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Author: Lei Pei Publisher: ISBN: Category : Electronic dissertations Languages : en Pages : 207
Book Description
In my research, I have performed many characterization and fabrication experiments that are based on tools of analytical chemistry, materials chemistry, and surface science. My research projects are as follows. (1) Fabrication of transparent polymer templates for nanostructured amorphous silicon photovoltaics was done using low-cost nanoimprint lithography of polydimethylsiloxane. This approach provides a test bed for absorption studies in nanostructured film geometries and should result in improved light capturing designs in thin-film solar cells. Nanopatterned polymer films were characterized by scanning electron microscopy and optical measurements. (2) A straightforward method for fabricating freely suspended, thin, carbon nanotube (CNT) membranes infiltrated with polymers was developed. This process is a new approach for making thin, reinforced, smooth films or membranes with high concentrations of CNTs, which may lead to higher performance materials. Characterization of the film and membrane was performed via scanning electron microscopy and atomic force microscopy. (3) Laser activation-modification of semiconductor surfaces (LAMSS) was carried out on silicon with a series of 1-alkenes. A key finding from this study is that the degree of surface functionalization in a LAMSS spot appears to decrease radially from the center of the spot. These laser spots were studied by time of flight secondary ion mass spectrometry (ToF-SIMS), and the resulting spectra were analyzed using a series of chemometrics methods. (4) A large ToF-SIMS data set from multiple coal samples spanning a wide range of coal properties was subjected to a chemometrics analysis. This analysis separates the spectra into clusters that correspond to measurements from classical combustion analyses. Thus ToF-SIMS appears to be a promising technique for analysis of this important fuel. (5) Several experiments on carbon nanotube processing were performed in my research, including carbon nanotube sheet formation, carbon nanotube purification, carbon nanotube dispersion, and carbon nanotube functionalization. X-ray photoelectron spectroscopy was a key characterization tool for many of these experiments.
Author: Lei Pei Publisher: ISBN: Category : Electronic dissertations Languages : en Pages : 207
Book Description
In my research, I have performed many characterization and fabrication experiments that are based on tools of analytical chemistry, materials chemistry, and surface science. My research projects are as follows. (1) Fabrication of transparent polymer templates for nanostructured amorphous silicon photovoltaics was done using low-cost nanoimprint lithography of polydimethylsiloxane. This approach provides a test bed for absorption studies in nanostructured film geometries and should result in improved light capturing designs in thin-film solar cells. Nanopatterned polymer films were characterized by scanning electron microscopy and optical measurements. (2) A straightforward method for fabricating freely suspended, thin, carbon nanotube (CNT) membranes infiltrated with polymers was developed. This process is a new approach for making thin, reinforced, smooth films or membranes with high concentrations of CNTs, which may lead to higher performance materials. Characterization of the film and membrane was performed via scanning electron microscopy and atomic force microscopy. (3) Laser activation-modification of semiconductor surfaces (LAMSS) was carried out on silicon with a series of 1-alkenes. A key finding from this study is that the degree of surface functionalization in a LAMSS spot appears to decrease radially from the center of the spot. These laser spots were studied by time of flight secondary ion mass spectrometry (ToF-SIMS), and the resulting spectra were analyzed using a series of chemometrics methods. (4) A large ToF-SIMS data set from multiple coal samples spanning a wide range of coal properties was subjected to a chemometrics analysis. This analysis separates the spectra into clusters that correspond to measurements from classical combustion analyses. Thus ToF-SIMS appears to be a promising technique for analysis of this important fuel. (5) Several experiments on carbon nanotube processing were performed in my research, including carbon nanotube sheet formation, carbon nanotube purification, carbon nanotube dispersion, and carbon nanotube functionalization. X-ray photoelectron spectroscopy was a key characterization tool for many of these experiments.
Author: Vikas Mittal Publisher: Woodhead Publishing ISBN: 1782423214 Category : Technology & Engineering Languages : en Pages : 321
Book Description
Manufacturing of Nanocomposites with Engineering Plastics collates recent research findings on the manufacturing, properties, and applications of nanocomposites with engineering plastics in one comprehensive volume. The book specifically examines topics of engineering plastics, rheology, thermo-mechanical properties, wear, flame retardancy, modeling, filler surface modification, and more. It represents a ready reference for managers and scholars working in the areas of polymer and nanocomposite materials science, both in industry and academia, and provides introductory information for people new to the field. - Provides a comprehensive review of the most recent research findings - A single one-stop ready reference that assimilates knowledge on the development of nanocomposites with engineering plastics - Contributions from leading experts in the field - Provides examples of applications that will help with material selection - Chapters are designed to provide not only introductory information, but also to lead the reader to more advanced characterization tools
Author: Siva Yellampalli Publisher: IntechOpen ISBN: 9789533074986 Category : Science Languages : en Pages : 412
Book Description
Polymer nanocomposites are a class of material with a great deal of promise for potential applications in various industries ranging from construction to aerospace. The main difference between polymeric nanocomposites and conventional composites is the filler that is being used for reinforcement. In the nanocomposites the reinforcement is on the order of nanometer that leads to a very different final macroscopic property. Due to this unique feature polymeric nanocomposites have been studied exclusively in the last decade using various nanofillers such as minerals, sheets or fibers. This books focuses on the preparation and property analysis of polymer nanocomposites with CNTs (fibers) as nano fillers. The book has been divided into three sections. The first section deals with fabrication and property analysis of new carbon nanotube structures. The second section deals with preparation and characterization of polymer composites with CNTs followed by the various applications of polymers with CNTs in the third section.
