Use of Polysiloxane Gel as Laminate for Solar PVT Collectors

2015 ◽  
Author(s):  
Tomas Matuska ◽  
Vladimir Jirka ◽  
Vladislav Poulek
Keyword(s):  
Polysiloxane Gel

Synthesis and Properties of Regioregular Polythiophene Bearing Cyclic Siloxane Moiety at the Side Chain and the Formation of Polysiloxane Gel by Acid Treatment of the Thin Film

2019 ◽  
Vol 48 (6) ◽  
pp. 611-614 ◽  
Author(s):  
Tadayuki Ogura ◽  
Chihiro Kubota ◽  
Toyoko Suzuki ◽  
Kentaro Okano ◽  
Norikazu Tanaka ◽  
...  
Keyword(s):  
Thin Film ◽  
Acid Treatment ◽  
Side Chain ◽  
Cyclic Siloxane ◽  
Polysiloxane Gel

scholarly journals Multi-Responsive Polysiloxane/Poly(N-isopropylacrylamide) Interpenetrating Networks Containing Urea and Thiourea Groups

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1175 ◽  
Author(s):  
Junta Sano ◽  
Shigeki Habaue
Keyword(s):  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Interpenetrating Networks ◽  
Volume Changes ◽  
Fluoride Ions ◽  
Temperature Responsive ◽  
Chemical Stimuli ◽  
Nipam Gel ◽  
Typical Temperature ◽  
Polysiloxane Gel

Novel interpenetrating polymer networks (IPNs) were synthesized from N-isopropylacrylamide (NIPAM) and polysiloxanes containing a urea or thiourea side group, in addition to the silanol residue, through two reactions, such as the radical gelation of NIPAM and the condensation of silanols to form a siloxane linkage. The obtained IPNs showed a typical temperature-responsive volume change in water based on the constructed poly-NIPAM gel component. In addition, the characteristic color and volume changes responding to chemical stimuli, such as acetate and/or fluoride ions, based on the introduced urea and thiourea groups onto the polysiloxane gel were observed in N,N-dimethylformamide.

Catalytic atom-transfer radical cyclization by copper/bipyridine species encapsulated in polysiloxane gel

2010 ◽  
Vol 46 (13) ◽  
pp. 2256 ◽  
Author(s):  
Yukihiro Motoyama ◽  
Kazuyuki Kamo ◽  
Akihiro Yuasa ◽  
Hideo Nagashima
Keyword(s):  
Radical Cyclization ◽  
Atom Transfer ◽  
Atom Transfer Radical Cyclization ◽  
Polysiloxane Gel

scholarly journals Iodopropyl-branched polysiloxane gel electrolytes with improved ionic conductivity upon cross-linking

2014 ◽  
Vol 50 (90) ◽  
pp. 13904-13906 ◽  
Author(s):  
G. L. De Gregorio ◽  
R. Giannuzzi ◽  
M. P. Cipolla ◽  
R. Agosta ◽  
R. Grisorio ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Cross Linking ◽  
Gel Electrolytes ◽  
Polysiloxane Gel

A Simplified Nonsurgical Method for the Correction of Neonatal Deformational Auricular Anomalies

2016 ◽  
Vol 56 (2) ◽  
pp. 132-139 ◽  
Author(s):  
Catherine S. Chang ◽  
Scott P. Bartlett
Keyword(s):  
Plastic Surgeon ◽  
Improved Outcomes ◽  
Before And After ◽  
Polysiloxane Gel ◽  
Delay In Treatment

Despite reported success of early nonsurgical splinting of congenital ear deformities, the technique has not been widely utilized due to difficulty with application and positional maintenance of these devices. Delay in treatment can result in unnecessary surgery for the child later in life. In response to this need, we developed a simplified system consisting of Velcro, conformers, and polysiloxane gel that can be applied in 3 steps. Before and after photos after application of the device were graded by a plastic surgeon independent of the study. A total of 33 ear deformities were treated. In all, 92.3% of ears achieved significant improvement and normalization of their ears after therapy. This device allows for a more straightforward and individualized application than current products available. Our hope is that practitioners involved early in the infant’s care will utilize this technology resulting in improved outcomes and avoiding unnecessary surgery.

NMR of Tissues Exposed to Polysiloxane Gels

1998 ◽  
Vol 71 (1) ◽  
pp. 95-104 ◽  
Author(s):  
Leoncio Garrido
Keyword(s):  
Biomedical Applications ◽  
Breast Implants ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
29Si Nmr ◽  
29Si Nmr Spectra ◽  
Angle Spinning ◽  
Polysiloxane Gel

Abstract Silicone (polysiloxanes) gel-filled implants have been widely used for biomedical applications, mainly because they were considered to be nonbiodegradable. However, increasing concern about the health implications of polysiloxane exposure for women with silicone gel-filled breast implants has prompted interest to study the biochemistry of implanted polysiloxanes. The purpose of this work is to investigate the migration of polysiloxanes from the implant to local and distant sites and their chemical modification in living systems. Tissues from animals and humans exposed to polysiloxane gel implants are studied in vivo using proton NMR localized spectroscopy, and in vitro with proton and 29Si magic angle spinning (MAS) NMR spectroscopy. This work demonstrates that free polysiloxanes present in the gel-filled implants migrate to surrounding tissues and distant organs, such as the liver. In addition, 29Si NMR spectra of metabolically active tissues (liver) show the presence of chemically unchanged polysiloxanes and other silicon-containing compounds (silica) which suggest that these polymers are biodegradable.

Sensitive cyclodextrin–polysiloxane gel membrane on EIS structure and ISFET for heavy metal ion detection

2000 ◽  
Vol 62 (3) ◽  
pp. 233-237 ◽  
Author(s):  
M.Ben Ali ◽  
R Kalfat ◽  
H Sfihi ◽  
J.M Chovelon ◽  
H.Ben Ouada ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Heavy Metal Ion ◽  
Ion Detection ◽  
Metal Ion Detection ◽  
Polysiloxane Gel

Polysiloxane–gel matrices for ion sensitive membrane

2000 ◽  
Vol 2 (2-3) ◽  
pp. 225-231 ◽  
Author(s):  
R Kalfat ◽  
M.Ben Ali ◽  
R Mlika ◽  
F Fekih-Romdhane ◽  
N Jaffrezic-Renault
Keyword(s):  
Polysiloxane Gel ◽  
Sensitive Membrane

Development of Modules With Different Types of Concentrators and Receivers of Solar Radiation

2021 ◽  
pp. 74-103
Keyword(s):  
Solar Radiation ◽  
Service Life ◽  
Thermal Efficiency ◽  
Radiation Detector ◽  
Solar Concentrator ◽  
Two Component ◽  
Different Types ◽  
Polysiloxane Gel

Optical schemes and designs of four types of solar modules with louvered heliostats and concentrators with zero shading losses and blocking of solar radiation have been developed. The design of a compact thermal photovoltaic solar radiation detector for a non-tracking parabolic-cylindrical solar concentrator provides the thermal efficiency of the module in the range of 0,6–0,7, the service life of at least 25 years due to the sealing of the photoelectric elements using a two-component polysiloxane gel.

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