Physical Chemistry of Polymers 1

 

Lecture: online
Exercise: online

 

 

Scripts - Physical Chemistry of Polymers 1 (login with your JGU account)

 

Goal


This lecture aims at establishing a basis of knowledge and competence for understanding fundamental structure–property relations of polymers, such to arc further teaching contents in the fields of polymer chemistry and materials engineering.

 

Requirements


Basic knowledge in organic and physical chemistry as well as mathematics, as taught in bachelor-level classes of these fields.

 

 

09.032.641 Lecture: Introduction to Macromolecular Chemistry: Physical Chemistry of Polymers

 

Preface to the Winter Term 2021/22

 

Dear students:

The coming winter term offers a chance to return back to presence classes, after three semesters of online-learning only.  Yet, COVID19 still exerts danger. This brings us into a dilemma: shall we keep having online classes only, and therewith protect us from infections?  Or shall we take the risk of presence classes and thereby also profit from the great chances that this format brings?  This class attemts to offer both.  The lecture itself can be consumed purely digitally; in different formats even.  For this purpose, short scripts, each covering one of a total of nine lesson units of this lecture, are available to you as working materials in the "Scripts" section of this website and (alternatively), on our university`s e-learning platform Moodle.  In addition, nine accompanying digital lectures, in the format of both a video and an audio-podcast each, are available to you for streaming on this website and on Moodle.  You can view/listen them at home, supported by the scripts, and thus consume the lecture contents conveniently from your private place.  As further accompanying material, the textbook "Physical Chemistry of Polymers" (S. Seiffert, DeGruyter 2020) is recommended, which presents the content in even greater depth and detail.

In addition to that online content, you're invited to take part in a presence lesson format, which takes place on each Wednesday from noon till 2 p.m. (12:00...14:00) in lecture hall C03. In this presence class, we will vividly interact and deepen our understanding of the content. This will be achieved by solving sets of multiple-choice questions together, targeting at a deep-level understanting of the matter delivered in the online lesson units. Participation in this presence unit is voluntary, and the exam can be well passed without. It is to be expected, though, that true understanding of the lecture content can profit a lot from participation in this presence part of the class.

Accompanying to the lecture, there is an exercise. It takes place in presence. Dates are announced below on this website; a place (room) will be announced in our lecture and via e-Mail over JOGUStINe once we have one assigned.

Your teacher,
Prof. Dr. Sebastian Seiffert

 

Audio- and Videostreams

 

1. Introduction

Video: click here

Audio:


2. Ideal Chains

Video: click here

Audio:


3. Entropy Elasticity

Video: click here

Audio:


4. Real Chains

Video: click here

Audio:


5. Flory Theory

Video: click here

Audio:


6. Chain Dynamics

Vide: click here

Audio:


7. Flory–Huggins Theory

Video: click here

Audio:


8. Phase Diagrams 

Video: click here

Audio:


9. Osmotic Pressure 

Video: click here

Audio:


10. Schlusswort

Video: click here

Audio:

 

 

 

Topics and Contents


1. Introduction

Delimination of the Field of Macromolecular Chemistry, History of the Discipline, Definition of the Teaching and Learning Targets of this Lecture

2. Ideal Chains
Chain Conformation, End-to-End Distance, Radius of Gyration, Characteristic Ratio, Kuhn Model, Persistence, Random Walk Statistics, Gaussian Coils, Free Energy of Ideal Chains, Entropy Elasticity, Fractality of Polymers

3. Real Chains
Interaction Potentials, Mayer f-Function, Excluded Volume, Types of Solvents, Theta State, Conformation of Real Chains, Flory Theory, Blob Model, Rouse and Zimm Dynamics

4. Thermodynamics of Polymer Systems
Lattice Model, Flory–Huggins Theory, Chi Parameter, Solubility Parameters, Phase Behavior of Polymer–Solvent and Polymer–Polymer Systems, Osmotic Pressure

 

Dates and Lessons

 

Oct.    20, 2021:    Introduction

Oct.    27, 2021:    Ideal Chains

Nov.    03, 2021:    Entropy Elasticity

Nov.    10, 2021:    Real Chains

Nov.    17, 2021:   Flory Exponent

Nov.    24, 2021:   Chain Dynamics

Dec.   01, 2021:   Flory–Huggins Theory

Dec..  08, 2021:   Phase Diagrams

Dec.   15, 2021:   Osmotic Pressure

 

09.032.650 Exercise: Introduction to Macromolecular Chemistry (Part 1 + 2)

 

Dates and Excercise Topics

 

Nov.   02, 2021:     Ideal Chains

Nov.   16, 2021:    Entropy Elasticity

Nov.   30, 2021:    Excluded Volume

Dec.   14, 2021:    Flory Theory

Jan.   11, 2022:    Polymer Thermodynamics

 

Results of the Exam written on July 30, 2021

PC Part

Klausureinsicht am 05.08., 13:00 – 14:30, im Innenhof Chemie vor Eingang PC.  Alternativ erst nach dem 30.08.!

Bitte erwägen Sie in Anbetracht des Infektionsschutzes nur dann eine Klausureinsicht, falls Ihnen dies unbedingt erforderlich erscheint!

Bei Interesse bitte eine email an Dr. Wolfgang Schärtl.

Bei 5 Interessenten oder weniger findet die Klausureinsicht evtl. auch per Videokonferenz mittels teams statt, Sie erhalten vorab einen scan Ihrer Klausur und der Musterlösung.

Update der Ergebnisse nach der Einsicht vom 05.08., Änderungen fett-gedruckt

 

points total percent marks code
47,5 89,0 1,0 19
43,5 87,0 1,0 8
43,0 86,0 1,0 13
42,5 85,0 1,3 14
42,0 84,0 1,3 12
40,0 80,0 1,7 7
39,5 79,0 1,7 16
37,5 75,0 2,0 20
36,5 73,0 2,3 6
35,0 70,0 2,3 2
35,0 70,0 2,3 9
34,5 69,0 2,7 5
36,5 69,0 2,7 10
33,0 66,0 2,7 4
32,5 65,0 3,0 17
32,0 64,0 3,0 11
30,0 60,0 3,3 1
28,5 57,0 3,7 18
25,0 50,0 4,0 3
11,0 22,0 5,0 15

 

Note: these marks are an informal feedback only.

Marks are calculated according to:

100%86%: 1,0 ; 86%82%: 1,3

82%78%: 1,7 ; 78%74%: 2,0 ; 74%70%: 2,3

70%66%: 2,7 ; 66%62%: 3,0 ; 62%58%: 3,3

58%54%: 3,7 ; 54%50%: 4,0

< 50%: 5,0