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  • Book
  • © 2014

Dispersion Stability, Microstructure and Phase Transition of Anisotropic Nanodiscs

Authors:

  1. Ravi Kumar Pujala

    1. School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India

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  • Nominated as an outstanding Ph.D. thesis by Jawaharlal Nehru University, New Delhi, India
  • A comprehensive exploration of the physical phenomena in nano clay systems
  • Looks at the equilibrium gels, isotropic-anisotropic transition, aging phenomenon
  • First study of the behavior of mixed nano clay dispersions
  • Includes supplementary material: sn.pub/extras

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (10 chapters)

  1. Front Matter

    Pages i-xvi
    PDF

  2. Introduction

    • Ravi Kumar Pujala
    Pages 1-16

  3. Materials and Characterization Techniques

    • Ravi Kumar Pujala
    Pages 17-36

  4. Phase Diagram of Aging Laponite Dispersions

    • Ravi Kumar Pujala
    Pages 37-51

  8. Aging Dynamics in Mixed Nanoclay Dispersions

    • Ravi Kumar Pujala
    Pages 103-117

  9. Thermal Ordering in Mixed Nanoclay Dispersions

    • Ravi Kumar Pujala
    Pages 119-129

  11. Summary

    • Ravi Kumar Pujala
    Pages 141-145

  12. Back Matter

    Pages 147-154
    PDF
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About this book

This thesis explores the dispersion stability, microstructure and phase transitions involved in the nanoclay system. It describes the recently discovered formation of colloidal gels via two routes: the first is through phase separation and second is by equilibrium gelation and includes the first reported experimental observation of a system with high aspect ratio nanodiscs. The phase behavior of anisotropic nanodiscs of different aspect ratio in their individual and mixed states in aqueous and hydrophobic media is investigated. Distinct phase separation, equilibrium fluid and equilibrium gel phases are observed in nanoclay dispersions with extensive aging. The work then explores solution behavior, gelation kinetics, aging dynamics and temperature-induced ordering in the individual and mixed states of these discotic colloids. Anisotropic ordering dynamics induced by a water-air interface, waiting time and temperature in these dispersions were studied in great detail along with aggregation behavior of nanoplatelets in hydrophobic environment of alcohol solutions.
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Keywords

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Authors and Affiliations

  • School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India

    Ravi Kumar Pujala

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Bibliographic Information

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Buy it now

eBook USD 84.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Hardcover Book USD 109.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Other ways to access

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