1. Home
  2. Materials
  3. Plastics and composites
  4. Polystyrene and styrene copolymers

  5. Implementation

Article | REF: AM3340 V1

Polystyrene and styrene copolymers

Authors: Philippe HEIM, Olivier de LINARÈS, Laure HYM

Publication date: July 10, 2002

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

Français

5. Implementation

5.1 Rheology

The viscosity of styrenic polymers at processing temperatures depends on their molecular structure, in particular on molecular weight and distribution, which are a function of polymerization conditions and, above all, of the plasticizer content used during polymerization. Viscosity decreases with decreasing molecular weight and increasing plasticizer content. It is easily measured by the melt-index, expressed in g/min at 200 C and measured in accordance with IS0 1133. The higher the melt-index, the more fluid the polymer.

Like most thermoplastics, styrenic polymers in the molten state exhibit non-Newtonian behavior and viscoelastic character (cf. [AM 3 620] and [AM 3 630] references [5]...

You do not have access to this resource.

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!

The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

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

Subscribe now!

Ongoing reading
Implementation
Outline