![](/assets/images/picto-drapeau-france-3a76576a5d60a512053b4612ab58dae5.png)
5. Molar mass control
The relationships given in this section can be used to prepare a reaction mixture leading to a polymer with a given molar mass, and possibly to well-defined end groups. Obviously, unforeseen phenomena (secondary reactions, partial or total precipitation of the polymer) may lead to deviations from the values given by these relationships; however, they are valuable insofar as they enable an approximate composition of the reaction mixture to be determined and, consequently, limit the number of preliminary experiments.
5.1 General relationships and systems AA + BB or AB + AB
Consider a system made up of two types of monomer: molecules bearing f A groups A and molecules bearing f B ...
Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference
This article is included in
Plastics and composites
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Molar mass control
Also in our database
Tools
RheoPower (Software for detecting molecular weight distribution as a function of viscosity measurements. Modeling and simulation of distributions). TOMCOAT http://www.tomcoat.com
PolyEFF (Polymerization reaction simulator). EFFTech Engineering Software http://efftech.tripod.com
...
Directory
Laboratories – Design offices – Schools – Research centers (non-exhaustive list)
LSM (Macromolecular Synthesis Laboratory – Université Pierre et Marie Curie) http://www.umpc.fr
CRPP (Paul Pascal Research Center) http://www.crpp.u-bordeaux.fr
...
Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference