrene (PS), polypropylene (PP) and terephthalate (PET), which were classified as fragments,...

in iran, the majority of vegetable oil producers , use pet for packaging their products . due to high solubility of pet oligomers in the oils , and shelf life of liquid oils , it is expected that some compounds migrate into the oil . this study was carried out to determine the amount of migration of terephtalates from pet bottles into sunflower oil and the effect of temperature and storage time...

The study proposes the evaluation of residence-time distribution (RTD) in situ an industrial dryer for production recycled polyester fibers (PES) from colorless polyethylene terephthalate (PET) flakes without interruption production. A disturbance pulse type was employed, which tracer (blue PET flakes) had previously been crystalized and its concentration obtained according to time at outlet. A...

The objective of the study is to investigate influence Polyethylene Terephthalate (PET) recycled plastic bottle fibers on compressive strength and cracking concrete. In this study, two types fiber are used: straight zigzag whose length aspect ratio 40 mm respectively. 0, 0.75, 1.25% volume fractions replacing coarse aggregates used in investigation. According ACI 211.1-91, design mixing 1:2:3 f...

The Achilles tendon is the most common ruptured tendon of human body. Reconstruction with polyethylene terephthalate (PET) artificial ligament is recommended in some serious cases. Sodium hyaluronate (HA) is beneficial for the healing of tendon injuries. We aimed to determine the effect of sodium hyaluronate in repair of Achilles tendon defect with PET artificial ligament in an animal tendon re...

volatile compounds generated from two types of polymeric laminated films, irradiated by gamma radiation at 8, 10 and 15 kgy, were investigated. activated carbon was used as a dry food simulant to trace the migrating compounds by gas chromatography/mass spectroscopy (gc/ms). the resulting data showed that the polyethylene terephthalate (pet)/polyethylene terephthalate (pet)/linear low density po...

The objective of this study was to compare the flexural strength and elasticity modulus of two types of staple reinforcement fibers, Interlig - Angelus/glass (Londrina, PR, Brazil) and Connect - KerrLab(R)/polyethylene (MFG Co., West Collins Orange, CA, USA), which are widely used in Dentistry for chairside use, after varying the number of layers employed and submitting or not to thermocycling....

The analysis of the situation with processing plastic waste in Krasnoyarsk Territory, carried out article, showed its low efficiency. Most waste, which 20 % is polyethylene terephthalate (PET), not recycled and ends up landfills. main reason lack enterprises engaged full-fledged recycling. This exacerbates difficult environmental region. authors have developed presented a recycling project base...

Olefin fibers, also called polyolefin fibers, are defined as manufactured fibers in which the fiber-forming substance is a synthetic polymer of at least 85 wt% ethylene, propylene, or other olefin units (1). Several olefin polymers are capable of forming fibers, but only polypropylene [9003-07-0] (PP) and, to a much lesser extent, polyethylene [9002-88-4] (PE) are of practical importance. Olefi...