Thermal analysis and polymers are two subjects in the field of chemistry and materials sciences that have not developed to the level commensurate with their importance. In this paper the reasons for this deficiency are traced to the history of the development of these subjects which led to only limited availability of courses of instruction. A first remedy to this problem is suggested, teaching via the internet. The attempt by the author to generate such a course is described in this paper. The course contains an up-to-date store of basic information. It is divided into 36 lectures and displayed in about 3000 computer screens filled with graphs, text, and hypertext. All lectures are downloadable. Including presentation software, each lecture requires only 1–3 Mbyte of computer memory. The inclusion of color,movies, and sound would exceed the capacity of most presently available personal computers,but might point the way to future of teaching the ever increasing number of subjects.
Senitkova I., Tomcik T. Indoor materials impact to indoor air quality, SEMC — The Fourth International Conference on Structural Engineering, Mechanics and Computation , University of Cape Town, South Africa, 6–8 September
Authors:Victor Sebastian, Saif A. Khan and Amol A. Kulkarni
Advanced functional materials occupy a prominent place in the day-to-day life of a significant portion of the global population. The impact of these materials on the quality of human life is seen either
Authors:J. Letoffe, C. Sigala, R. Chiriac, C. Dutheil and J. Carre
A thermogravimetry (TG) - gas chromatography (GC) - mass spectrometry (MS) coupling has been developed in order to analyse
complex gaseous mixtures which are evolved during degradation process of materials. A self-contained interface has been built
and tested with different compounds as hydrocarbon products, copolymers and gaseous mixtures from urban landfill.
Authors:L. Zane Miller, Jeremy L. Steinbacher, Tania I. Houjeiry, Ashley R. Longstreet, Kendra L. Woodberry, B. Frank Gupton, Banghao Chen, Ron Clark and D. Tyler McQuade
Monodisperse silica microcapsules are typically fabricated using hard templating methods. Though soft templating methods are known, none yet provides a fast and easy method to produce monodisperse capsules. Herein, we describe a mesofluidic strategy whereby monodisperse droplets of reactive silica precursors are formed using a snap-off mechanism via a T junction. Both the mesofluidic system and the composition of the reactive silica formulation are critical features. Using solid- and solution-state 29Si nuclear magnetic resonance, scanning electron microscopy, and optical microscopy, we have developed models for why some formulations form exploding capsules, why some capsules contain crystalline materials, and why some capsules have thin or thick walls.
Authors:Lin-Quan Liao, Hong-Jian Wei, Ji-Zhen Li, Xue-Zhong Fan, Ya Zheng, Yue-Ping Ji, Xiao-Long Fu, Ya-Jun Zhang and Fang-Li Liu
Therefore, compatibility of PNIMMO with energetic materials in propellants or explosives is most important aspects of PNIMMO in practical application. However, investigations on these two aspects are rarely reported. Therefore, this study
Multiwall carbon nanotubes were synthesized either on the outer surface of iron containing mesoporous silicates using catalytic chemical vapor deposition (CCVD) or in the pore system of morphologically different mesoporous materials (hexagonal or spherical shapes) with graphitization of the template molecules. Transmission electron microscopy (TEM) study shows that the CCVD method resulted in long, bent and well graphitized carbon nanotubes on impregnated samples irrespective to the morphology of the silicate. Isomorphously substituted spherical MCM-41 with low Si/Fe ratio was found to be active catalysts for carbon nanotube production in CCVD as well. Synthesis of MWNTs with graphitization of template molecules in the pores of MCM-41 was successful in hexagonal MCM-41 samples irrespective that they contain or not iron in the silicate framework. Carbon nanotube formation was not observed in spherical derivatives of these samples during the graphitization process.
Authors:G. Lizia Thankam and Neelakantan Thurvas Renganathan
. Its quality is controlled during manufacture, resulting in a much less variable material than industrial pozzolans that are by-products. In the 1960s, metakaolin was first used in Brazil for construction of large dams. The original intention was to
Authors:Béla Rácz, György Szakmány and Katalin T. Biró
characterization of High Silica Content chipped stone tools and raw materials . Archaeometry 50/1 ( 2001 ) 12 – 29 . (Published online DOI: 10.1111/j.1475-4754.2007.00348.x)
Kulakovska 2002 L. V. Kulakovska : Aspects of the economy of the Korolevo Middle