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Dispersion stability, microstructure and phase transition of anisotropic nanodiscs Ravi Kumar Pujala
Springer Nature - Springer Physics and Astronomy (R0) eBooks 2014 English International Available online
View online- Format:
- Book
- Author/Creator:
- Pujala, Ravi Kumar, author.
- Series:
- Springer theses 2190-5053
- Springer Theses 2190-5053
- Language:
- English
- Subjects (All):
- Colloids.
- Nanostructured materials.
- Anisotropy.
- anisotropy.
- Physical Description:
- 1 online resource
- Place of Publication:
- Cham Springer 2014
- Language Note:
- English
- Summary:
- 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 mediais investigated. Distinct phase separation, equilibrium fluid and equilibrium gel phasesare observed in nanoclay dispersions with extensive aging. The work thenexplores 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
- Contents:
- Introduction
- Materials and characterization techniques
- Phase diagram of Laponite dispersions
- Anisotropic ordering in nanoclay dispersions induced by water-air Interface
- Phase diagram of aging Montmorillonite dispersions
- Sol state and gelation kinetics in mixed nanoclay dispersions
- Aging dynamics in mixed nanoclay dispersions
- Thermal ordering in mixed nanoclay dispersions
- Aggregation and scaling behavior of nanoclays in alcohol solutions
- Summary
- Notes:
- "Doctoral thesis accepted by Jawaharlal Nehru University, New Delhi, India"
- Includes bibliographical references
- Online resource; title from PDF title page (SpringerLink, viewed June 18, 2014)
- Other Format:
- Printed edition:
- ISBN:
- 9783319045559
- 3319045555
- 3319045547
- 9783319045542
- OCLC:
- 881469552
- Access Restriction:
- Restricted for use by site license
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