Physical Chemistry of Polymers 1

 

Lecture:   Wed., 12:15 - 13:45, HS C03
Exercise: Tue., 13:00 - 13:45, Seminar room 107

 

 

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 Summer Term 2020

 

Dear students,

...and suddenly, everything is different.  The pandemic of the SARS-CoV2 pathogen and its potentially severe disease COVID19 does not allow classical lecture courses to be held in the summer semester of 2020.  We very much regret that.  Thus far, the lecture Physical Chemistry of Polymers has been characterized by a lively, interactive format in the lecture hall.  During normal semester operation, this would occur in the form of 10 lecture-hall lessons on 10 topics, one per week.  At the bottom of this page, you may find a timetable with dates showing when which of these teaching units would normally be on the schedule.  In the summer semester 2020, however, we all have to keep distance from each other.  The lecture will therefore be moved from the lecture hall to your own apartment.  For this purpose, short scripts for each topic section of the lecture will be made available to you as working material in the "Scripts" section of this website.  In addition, audio-podcasts are made available to you for streaming on this website.  You can listen to them at home, supported by the scripts, and thus consume the lecture contents conveniently from your privat 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.

Accompanying to the lecture, there will also be an exercise in digital format.  You can download exercise sheets in the "Scripts" section of this website and solve them at home.  Please make your solutions by hand, scan them or take a photo of them, and send this to Ms. M.Sc. Martha Koziol (mkozio01[a]uni-mainz.de).  You will then receive personal feedback from her.  Please note that participation in this exercise is voluntary and has no consequences for the completion of the module.  However, active participation is strongly recommended, as it turned out in the past that this leads to significantly more efficient learning for the exam in the end…and that the exam is then also passed with significantly better results.

Your teachers,
Prof. Dr. Sebastian Seiffert
M.Sc. Martha Koziol

 

Audiostreams

 

For listening, you may either use the simple player implemented on this website, or alternatively, a better and more versatile player that you can access by simply clicking on the titles of the audios.  (Another remark: for a trouble-free hearing please don`t use Firefox as your browser.)

 

1. Introduction (audio)


2. Ideal Chains
(audio)


3. Entropy Elasticity
(audio)


4. Real Chains
(audio)


5. Flory Theory
(audio)


6. Chain Dynamics
(audio)


7. Flory–Huggins Theory
(audio)


8. Phase Diagrams
(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

5. Polymer Analytics (bonus content in winter term)
Molecular Weight Distributions and Characteristic Averages, Osmometry to Determine Mw and A2, Static and Dynamic Light Scattering: Zimm-Plot, Stokes–Einstein Equation, and Rho Ratio, Viscometry: Kuhn–Mark–Houwink–Sakurada Equation

 

Dates and Lessons

 

Apr.   15, 2020:    Introduction

Apr.   22, 2020:    Ideal Chains

Apr.   29, 2020:    Entropy Elasticity

May   06, 2020:   Real Chains

May   13, 2020:   Flory Exponent

May   20, 2020:   Chain Dynamics

May   27, 2020:   Flory–Huggins Theory

Jun.  10, 2020:   Phase Diagrams

Jun.  17, 2020:   Osmotic Pressure

Jun.  24, 2020:   Practicing Exam

Jul.   16, 2020:   Written Exam (both OC and PC Part of the Macro-Class)

 

 

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

 

Dates and Excercise Topics

 

Apr.  28, 2020:     Ideal Chains

May  12, 2020:    Entropy Elasticity

May  26, 2020:    Excluded Volume

Jun. 06, 2020:    Flory Theory

Jun. 23, 2020:    Polymer Thermodynamics

 

Results of the Exam written on February 06, 2020

 

If you want to check your exam PC part, contact W.Schärtl via email for an appointment in his office before 28th of February 2020


PC Part

Points total Percent Mark Exam ID No.
35,5 73,0 2,3 01
39,5 79,0 1,7 02
42,0 84,0 1,3 03
43,5 87,0 1,0 04
35,5 71,0 2,3 05
35,5 71,0 2,3 06
41,0 82,0 1,3 07
44,5 89,0 1,0 08
43,0 86,0 1,0 09
45,0 90,0 1,0 10
35,5 71,0 2,3 11
37,0 74,0 2,0 12
28,0 56,0 3,7 13
33,5 67,0 2,7 14

 

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