Journal ArticleDOI
The Surface Reactivity Of Vermiculite Towards Hexamethylene Diisocyanate (HMDI)
TLDR
The reaction of hexamethylene diisocyanate with the surface of heat-activated vermiculite parallels the reactions with the oxides SiO2, Al2O3, MgO considered individually, which a number of authors have already described.Abstract:
The reaction of hexamethylene diisocyanate with the surface of heat-activated vermiculite parallels the reactions with the oxides SiO2, Al2O3, MgO considered individually, which a number of authors have already described. The fixation ratio is about 5 molecules per 100 A2 area. Nearly one half of the grafted molecules retain a “free” isocyanate function, which is requisite for a subsequent polyaddition of the processed mineral. The interaction with vermiculite occurs according to three principal processes; (i) formation of a surface urethane, (ii) formation of a surface carbamate, (iii) fixation by hydrogen bonds.read more
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Book ChapterDOI
Chapter 10.3 Clay Mineral– and Organoclay–Polymer Nanocomposite☆
TL;DR: In this article, the authors describe inorganic-organic hybrid materials as the subject of intensive research because of their huge potential for novel applications and present the numerous opportunities that nanocomposites offer.
Book ChapterDOI
Smectitic Clays as Ionic Macromolecules
TL;DR: In this paper, a special type of two-dimensional ionic macromolecule (i.e., nonsmectitic clay minerals) are represented, which carry negative charges that are balanced by gegen-ions.
Book ChapterDOI
Chapter 13.3 - Fibrous Clay Mineral–Polymer Nanocomposites
TL;DR: In this paper, a review of polymer and biopolymer nanocomposites based on sepiolite and palygorskite fibrous clay minerals is presented, with the aim to call the attention of clay scientists and engineers to the numerous opportunities that this type of new materials offers.
Clay-Organic Interactions: Organoclay Complexes and Polymer-Clay Nanocomposites
TL;DR: Clay minerals are silicates that, due to their unique characteristics (layer or fibrous structures, ion exchange capacity, variability in chemical composition and in electrical charge of particles, etc.), present special physicochemical behaviors that determine their surface properties and, therefore, their interactions with organic substances.
Book ChapterDOI
Praktische Verwendung und Einsatzmöglichkeiten von Tonen
TL;DR: In this paper, the authors describe a set of anspruchsvollen Keramiken (Kap. 1.1; 5.4) that werden seit jeher von den Menschen zum Hausbau (Lehmbauweise, Fachwerkbau) genutzt, zur Herstellung von Gebrauchskeramik des taglichen Lebens, von Baurohstoffen (Klinker, Ziegeln, Dachpfannen), aber a
References
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Book
Introduction to Infrared and Raman Spectroscopy
TL;DR: Theoretical analysis of molecular vibrational and rotational spectra has been studied in this paper, with a focus on the Vibrational Origin of Group Frequencies (VIB).
Organic Chemistry (2nd Edition)
TL;DR: In this paper, it was shown that butane is not very acidic and that carbon is not a very electronegative element and is generally not capable of stabilizing a negative charge.