Engineering and Materials Research Seminar Series

Investigating the formation of physically cross linked clay mineral gels

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Seminars

As part of the School of Science and Technology's Engineering and Materials Research Seminar Series, James Rawlings, NTU presents: Investigating the formation of physically cross linked clay mineral gels.

  • From: Wednesday 1 May 2019, 1 pm
  • To: Wednesday 1 May 2019, 2 pm
  • Location: 015, CELS, Nottingham Trent University, Clifton Campus, Clifton Lane, Nottingham, NG11 8NS

Past event

Event details

As part of the School of Science and Technology's Engineering and Materials Research Seminar Series, James Rawlings, NTU presents: Investigating the formation of physically cross linked clay mineral gels.

Abstract

Clay minerals have seen particular interest in recent years as filler materials used to produce nanocomposites with unique properties and functions one of these interests is the family of smectite clays, which poses a layered structure akin to graphene, and the nature of this structure is what makes them suitable candidates for use in nanocomposite applications. Nanocomposites incorporating smectite clays have been demonstrated to give better performance to areas such as mechanical strength, fire retardency, dielectric performance etc. Recent work conducted at NTU has exploited the use of nanoclay into several cutting edge applications including ultra-light weight materials, bacteria cellulose hydrogels and foam systems. Interestingly from this work we have found two types of commercially available smectite clays; natural montmorillonite (Cloisite Na+) and synthetic Lucentite SWN, which poses very similar crystal structures, but exhibit vastly different behaviours in these wider applications. A possible reason for this is that these clays poses the ability to form physically self-cross linked gel structures. However the SWN clay shows this behaviour at much lower clay concentrations than the Cloisite Na+.


Despite the ability of the clay to form these gel structures the mechanisms behind it is poorly understood. The dispersion of the clay particles into the aqueous environment can lead to the production of rather complicated sols, and even the nature of clay colloids, which have been known for many years are not well understood!
In this work, we present results exploring the nature of these clay colloids, both in the micro and nano size range of particles, and the possible mechanisms by which this physically self-cross linking behaviour occurs.

This seminar is hosted by Dr Ian Shuttleworth

All Welcome

For any enquires please contact Dr Ian Shuttleworth

Location details

Room/Building:

015, CELS

Address:

Nottingham Trent University
Clifton Campus
Clifton Lane
Nottingham
NG11 8NS

Past event

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