✦ LIBER ✦

The fundamental importance of phase measurement during crosslinking and polymerization processes in polymers

✍ Scribed by J. Unsworth; J. Sendt

Publisher: Elsevier Science
Year: 1982
Tongue: English
Weight: 233 KB
Volume: 18
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(82)90039-8

No coin nor oath required. For personal study only.

✦ Synopsis

Abstntet--Shear modulus G* and loss angle ~ have been monitored continuously throughout vulcanisation of several elastomeric compounds with a new Rheometer [1]. It has been possible to calculate storage modulus G' and loss modulus G" for each value of G* and 6. As expected theoretically, G' is a more accurate representation of the degree of crosslink formation X than G*, which only approximately represents X when 6 ---* 0 °. To be able to determine whether this is the case and to be able to measure G'. the phase must be monitored. The determination of G" also allows any polymerization reactions to be followed.

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