Author: Vikas Mittal Publisher: John Wiley & Sons ISBN: 3527635092 Category : Technology & Engineering Languages : en Pages : 452
Book Description
The book series "Polymer Nano-, Micro- and Macrocomposites" provides complete and comprehensive information on all important aspects of polymer composite research and development, including, but not limited to, synthesis, filler modification, modeling, characterization as well as application and commercialization issues. Each book focuses on a particular topic and gives a balanced in-depth overview of the respective subfield of polymer composite science and its relation to industrial applications. With the books the readers obtain dedicated resources with infomation relevant to their research, thereby helping to save time and money. In this first volume in the series, authors from leading academic institutions and companies share their first-hand knowledge of nanotube-surface enhancements for use in polymer composites. All the important methods for the functionalization of nanotube fillers, including polymer wrapping, non-covalent modification with nanoparticles, silica layers or entrapped micelles, chemically induced growth of multilayers, techniques based on covalent bonding, such as polmer or quantum dot attachment, and direct polymerization approaches are covered.
Author: Publisher: I. K. International Pvt Ltd ISBN: 8190777017 Category : Ceramic materials Languages : en Pages : 436
Book Description
Papers presented at the Seventeenth International Symposium on Processing and Fabrication of Advanced Material XVII, held at New Delhi during 15-17 December 2008.
Author: Rajesh Kumar Verma Publisher: CRC Press ISBN: 1000952185 Category : Technology & Engineering Languages : en Pages : 321
Book Description
Polymer Nanocomposites: Fabrication to Applications offers readers an up-to-date interpretation of various polymeric nanocomposite materials and technologies via critical reviews. It covers developments and advancements in various nanomaterials, polymeric materials, biopolymers, and processes. It initiates from nanomaterial synthesis, fabrication, and characterization to the manufacturing aspect and feasible product applications of polymer-based nanocomposites. The prime focus is on polymer matrix nanocomposites and their future trends in the engineering sector. Features: Explores synthesis, characterization, properties, fabrication/processing, and applications of polymer nanocomposite materials Elaborates on polymer manufacturing phase challenges using various control methods and statistical tools and modules Includes machining and micro (μ) machining investigation on the polymer nanocomposites Discusses modeling, simulation, and optimization of process parameters during the machining processes and applications of additive manufacturing Comprehends the significance of nanomaterials functionalizing synthetic fibrous and biocompatible composites This book is aimed at researchers and graduate students in mechanical engineering, materials science, polymers, composites, and nanomaterials.
Author: Roham Rafiee Publisher: Elsevier ISBN: 0323482228 Category : Science Languages : en Pages : 588
Book Description
Carbon Nanotube-Reinforced Polymers: From Nanoscale to Macroscale addresses the advances in nanotechnology that have led to the development of a new class of composite materials known as CNT-reinforced polymers. The low density and high aspect ratio, together with their exceptional mechanical, electrical and thermal properties, render carbon nanotubes as a good reinforcing agent for composites. In addition, these simulation and modeling techniques play a significant role in characterizing their properties and understanding their mechanical behavior, and are thus discussed and demonstrated in this comprehensive book that presents the state-of-the-art research in the field of modeling, characterization and processing. The book separates the theoretical studies on the mechanical properties of CNTs and their composites into atomistic modeling and continuum mechanics-based approaches, including both analytical and numerical ones, along with multi-scale modeling techniques. Different efforts have been done in this field to address the mechanical behavior of isolated CNTs and their composites by numerous researchers, signaling that this area of study is ongoing. - Explains modeling approaches to carbon nanotubes, together with their application, strengths and limitations - Outlines the properties of different carbon nanotube-based composites, exploring how they are used in the mechanical and structural components - Analyzes the behavior of carbon nanotube-based composites in different conditions
Author: Dimitrios Tasis Publisher: Royal Society of Chemistry ISBN: 1849735689 Category : Science Languages : en Pages : 293
Book Description
The purpose of this book is to summarize the basic chemical aspects for obtaining multifunctional carbon nanotube-based polymer composites, but also to highlight some of the most remarkable advances that occurred in the field during the last recent years.
Author: Yan Kang Publisher: ISBN: Category : Languages : en Pages : 66
Book Description
Surface modification is a good way to introduce desired physical, chemical or biological properties to materials without changing the characteristics of the bulk. Modifying polymer surfaces has drawn much attention because this process gives the potential to further increase the versatility of polymer materials. My work focuses on using colloidal nanoparticles to functionalize polyamide water treatment membranes and polycarbonate plastic sheets with nanoparticles with different purposes. Specifically, modifying polyamide membranes with colloidal copper nanoparticles or positively charged silica are described in the first part of this thesis. Coating polycarbonate sheets with positively charged silica nanoparticles is discussed in the second part. Fabrication and characterization of these nanoparticle functionalized substrates will be emphasized.
Author: Vikas Mittal Publisher: John Wiley & Sons ISBN: 3527331484 Category : Technology & Engineering Languages : en Pages : 379
Book Description
With its focus on the characterization of nanocomposites using such techniques as x-ray diffraction and spectrometry, light and electron microscopy, thermogravimetric analysis, as well as nuclear magnetic resonance and mass spectroscopy, this book helps to correctly interpret the recorded data. Each chapter introduces a particular characterization method, along with its foundations, and makes the user aware of its benefits, but also of its drawbacks. As a result, the reader will be able to reliably predict the microstructure of the synthesized polymer nanocomposite and its thermal and mechanical properties, and so assess its suitability for a particular application. Belongs on the shelf of every product engineer.
Author: Lei Pei
Author: Lei Pei
Author: Vikas Mittal
Author: Siva Yellampalli
Author: Vikas Mittal
Author: 
Author: Rajesh Kumar Verma
Author: Roham Rafiee
Author: Dimitrios Tasis
Author: Yan Kang
Author: Vikas Mittal