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How to maximize the aspect ratio of clay nanoplatelets

Title data

Kalo, Hussein ; Möller, Michael W. ; Kunz, Daniel A. ; Breu, Josef:
How to maximize the aspect ratio of clay nanoplatelets.
In: Nanoscale. Vol. 4 (21 September 2012) Issue 18 . - pp. 5633-5639.
ISSN 2040-3372
DOI: https://doi.org/10.1039/c2nr31322g

Abstract in another language

Melt-synthesis yielded lithium-fluorohectorites (Li-hect(x)) with variable layer charge (x = 0.4, 0.6, 0.8, 1.0). Counterintuitively, both tactoid diameter and intracrystalline reactivity increased concomitantly with increasing layer charge. This way hectorites with very large diameters were obtained (d(50%) = 48 μm) that nevertheless still spontaneously delaminate when immersed into water and nano-platelets with huge aspect ratios (>10 000) are formed. Melt-synthesis of Li-hect(x) has been performed in an open glassy carbon crucible allowing for easy scaling to batches of 500 g. These unprecedented huge aspect ratio fillers promise great potential for flame retardants and barrier applications.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry I > Chair Anorganic Chemistry I - Univ.-Prof. Dr. Josef Breu
Research Institutions > Collaborative Research Centers, Research Unit > SFB 840 Von partikulären Nanosystemen zur Mesotechnologie
Research Institutions > Collaborative Research Centers, Research Unit > SFB 840 Von partikulären Nanosystemen zur Mesotechnologie > SFB 840 - TP A 6
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry I
Research Institutions
Research Institutions > Collaborative Research Centers, Research Unit
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 21 Mar 2018 13:05
Last Modified: 21 Mar 2018 13:05
URI: https://eref.uni-bayreuth.de/id/eprint/9728