An Introduction to Polymer Physics -...
Transcript of An Introduction to Polymer Physics -...
1
An Introduction to An Introduction to Polymer PhysicsPolymer Physics
Wentao HaoWentao HaoCollege of Chemical EngineeringCollege of Chemical EngineeringHefei University of TechnologyHefei University of Technology
2Wentao Hao, Hefei University of
Technology
Why & WhatWhy & What
Why do you choose this course?Why do you choose this course?What do you know about polymer (physics)?What do you know about polymer (physics)?
3Wentao Hao, Hefei University of
Technology
PhysicsPhysics
Physics (Physics (GreekGreek: : physisphysis –– meaning "meaning "naturenature") ") is a is a natural sciencenatural science; it is the study of ; it is the study of mattermatterand its and its motionmotion through through spacetimespacetime and all and all that derives from these, such as that derives from these, such as energyenergy and and forceforce. More broadly, it is the general . More broadly, it is the general analysis of analysis of naturenature, conducted in order to , conducted in order to understand how the understand how the worldworld and and universeuniversebehave.behave.
From Wikipedia, the free encyclopedia
4Wentao Hao, Hefei University of
Technology
Polymer physics Polymer physics
Polymer physics is the field of Polymer physics is the field of physicsphysicsassociated to the study of associated to the study of polymerspolymers, their , their fluctuations, fluctuations, mechanical propertiesmechanical properties, as well , as well as the as the kinetics of reactionskinetics of reactions involving involving degradation and degradation and polymerisationpolymerisation of of polymerspolymersand and monomersmonomers respectively. respectively.
From Wikipedia, the free encyclopedia
5Wentao Hao, Hefei University of
Technology
Polymer physicsPolymer physics
However, it is not a clear description.However, it is not a clear description.In my opinion, polymer physics can also be In my opinion, polymer physics can also be defined as defined as the relationship between thethe relationship between thestructure and properties of polymerstructure and properties of polymer..
6Wentao Hao, Hefei University of
Technology
1.1. Introduction to the courseIntroduction to the course
1.1 Polymer and scope of the book1.1 Polymer and scope of the book
1.2 The chemical nature of polymers1.2 The chemical nature of polymers
1.3 Some useful physical techniques1.3 Some useful physical techniques
2
7Wentao Hao, Hefei University of
Technology
1.1 polymer and scope of the 1.1 polymer and scope of the bookbook
What is polymer?What is polymer?MacromoleculeMacromoleculeLong chainLong chainChemical bondsChemical bondsRotation Rotation FlexibilityFlexibilityCondensed state structureCondensed state structureMolecular motionMolecular motionMechanical performanceMechanical performance…………
diversity
8Wentao Hao, Hefei University of
Technology
9Wentao Hao, Hefei University of
Technology
rotation
10Wentao Hao, Hefei University of
Technology
What’s this?
11Wentao Hao, Hefei University of
Technology
Linked units are more and more……
12Wentao Hao, Hefei University of
Technology
flexibility
3
13Wentao Hao, Hefei University of
Technology
motion
14Wentao Hao, Hefei University of
Technology
motion
15Wentao Hao, Hefei University of
Technology
Chemists in Japan have created light-driven polymer films that can walk like inchworms and move like robotic arms.
16Wentao Hao, Hefei University of
Technology
17Wentao Hao, Hefei University of
Technology
Condensed state
structure
18Wentao Hao, Hefei University of
Technology
Condensed state
structure
4
19Wentao Hao, Hefei University of
Technology
The weapon is fed from translucent, double-column box magazines (molded from a high-strength polymer) with a 30-round capacity and an empty weight of 130 g (4.59 oz). The light machine gun version of the AUG uses an extended 42-round magazine.
Mechanical Mechanical performanceperformance 20
Wentao Hao, Hefei University of Technology
Super aborsobantpolymer
EAT, SLEEP, DO –POLYMER
21Wentao Hao, Hefei University of
Technology
How to understand
the diversity of polymers?
22Wentao Hao, Hefei University of
Technology
1.2 1.2 classification of polymersclassification of polymers
linearlinear
A. Classification based on structureA. Classification based on structure
23Wentao Hao, Hefei University of
Technology
BranchedBranched
24Wentao Hao, Hefei University of
Technology
BranchedBranched
5
25Wentao Hao, Hefei University of
Technology
crosslinked
26Wentao Hao, Hefei University of
Technology
crosslinked
27Wentao Hao, Hefei University of
Technology
crosslinkedcrosslinked
28Wentao Hao, Hefei University of
Technology
29Wentao Hao, Hefei University of
Technology 30Wentao Hao, Hefei University of
Technology
ThermoplasticsThermoplastics
B. Classification based on properties
6
31Wentao Hao, Hefei University of
Technology
So, what is the main feature of thermoplastics?
32Wentao Hao, Hefei University of
Technology
1950's Thermoset flower necklace with rhinestone
centers
high performance thermoset composites
33Wentao Hao, Hefei University of
Technology 34Wentao Hao, Hefei University of
Technology
35Wentao Hao, Hefei University of
Technology
Rubbers
36Wentao Hao, Hefei University of
Technology
Rubber band gun
7
37Wentao Hao, Hefei University of
Technology
amorphous crystalline crosslinked
thermoplastics Thermosets or Rubbers
38Wentao Hao, Hefei University of
Technology
Needle-free syringe molded of Vectra® liquid crystal polymer
LCP
39Wentao Hao, Hefei University of
Technology 40Wentao Hao, Hefei University of
Technology
41Wentao Hao, Hefei University of
Technology
1.3 Some useful physical techniques1.3 Some useful physical techniques
Differential Scanning Differential Scanning CalorimetryCalorimetry (DSC)(DSC)
42Wentao Hao, Hefei University of
Technology
8
43Wentao Hao, Hefei University of
Technology
XX--ray scatteringray scattering
44Wentao Hao, Hefei University of
Technology
45Wentao Hao, Hefei University of
Technology 46Wentao Hao, Hefei University of
Technologyhttp://tiger.chm.bris.ac.uk/cm1/RogerEC/welcome.htm
47Wentao Hao, Hefei University of
Technology
Carbon dioxide also displays, 2 stretching and 1 bend vibration.
48Wentao Hao, Hefei University of
Technology
9
49Wentao Hao, Hefei University of
Technology 50Wentao Hao, Hefei University of
Technology
51Wentao Hao, Hefei University of
Technology
SEM & TEMSEM & TEM
52Wentao Hao, Hefei University of
Technology
STMSTM
53Wentao Hao, Hefei University of
Technology 54Wentao Hao, Hefei University of
Technology
AFMAFM
10
55Wentao Hao, Hefei University of
Technology 56Wentao Hao, Hefei University of
Technology
Time to Time to Ask Ask
QuestionsQuestions
57Wentao Hao, Hefei University of
Technology
HOMEWORKHOMEWORK
Why shall we learn the polymer structure?Why shall we learn the polymer structure?What are the four levels of polymer structure?What are the four levels of polymer structure?What is the short range structure? What is the short range structure? What is What is ““configurationconfiguration”” of polymer?of polymer?Read some relative books or literatures and find Read some relative books or literatures and find the answer.the answer.