Effects of Particle-Hydrogel Interactions on Hydrogel Stiffness

Slides:

Advertisements

Similar presentations

Mechanics of Composite Materials

Advertisements

Module A-2: SYNTHESIS & ASSEMBLY

Nanolatex based nanocomposites: control of the filler structure and reinforcement. A. Banc 1 *, A-C. Genix 1, C. Dupas, M. Chirat 1, S.Caillol 2, and J.Oberdisse.

Ferrofluids Charles Wolfe, Newell Jensen, Jonathan Hogander and Seth McDonough.

Structural Properties of Nanocomposites  Mike Vogel, KIPP: Houston High School  A&M Advisors: Dr. Dimitris Lagoudas, Dr. Daniel Davis, Patrick Klein,

Colloidal stabilization by nano-particle halos Ard Louis Dept. of Chemistry.

Materials Composites. Introduction The major problem in the application of polymers to engineering is their low stiffness and strength compared to steel.

CHAPER THREE COMPOSITES MATERIALS REINFORCED POLYMER Introduction The major problem in the application of polymers in engineering is their low stiffness.

Eliza Montgomery The Pennsylvania State University

Engineering Chemistry 14/15 Fall semester Instructor: Rama Oktavian Office Hr.: M.13-15, Tu , W , Th ,

Ali Jafry Teacher Pre Calculus & Pre AP Pre Calculus Madison High School for Meteorology and Space Science- (Magnet School)

Increased surface area on nanoparticles

MetalNonmetal Ionic Bond: Metal + Nonmetal Metals: lose valence electrons –form cation –form cation (+ ion) Nonmetals: gain electrons anion –form anion.

Carbon Nanotube Composites Presentation by Jason Morejon What are CNT Composites? How do they work? What affects how well they work? Improvement Methods.

Fluid Interface Atomic Force Microscopy (FI-AFM) D. Eric Aston Prof. John C. Berg, Advisor Department of Chemical Engineering University of Washington.

Solidification, Crystallization & Glass Transition  Cooling the Melt  solidification  Crystallization versus Formation of Glass  Parameters related.

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300.

Chapter 2 Macromechanical Analysis of a Lamina 2D Stiffness and Compliance Matrix for Unidirectional Lamina Dr. Autar Kaw Department of Mechanical Engineering.

Gases and their Properties. Kinetic-Molecular Theory Gases = large #’s of tiny particles spaced far apart Gases = large #’s of tiny particles spaced far.

NSF REU site run as Summer Undergraduate Research Fellowship leveraged with Georgia Tech and Siemens Foundation support involved 8-weeks of immersion in.

Chapter Seven: Ionic Bonds and Ionic Compounds. Formation of Ionic Compounds Compounds composed of cations and anions are called ionic compounds They.

서울대학교 차세대 기계항공시스템 창의설계 인력양성사업단 기계항공공학부 차세대 기계항공시스템 창의설계 인력양성사업단 1. 연 사 : Prof. Peter M. Pinsky Department of Mechanical Engineering, Stanford University,

Table 4. Mechanical properties of repair and substrate concrete

Hydraulic and Pneumatic Systems

36th Dayton-Cincinnati Aerospace Sciences Symposium

Computational Prediction of Mechanical Performance of Particulate-Reinforced Al Metal-Matrix Composites (MMCs) using a XFEM Approach Emily A. Gerstein.

Computational Techniques for Efficient Carbon Nanotube Simulation

Introducing and classifying materials

Modulus of elasticity (GPa) Shear modulus elasticity (GPa)

The Principles of cation and anion exchange capacity

Thermoreversible ABC Polypeptoid Hydrogels

Types of Solids There are three main types of solid:

Chemical Formulas & Compounds Science 10 Unit 2.

Properties of Materials

M. M. Shokrieh*, M. Salamat-talab

Composites Composites form a class of materials that satisfy such rigid, often contradictory requirements as ensuring minimum construction mass, maximum.

Rigidity Modulus (Gpa)

Oil and water properties

Presented by: PARISA KHOSHNOUD Materials Science and Engineering

M. M. Shokrieh*, M. Salamat-talab

Materials: engineering, science, processing and design, 2nd edition Copyright (c)2010 Michael Ashby, Hugh Shercliff, David Cebon.

Ionic Bonds Main Concept:

Selected Measurements

Jos Derksen & Radompon Sungkorn Chemical & Materials Engineering

Atoms, Molecules, and Ions

Year 1 Number – number and place value

Theoretical Investigations of the Nature of p-p Interactions C

Chapter-6 : Biomaterials

Structural Defects Mechanical Properties of Solids

Elastic Properties of Solids, Part III Topics Discussed in Kittel, Ch

Chapter 11 Liquids, solids, and intermolecular forces

Structural Defects Mechanical Properties of Solids

R. F. Giese Geology Clays as Colloids R. F. Giese Geology

Solutions & Molarity What is a solution?

Chemical Formulas & Compounds Science 10 Unit 2.

Chemical Formulas & Compounds Science 10 Unit 2.

Chapter 12 Case Studies: Hybrids

Computational Techniques for Efficient Carbon Nanotube Simulation

Surface Engineering By Israa Faisal University of Al-Qadisiyah

Formation of Ionic Bonds

AS Chemistry Homework Ionic Bonding

M. M. Shokrieh*, M. Salamat-talab

TiO2 Nanoparticle Self-assembly onto Tailored Carbon Nanotubes

Variations in tissue stiffness.

Chapter 13- Water the Universal Solvent

Functional Hydrogels for Next-Generation Batteries and Supercapacitors

Schematic illustration of ferromagnetic soft continuum robots with hydrogel skins. Schematic illustration of ferromagnetic soft continuum robots with hydrogel.

Presentation transcript:

Effects of Particle-Hydrogel Interactions on Hydrogel Stiffness Valeria Tohver Milam School of Materials Science & Engineering and Dept of Biomedical Engineering Georgia Institute of Technology, Atlanta, GA Hydrogel matrix Embedded colloids as interactive filler Our goal is to generate hydrogels with tunable mechanical properties. We have studied the effects of hydrogel composition, volume fraction as well as the effects of adding cationic and anionic polystyrene lattices and carbon nanotubes on the shear elastic modulus of hydrogels. We have found that a shear modulus range of 0.05-7x104 Pa through hydrogel composition and volume fraction effects alone. COO - COO - NH 3 + COO COO - - COO COO - - COO COO - - COO COO - - COO COO - - COO COO - - COO COO - - COO COO COO COO - - - - Inert or slightly repulsive Electrostatically attractive particle-hydrogel interface particle-hydrogel interface