Quantitative DTA of epoxy adhesives of technological interest

1981 ◽  
Vol 21 (2) ◽  
pp. 299-307 ◽  
Author(s):  
A. Schiraldi ◽  
V. Wagner ◽  
G. Samanni ◽  
P. Rossi
Author(s):  
M. T. Tinker ◽  
L. W. Hobbs

There is considerable technological interest in oxidation of nickel because of the importance of nickel-base superalloys in high-temperature oxidizing environments. NiO scales on nickel grow classically, by outward diffusion of nickel through the scale, and are among the most studied of oxidation systems. We report here the first extensive characterization by transmission electron microscopy of nickel oxide scales formed on bulk nickel substrates and sectioned both parallel and transversely to the Ni/NiO interface.Electrochemically-polished nickel sheet of 99.995% purity was oxidized at 1273 K in 0.1 MPa oxygen partial pressure for times between 5 s and 25 h. Parallel sections were produced using a combination of electropolishing of the nickel substrate and ion-beam thinning of the scale to any desired depth in the scale. Transverse sections were prepared by encasing stacked strips of oxidized nickel sheet in epoxy resin, sectioning transversely and ion-beam thinning until thin area spanning one or more interfaces was obtained.


Polymer ◽  
2016 ◽  
Vol 82 ◽  
pp. 285-294 ◽  
Author(s):  
Alamelu Suriya Subramanian ◽  
Ju Nie Tey ◽  
Liying Zhang ◽  
Bo Hui Ng ◽  
Sunanda Roy ◽  
...  
Keyword(s):  

2021 ◽  
Vol 96 ◽  
pp. 107122
Author(s):  
Mohamed Nasr Saleh ◽  
Nataša Z. Tomić ◽  
Aleksandar Marinković ◽  
Sofia Teixeira de Freitas

Cosmetics ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 45
Author(s):  
Eduardo Guzmán ◽  
Laura Fernández-Peña ◽  
Lorenzo Rossi ◽  
Mathieu Bouvier ◽  
Francisco Ortega ◽  
...  

This work analyzes the dispersion of two highly hydrophobic actives, (9Z)-N-(1,3-dihydroxyoctadecan-2-yl)octadec-9-enamide (ceramidelike molecule) and 2,6-diamino-4-(piperidin-1-yl)pyrimidine 1-oxide (minoxidil), using oil-in-water nanoemulsions with the aim of preparing stable and safe aqueous-based formulations that can be exploited for enhancing the penetration of active compounds through cosmetic substrates. Stable nanoemulsions with a droplet size in the nanometric range (around 200 nm) and a negative surface charge were prepared. It was possible to prepare formulations containing up to 2 w/w% of ceramide-like molecules and more than 10 w/w% of minoxidil incorporated within the oil droplets. This emulsions evidenced a good long-term stability, without any apparent modification for several weeks. Despite the fact that this work is limited to optimize the incorporation of the actives within the nanoemulsion-like formulations, it demonstrated that nanoemulsions should be considered as a very promising tool for enhancing the distribution and availability of hydrophobic molecules with technological interest.


2013 ◽  
Vol 51 (23) ◽  
pp. 4992-4997 ◽  
Author(s):  
Kai Luo ◽  
Tao Xie ◽  
Javid Rzayev
Keyword(s):  

2020 ◽  
Vol 1 (9) ◽  
pp. 3182-3188
Author(s):  
Hsing-Ying Tsai ◽  
Yasuyuki Nakamura ◽  
Takehiro Fujita ◽  
Masanobu Naito

Epoxy resins incorporating aromatic disulfide bonds demonstrated improved adhesive properties with increasing temperature below their glass transition points.


Author(s):  
Stephen M. Cohen ◽  
Brenda H. Cohen

America’s Scientific Treasures is a comprehensive travel guide, designed for adults, that takes the reader to well-known and lesser-known sites of scientific and technological interest in the United States. The book is divided into nine geographical chapters. Subdivided by states, each chapter is represented by its scientific and technological treasures, including museums, arboretums, zoos, national parks, planetariums, natural or technological points of interest, and the homes of famous scientists. While the book is aimed at adults, many of the sites may also be of interest to teens and younger children. The traveler is provided with essential information, including addresses, telephone numbers, hours of entry, handicapped access, dining facilities, dates open and closed, available public transportation, and websites. Nearly every site included here has been visited by the authors. Although written with scientists in mind, this book is for anyone who likes to travel and visit places of historical and scientific interest. Included are photographs of many sites within each state.


Author(s):  
Jose Jonathan Rubio Arias ◽  
Isabela Custodio Mota ◽  
Lais Schmidt Albuquerque ◽  
Karim Dahmouche ◽  
Maria de Fatima Vieira Marques

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