Author
Tanta Setnescu
Bio: Tanta Setnescu is an academic researcher. The author has contributed to research in topics: Low-density polyethylene & Polyethylene. The author has an hindex of 14, co-authored 35 publications receiving 483 citations.
Papers
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TL;DR: In this paper, the polymer was prepared by γ-ray induced polymerization in air and pyrolysis under argon at various temperatures in the range 600-900°C.
71 citations
TL;DR: In this article, a linear dependence of the gel fraction on polypropylene (PP) concentration was found, and the optimal dose range for the efficient crosslinking of all EPDM/PP blends was 40 -180 kGy.
Abstract: Radiation crosslinking of polymer blends containing the ethylene-pro- pylene terpolymer (EPDM) and polypropylene (PP) was studied. Four binary systems with mixing ratios of 80/20, 60/40, 40/60, and 20/80 w/w and the individual components were g-processed. The development of the gel content formed in irradiated blends proved that the increase in PP concentration generated an increasing insoluble frac- tion. A linear dependence of the gel fraction on PP concentration was found. The optimal dose range for the efficient crosslinking of all EPDM/PP blends was 40 -180 kGy. The use of PP customer waste was also examined. The thermal stability of the studied mixtures was assessed in order to state the contribution of the components to the radiation compatibilization of investigated polymers. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 982-987, 2000
47 citations
TL;DR: In this article, the authors proposed a simpler method based on a single ageing test at a higher temperature and the activation energy of the oxidation reaction being determined from non-isothermal Differential Scanning Calorimetry (DSC) measurements.
39 citations
TL;DR: In this paper, the oxidation stability of low density polyethylene to UV light has been studied in the presence of various types of antioxidants (hindered phenols, HALS and synthetic N-alkylamines).
Abstract: The oxidation stability of low density polyethylene to UV light has been studied in the presence of various types of antioxidants (hindered phenols, HALS and synthetic N-alkylamines). A chemiluminescence procedure has been applied. Kinetic parameters of oxidation are obtained from isothermal measurements at 180°C. The synergistic effect of antioxidant couples is examined and a stabilisation order is determined.
34 citations
TL;DR: In this paper, the authors studied the chemical luminescence (CL) from isotactic polypropylene (i-PP) and several types of polyethylene, namely low density (LDPE), linear low density, and high density (HDPE) subjected to γ-irradiation in the presence of air, was recorded in both inert (nitrogen) and oxidative (oxygen or air) atmospheres.
33 citations
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TL;DR: In this article, the PAN fiber is first stretched and simultaneously oxidized in a temperature range of 200-300°C and then carbonized at about 1000°C in inert atmosphere which is usually nitrogen.
1,166 citations
315 citations
TL;DR: Photoluminescence spectroscopy and the photoelectrochemical measurements reveal that g-PAN nanosheets act as effective electron transfer channels to facilitate charge carrier separation in g- PAN/g-C3N4 composites.
Abstract: Novel composites consisting of graphitized polyacrylonitrile (g-PAN) nanosheets grown on layered g-C3N4 sheets were synthesized through a facile one-step thermal condensation of PAN and melamine for the first time. Photoluminescence spectroscopy and the photoelectrochemical measurements reveal that g-PAN nanosheets act as effective electron transfer channels to facilitate charge carrier separation in g-PAN/g-C3N4 composites. The g-PAN/g-C3N4 composites exhibit significantly enhanced visible-light photocatalytic performance for H2 evolution over pristine g-C3N4. The 5.0 wt % g-PAN/g-C3N4 composite has optimal H2 evolution rate of 37 μmol h–1, exceeding 3.8 times over pristine g-C3N4. We have proposed a possible mechanism for charge separation and transfer in the g-PAN/g-C3N4 composites to explain the enhanced photocatalytic performance.
243 citations
TL;DR: In this article, a novel flame retardant system of polyvinyl alcohol (PVA) is prepared via using ammonium polyphosphate (APP) and layered double hydroxide (LDH).
218 citations
TL;DR: In this article, the current status of vegetable oils use as transformer oil, including their production, processing, and characterization, is reviewed and their main advantages described in comparison with mineral oil.
Abstract: The mineral or synthetic oil is mostly being used in conjunction with paper as the dielectric medium in most of the high voltage equipment. However, impact on environment, lack of petroleum oil reserves and disposal problems with used oils, have prompted researchers to direct their focus onto biodegradable and renewable insulating materials. The new insulating liquid materials development is guided by multiple factors such as environmental requirements and other safety and economic considerations. Therefore transformers manufacturer have to face new specifications related to these new requirements. The Vegetable-oil based transformer fluids increasingly replacing mineral oil-based products in the market place. They are successful because they perform better than mineral oil products and they provide definite environmental and safety gains. This paper reviews the current status of vegetable oils use as transformer oil, including their production, processing, and characterization. The vegetable oils most used as transformer oils are presented and their main advantages described in comparison with mineral oil. The various experimental work carried out in different countries is described, giving an overview of the current research carried out on the vegetable oils. In addition scope and challenges being faced in this area of research are clearly described.
201 citations