Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Chandana Mandal"'
Autor:
Chariklia Sotiriou-Leventis, Suraj Donthula, Nicholas Leventis, Chandana Mandal, Parwani M. Rewatkar
Publikováno v:
Journal of Sol-Gel Science and Technology. 92:662-680
Silica aerogels are prepared by drying wet-gels under conditions that eliminate surface tension forces, typically by exchanging the pore-filling solvent with liquid or supercritical fluid (SCF) CO2 that is vented off like a gas. Thereby, silica wet-g
Autor:
Nicholas Leventis, Suraj Donthula, Chariklia Sotiriou-Leventis, Hojat Majedi Far, Adnan Malik Saeed, Chandana Mandal
Publikováno v:
Journal of Sol-Gel Science and Technology. 92:84-100
Silica aerogels are transparent and excellent thermal insulators; however, application in energy-efficient windows has been elusive. The main reason is fragility that renders handling and processing extremely difficult. One way to overcome the fragil
Autor:
Sadeq Malakooti, Huiluo Chen, Hongbing Lu, Nicholas Tsao, Chandana Mandal, Yao Ren, Rushi U. Soni, Guoqiang Qin, Shameek Sushil Kulkarni, Chariklia Sotiriou-Leventis, Nicholas Leventis, James Shiao, Tahereh Taghvaee
Publikováno v:
ACS Applied Polymer Materials. 1:2322-2333
A family of ambient-dried polybenzoxazine aerogels is prepared with a facile and scalable process as a high-performance polymeric aerogel with strong and robust thermomechanical properties at eleva...
Autor:
Rushi U. Soni, Chandana Mandal, Chariklia Sotiriou-Leventis, Nicholas Leventis, Massimo F. Bertino, Suraj Donthula
Publikováno v:
Journal of Sol-Gel Science and Technology. 90:127-139
TMOS-co-APTES wet-gels have been used as templates for polymer crosslinked aerogels, which in turn have been used as strong materials and as starting materials for ceramic aerogels. Such wet-gels are prepared in acetonitrile (CH3CN) via co-gelation o
Autor:
Nicholas Leventis, Guoqiang Qin, Sadeq Malakooti, Chariklia Sotiriou-Leventis, Hongbing Lu, Chandana Mandal
Publikováno v:
Volume 12: Advanced Materials: Design, Processing, Characterization, and Applications.
Aerogels are three-dimensional networks of nanoparticles with high specific surface area and high porosity. Following the significant improvement on the mechanical strengths and ductility of traditional aerogels with polymer cross-linking (i.e., X-ae
Autor:
Tahereh Taghvaee, Naveen Chandrasekaran, Nicholas Leventis, Parwani M. Rewatkar, Adnan Malik Saeed, Theodora Leventis, Suraj Donthula, Chariklia Sotiriou-Leventis, Chandana Mandal, T. K. Shruthi
Publikováno v:
Chemistry of Materials. 30:1635-1647
We report the carbothermal synthesis of sturdy, highly porous (>85%) SiC and Si3N4 monolithic aerogels from compressed polyurea-cross-linked silica xerogel powders. The high porosity in those articles was created via reaction of core silica nanoparti
Autor:
Nicholas Leventis, Chandana Mandal, Chariklia Sotiriou-Leventis, Theodora Leventis, Adnan Malik Saeed, Suraj Donthula, James Schisler
Publikováno v:
Chemistry of Materials. 29:4461-4477
Shape memory polymers (SMPs) remember and return to an original shape when triggered by a suitable stimulus, typically a change in temperature. They are pursued as cost-effective, low-density, higher-strain-tolerant alternatives to shape memory alloy
Autor:
Chandana Mandal, Adnan Malik Saeed, Hojat Majedi Far, Suraj Donthula, Chariklia Sotiriou-Leventis, Parwani M. Rewatkar, Tahereh Taghvaee, Nicholas Leventis
Publikováno v:
ACS Applied Materials & Interfaces. 9:13520-13536
Polymeric aerogels (PA-xx) were synthesized via room-temperature reaction of an aromatic triisocyanate (tris(4-isocyanatophenyl) methane) with pyromellitic acid. Using solid-state CPMAS 13C and 15N NMR, it was found that the skeletal framework of PA-
Autor:
Suraj Donthula, Nicholas Leventis, Chariklia Sotiriou-Leventis, Michael S. Ding, Chandana Mandal
Publikováno v:
Chemistry of Materials. 27:8126-8137
Monolithic nanoporous iron was prepared via carbothermal reduction of interpenetrating networks of polybenzoxazine and iron oxide nanoparticles. Excess carbon was burned off at 600 °C in air, and oxides produced from partial oxidation of the Fe(0) n
Autor:
Mary Ann B. Meador, Nicholas Leventis, Chandana Mandal, Theodora Leventis, Chariklia Sotiriou-Leventis, Suraj Donthula, James Schisler
Publikováno v:
ACS applied materialsinterfaces. 10(27)
Thermodynamic-kinetic relationships are not uncommon, but rigorous correlations are rare. On the basis of the parabolic free-energy profiles of elastic deformation, a generalized Marcus-type thermodynamic-kinetic relationship was identified between t