𝔖 Bobbio Scriptorium
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Relation between intrinsic viscosity and molecular weight

✍ Scribed by H. M. Quackenbos

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
331 KB
Volume
25
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

The connection between intrinsic viscosity and number‐average and weight‐average molecular weight has been revealed by calculations from distribution curves. Log‐normal distributions, and moderate variations thereon, were chosen as typical for polystyrene and other thermoplastics. Intrinsic viscosity and number‐average molecular weight are unlikely to be related because of the highly disturbing effect of small variations in molecular weight distribution. Conversely, intrinsic viscosity is a good practical measure of weight‐average molecular weight up to a ratio of 10 for weight‐to‐number average.

📜 SIMILAR VOLUMES

Estimation of molecular weight averages
Estimation of molecular weight averages from intrinsic viscosity
✍ K. K. Chee 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 271 KB 👁 2 views

## Abstract The weight‐average molecular weight is estimated by an extrapolation technique based on a linear relation between the viscosity‐average molecular weight __M__~__v__~ and a Mark–Houwink–Sakurada constant. This method may also be used to assess the unperturbed dimensions of polymers. If t