Polyethylene terephthalate (PET) is widely used in packaging and fiber industries. However, despite of its strain-induced crystallization (SIC) behavior, stretching procedures sometimes lead to dimensional instabilities upon time or at intermediate temperatures (hot filling for example). One the solutions involves heating sample during a specific given temperature, generally after stretching, p...

Nuclear medical imaging is a well established method for obtaining information on the status of certain organs within the human body or in animals. This paper presents an overview of two commonly used methods, namely SPECT (single photon emission computed tomography) and PET (positron emission tomography), as well as the emerging method of intraoperative probes with imaging capability. The disc...

In this study, dyeing of two regenerated polyester fibers, poly-trimethylene terephthalate (PTT) and poly-lactic acid (PLA), with natural dyes were compared with that of poly-ethylene terephthalate (PET) fiber. Lac was used as the primary natural colorant while Catechu was chosen as a natural color that can also act as a biomordant. The effects of temperature, initial pH of dye bath and dyeing ...

Durable delustered PET (PET-TiO2) fabric super hydrophilic surface has been obtained by plasma selecting etching. The aging effect of their hydrophilicity after treatment investigated with storage time. After Ar/O2 radio frequency (RF) for only 1 min, PET-TiO2 showed water contact angle 0o. 10 month time, it keeps its below 75.7o. Further more, Xenon light irradiation is firstly found that well...

Abstract Magnetic Mg-Al-O@Fe3O4 micro particles were synthesized by coating nanosized Mg-Al double oxides onto Fe3O4 particles. The formed hierarchical structure gave a high active surface area, which enabled these to work efficiently as catalyst in the glycolysis of poly(ethylene terephthalate) (PET). bis(hydroxyethyl) terephthalate (BHET) yield reached above 80 mol% presence 0.5 wt% reaction ...

Thermobonding is widely used in producing of nonwovens. In this study various layers of thermobonded nonwovens were produced by altering the pressure, binder fibres and quality of blending. Mechanical properties of the so-called layers such as breaking strength and breaking elongation, bending rigidity and air permeability were assessed consequently. The structure of the layers was then studied...

The United States generates the most plastic waste of any country and is a top contributor to global pollution. Multiple end-of-life strategies must be implemented minimize environmental impacts retain valuable material, but it challenging compare options that generate products with different lifetimes utilities. Herein, they present material flow model equipped consequential life cycle assessm...

malocclusion and overgrowth of continuously growing teeth is a frequently seen problem in pet rabbits. in the present study, the studied rabbits were divided based on age into two groups (less than 3 years and above 3 years). they were 1–5 years old and had mean body weight of 2250 gr. it was diagnosed 5 cases of malocclusion and root elongation of grade 2 and 2 cases of grade 4. affected rabbi...

Subgrade soil stabilization is one of the primary and major processes in the construction of any highway; also environmental authorities are concerned about the growing amount of polyethylene (PET) bottles produced by household sectors. This research in order to study effect of adding recycled polyester fiber on soil engineering properties, especially shear strength and California Bearing Ratio...

Different fiber blends, knit patterns, and treatments may be applied to increase the functionality comfort of knitted fabrics. In this research, physical properties bending stiffness 1 × rib half-milano fabrics with four blends (90% cotton/10% antistatic PET, 80% cotton/20% 70% cotton/30% 65% cotton/35% PET) each pattern were studied. The effect fabric direction (course wale), technical side (f...