Results 31 to 40 of about 24,799 (300)

Effect of organosilicon adsorbent on the content of mobile forms of heavy metals and growth of test-crop under conditions of soil contamination with lead and copper

open access: yesБюллетень Почвенного института им. В.В. Докучаева, 2023
The pollution of soil by heavy metals becomes a prime ecological problem. Recultivation of polluted soil objects is usually made by means of different types of sorbents. So, in this connection the search for the most effective and multifunctional sorbing
P. D. Skurikhina
doaj   +1 more source

Bioaccumulation of Linear Siloxanes in Fish

open access: yesEnvironmental Toxicology and Chemistry, 2023
Abstract The bioaccumulation behavior, including the uptake, internal distribution, depuration, and biotransformation rates, of three widely used linear methyl-siloxanes was investigated in rainbow trout. Dietary uptake efficiencies of octamethyltrisiloxane (L3), decamethyltetrasiloxane (L4), and dodecamethylpentasiloxane (L5) were 15 ...
Mark A. Cantu, Frank A. P. C. Gobas
openaire   +2 more sources

Siloxane-Encapsulated Upconversion Nanoparticle Hybrid Composite with Highly Stable Photoluminescence against Heat and Moisture

open access: yes, 2019
Herein, we report a siloxane-encapsulated upconversion nanoparticle hybrid composite (SE-UCNP), which exhibits excellent photoluminescence (PL) stability for over 40 days even at an elevated temperature, in high humidity, and in harsh chemicals.
Byeong-Soo Bae (1685257)   +23 more
core   +1 more source

Thermal Stability of Hexamethyldisiloxane (MM) for High-Temperature Organic Rankine Cycle (ORC)

open access: yesEnergies, 2016
The design of efficient Organic Rankine Cycle (ORC) units for the usage of industrial waste heat at high temperatures requires direct contact evaporators without intermediate thermal oil circuits.
Markus Preißinger, Dieter Brüggemann
doaj   +1 more source

Catalytic Synthesis of Oligosiloxanes Mediated by an Air Stable Catalyst, (C6F5)3B(OH2)

open access: yesFrontiers in Chemistry, 2020
The utility of (C6F5)3B(OH2) as catalyst for the simple and environmentally benign synthesis of oligosiloxanes directly from hydrosilanes, is reported. This protocol offers several advantages compared to other methods of synthesizing siloxanes, such as ...
Kristel M. Rabanzo-Castillo   +7 more
doaj   +1 more source

Siloxane Modification of Bismaleimide Resins [PDF]

open access: yesPolymer Journal, 1987
Polybismaleimides have high thermostability, but they are very brittle materials. Introduction of spacers such as aromatic diamines by addition onto the maleimide double bonds gives after crosslinking of the remaining double bonds, a polyaminobismaleimide network with greatly reduced brittleness.
Rakoutz, M., Balme, M.
openaire   +1 more source

Valorization of Residual Silica from the Aqueous-Phase Silicate Conversion of Microsilica as Sustainable Reinforcing Fillers in Rubber Composites

open access: yesMaterials Research Express
This study pioneers a sustainable strategy to valorize alkali mud—a silica-rich byproduct (77.88% SiO _2 via XRF/XPS) of water glass production—into high-performance rubber additives, addressing both industrial waste management and circular economy ...
Hai Wang   +8 more
doaj   +1 more source

Surprising Water Slipping Performance on Highly Hydrophilic PEG‐Derived Monolayer‐Covered Surfaces: Preparation, Mechanism, and Application

open access: yesAdvanced Functional Materials, EarlyView.
Highly hydrophilic surfaces (water contact angle, ≈17.7°) exhibiting surprising water slipping performance (sliding angle, ≈7.3°) are successfully prepared via simple chemisorption of polyethylene glycol (PEG) organosilane and subsequent alkali‐treatment.
Hyeonjin Kim   +5 more
wiley   +1 more source

The Nature of Hydrogen Bonding Involving the Siloxane Group

open access: yes, 2012
Variation of the Si-O-Si angle in siloxane compounds is a way to tune their basicity from highly hydrophobic systems at linear geometry to hydrophilic systems at small angles.
Luger, Peter   +2 more
core   +1 more source

Low-Temperature Mineralisation of Titania-Siloxane Composite Layers

open access: yes, 2021
This paper deals with low-temperature mineralisation of coatings made with titania-siloxane compositions (TSC). Methyltriethoxysilane has been adopted as the precursor for the siloxane, and during its synthesis, an oligomeric siloxane condensate with ...
Michal Veselý   +9 more
core   +1 more source

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