Plastics. Determination of the viscosity of polymers in dilute solution using capillary viscometers Thermoplastic polyester (TP) homopolymers and copolymers

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-03-2015

Publisher

British Standards Institution

National foreword
1 Scope
2 Normative references
3 Principle
4 Solvents
5 Apparatus
6 Solvent and solution
7 Procedure
8 Expression of results
9 Test report
Annex A (informative) - Round-robin testing

Defines a method for the determination of the viscosity number (also referred to as 'reduced viscosity') of dilute solutions of thermoplastic polyesters (TPs) in certain specified solvents.

This part of ISO1628 specifies a method for the determination of the viscosity number (also referred to as â€œreduced viscosityâ€??) of dilute solutions of thermoplastic polyesters (TPs) in certain specified solvents. The method is applicable to poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT), poly-(cyclohexylenedimethylene terephthalate) (PCT), and poly(ethylene naphthalate) (PEN), as well as to copolyesters and other polyesters, defined in ISO7792‑1 , that are soluble in one of the specified solvents under the specified conditions. The viscosity number is determined by the general procedure specified in ISO1628‑1 , observing the particular conditions specified in this part of ISO1628 . The determination of the viscosity number of a thermoplastic polyester provides a measure of the relative molecular mass of the polymer.

Committee	PRI/21
DevelopmentNote	Renumbers & supersedes BS ISO 1628-5. 2015 version incorporates corrigendum to BS ISO 1628-5. Also numbered as BS 2782-7.732E(1998). Supersedes BS 2782-7.732E(1991) and 95/125425 DC. (03/2015)
DocumentType	Standard
Pages	14
PublisherName	British Standards Institution
Status	Current
Supersedes	BS 2782-7 Method 732E:1991 BS ISO 1628-5 : 1998 95/125425 DC : OCT 95

Standards	Relationship
ISO 1628-5:1998	Identical
EN ISO 1628-5:2015	Identical

ISO 3451-2:1998	Plastics Determination of ash Part 2: Poly(alkylene terephthalate) materials
ISO 1628-1:2009	Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 1: General principles
ISO 7792-1:2012	Plastics Thermoplastic polyester (TP) moulding and extrusion materials Part 1: Designation system and basis for specifications
ISO 3105:1994	Glass capillary kinematic viscometers — Specifications and operating instructions

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BS EN ISO 1628-5:2015

Plastics. Determination of the viscosity of polymers in dilute solution using capillary viscometers Thermoplastic polyester (TP) homopolymers and copolymers

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

Category

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