d v [(ZnYHZjvz 1-] WWW WW d YEQbWMP
DSpMWMHKmhM WW (UH (WW
d .2 - 943 7 EAL
W( X 0, (Zn6\2*_(;13
Mvowhm M m Mam
L1H u 201m EAvxzo 7 Eu? 0
, ALL? NAM . M7 796 w Hz
A 1 Au T 3:
NW 2 - Efwn L 60'2 0/ij e
Problem 1.
For each of the following polymerizations, write down the balanced chemical equation showing the
structure of the polymer formed, including the repeat units AND the end groups.
O
n H 2N
n
6
Prawn/m4
r_.-O.
Nylon-11 is polylwaminoundecanoic acid). In the polymerization of w-
aminoundecanoic acid H2N(CH2)1oCOOH, to produce this polymer, what weight
fraction of the reaction mixture will hav
510.606 Spring 2013
ln class exercises (#9)
Problem 1.
Write the structure of the polymers that result from the ROP of the following monomers (assume
organocatalytic ROP, initiated by benzyl alcoholan
Polymer chemistry and biology (510.606)
Lecture highlights, Spring 2016
M. Herrera-Alonso
TOPIC: MACROMOLECULES - GENERAL DEFINITIONS
Learning Objectives
- Definition of a polymer
- Characteristics of
times faster with CLMA than with tBuA. It is in agreement with
the general tendency that methacrylates are more reactive than
acrylates leading to copolymers with gradient structure. The
reverse react
Macromolecular drug carriers
Homework #3
Problem 1
Provide the final structure of the polymers resulting from the following ring-opening
polymerizations.
!
Problem 2
How much sodium does one need to p
Macromolecular drug carriers
Homework # 2
Problem 1
a) In the polymerization of 11-aminoundecanoic acid H2N(CH2)10COOH into Nylon-11, what weight
fraction of the reaction mixture will have the structu
Chapter 3 & 12:
Structures of Ceramics and Glasses
ISSUES TO ADDRESS.
How do the crystal structures of ceramic materials differ
from those for metals?
How do you name crystal structures?
Structure
In solids, atoms come together
to certain interatomic distance,
to bond with one another to lower energy
Bond Energies and Melting Temperatures for Various Substances
VDW
~ 1 kT to ~10 kT
H-bonds
Cova
Chapter 3: The Structure of Crystalline Solids
ISSUES TO ADDRESS.
How do atoms pack in crystal structures?
How does the density of a material depend on
its structure?
Chapter 3 - 1
close-packed
stac
Chapter 4: Imperfections in Solids
ISSUES TO ADDRESS.
What types of defects are present in solids?
Can the number and type of defects be varied
and controlled?
How do defects affect material proper
Crystallographic Planes
Adapted from Fig. 3.10,
Callister & Rethwisch 8e.
Chapter 3 - 1
Crystallographic Planes
Miller Indices: Reciprocals (inverse) of the (three)
axial intercepts for a plane, clea
Foundations of Materials Science and Engineering
Fall 2017
Homework 1 Solutions
Compiled by
Aliya D. Carter
Department of Materials Science & Engineering
Whiting School of Engineering
Johns Hopkins Un
Foundations of Materials Science and Engineering
Fall 2017
Homework 5 Solutions
Compiled by
Aliya D. Carter
Department of Materials Science & Engineering
Whiting School of Engineering
Johns Hopkins Un
Homework 2 Solutions Set
Problem 1.
The relationship between stress and strain is determined by following formula:
E
Where E is the elastic modulus with units of pressure (Force/Area)
Strain is a unit
Foundations of Materials Science and Engineering
Homework #5 Chapters 18, 20, 21
Due 12/7/17, at the beginning of class
Each problem is 10 points
1. Compute the electrical conductivity of a cylindrica
Foundations of Materials Science and Engineering
Homework #2 Chapters 6,7,8
Due 10/10/17, at the beginning of class
Each problem is 10 points
1. (6.3) A specimen of copper having a rectangular cross s
Foundations of Materials Science and Engineering
Fall 2017
Homework 4 Solutions
Compiled by
Aliya D. Carter
Department of Materials Science & Engineering
Whiting School of Engineering
Johns Hopkins Un
Foundations of Materials Science and Engineering
Fall 2017
Homework 3 Solutions
Compiled by
Aliya D. Carter
Department of Materials Science & Engineering
Whiting School of Engineering
Johns Hopkins Un
Foundations of Materials Science and Engineering
Homework #4 Chapter 10, Chapter 5
Due 11/14/17, at the beginning of class
Each problem is 10 points
1. Rewrite the expression for the total free energy
Foundations of Materials Science and Engineering
Homework #1 Chapters 2, 3, 4
Due 9/21/17, at the beginning of class
Each problem is 10 points
1.
(adapted from Problem 2.3)
Zinc has five naturally occ
Foundations of Materials Science and Engineering
Homework #3 Chapters 9,19
Due 10/31/17, at the beginning of class
Each problem is 10 points
1. The dietary unit of energy is the Calorie, as opposed to
EN510.312
Thermodynamics
In Class Exercise 6
1 mol of an ideal gas at 300K is compressed to half its volume at constant
temperature, and then heated at constant volu
EN510.312
Thermodynamics
In Class Exercise 7
Two allotropic forms of tin exist near room temperature. At room temperature, the
"normal" or white () tin has a stable
510.601 Structure of Materials
Handout #34
Solutions to Problem Set #5
Glide Planes and Screw Axes
In all of the following drawings, the c axis is perpendicular to the page.
1. (a) Mirror plane perpen
MSE 510.601
Handout #40
Solutions to Problem Session #6
1. (a) The component of the heat flux along the x1 axis can be written as
dT
+ k1 2 dT + k1 3 dT .
h1 = k1 1
dx
dx
dx
1
2
3
Since k1
510.601 Structure of Materials
Handout #39
Problem Set #7 - Fourier Series and Transforms
1. Determine the Fourier series coefcients representing the function shown in the plot
below, assuming that it