نتایج جستجو برای: polyethylene films

تعداد نتایج: 121352  

Journal: Polyolefins Journal 2019

Crystallinities of high-density polyethylene (HDPE) films containing various amounts of an oxo-biodegradable additive (HES-W) were investigated immediately after preparation and 6 weeks after ultraviolet (UV) irradiation (λ=254 nm). HDPE granules were mixed with oxo-biodegradable masterbatch in a twin-screw extruder and the extrudates were converted into films with thicknesses of 35±5 micromete...

2009
Jinguo Zhang Evangelos Manias George Polizos Jin-Young Huh Amos Ophir Ponusa Songtipya Maria del Mar Jimenez-Gasco

The heat sealing behavior of novel polyethylene-based nanocomposite films was investigated, as they relate to flexible packaging of fresh-cut vegetables, processed foods and biomedical devices. Appropriately designed sealant nanocomposites, which include dispersed montmorillonite nanofillers and ethyl vinyl acetate copolymer, produce a hermetic but peelable heat seal across a broad, 30–40◦C, ra...

Journal: :Molecules 2014
Sara Panseri Luca Maria Chiesa Alfonso Zecconi Gabriella Soncini Ivano De Noni

Nowadays food wrapping assures attractive presentation and simplifies self-service shopping. Polyvinylchloride (PVC)- and polyethylene (PE)-based cling-films are widely used worldwide for wrapping cheeses. For this purpose, films used in retail possess suitable technical properties such as clinginess and unrolling capacity, that are achieved by using specific plasticizers during their manufactu...

Journal: :Journal of Hazardous Materials 2023

Plastic is exceedingly abundant in soils, but little known about its ecological consequences for soil microbiome functioning. Here we report the impacts of polyethylene and biodegradable Ecovio BI-OPL plastic films buried alpine soils 5 months on genetic potential using shotgun metagenomics. The was more affected by than polyethylene. Fungi, ?- ?-Proteobacteria dominated films. showed signs deg...

2016
Xiangqing Jia Chuan Qin Tobias Friedberger Zhibin Guan Zheng Huang

Polyethylene (PE) is the largest-volume synthetic polymer, and its chemical inertness makes its degradation by low-energy processes a challenging problem. We report a tandem catalytic cross alkane metathesis method for highly efficient degradation of polyethylenes under mild conditions. With the use of widely available, low-value, short alkanes (for example, petroleum ethers) as cross metathesi...

Journal: :Optical Materials Express 2022

Polyethylene is a promising polymer for mid-infrared integrated optics due to its broad transparency and optimal refractive index. However, simple fabrication protocols that preserve optical characteristics are needed foster wide range of applications unlock full potential. This work presents investigations the structural properties spin-coated linear low-density polyethylene films fabricated u...

2015
Daniel Gabriel Bernat Sempere Carles Colominas

Optoelectronic properties of CVD graphene are characterized over a wide frequency range: THz, IR, visible and near-UV. We used Raman spectroscopy to characterize the synthesized graphene films. All graphene layers were deposited on various substrates, some ones transparent or flexible, such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), quartz and silicon. Transmission Ter...

2015
S. N. Kukureka

Amorphous indium–gallium–zinc-oxide (a-IGZO) thin films were deposited using RF magnetron sputtering on polyethylene naphthalate (PEN) and polyethylene terephthalate (PET) flexible substrates and their mechanical flexibility investigated using uniaxial tensile and buckling tests coupled with in situ optical microscopy. The uniaxial fragmentation test demonstrated that the crack onset strain of ...

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