𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Chemical Composition Distribution of Multicomponent Copolymers

✍ Scribed by Siripon Anantawaraskul; João B. P. Soares; Paula M. Wood-Adams


Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
203 KB
Volume
12
Category
Article
ISSN
1022-1344

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

The number and weight chemical composition distributions in random terpolymers were derived using a statistical approach. The solution was then generalized to comprise higher multicomponent copolymers. The analytical solution was verified with Monte Carlo simulations and by considering limiting cases. Chemical composition distributions for fractions of random terpolymers of various kinetic chain lengths were also investigated. In a similar way to the results for binary copolymers described by Stockmayer's distribution, broadening of the distribution is observed for low‐molecular‐weight chains.

Comparison of chemical composition distributions from Stockmayer (Equation (3)) and statistical approach (Equation (4)).

imageComparison of chemical composition distributions from Stockmayer (Equation (3)) and statistical approach (Equation (4)).


📜 SIMILAR VOLUMES


Free-radical multicomponent polymerizati
✍ Engelmann, Uwe ;Schmidt-Naake, Gudrun 📂 Article 📅 1993 🏛 Wiley (John Wiley & Sons) ⚖ 758 KB

## Abstract Formulae to calculate the statistically caused instantaneous copolymer composition distribution as well as the chemical distribution of accumulated macromolecules, which is due to polymerization statistics and shifts in mean polymer composition during the reaction process, are derived o

Multivariate Composition Distribution in
✍ Hidetaka Tobita 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 166 KB

## Abstract Statistical multicomponent polymerization is a typical example of a Markovian process for which the generating function approach can be applied. Up to the present, generating functions have been used mainly to obtain analytical solutions. However, recent advances of computer software ca

Multivariate Composition Distribution in
✍ Hidetaka Tobita 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 166 KB

## Abstract A shortcut approximate method is proposed for determining the multivariate composition distribution. It is found that the multivariate normal distribution can represent the major body of composition distribution for long chains reasonably well. The covariance of the multivariate composi

Analysing the Chemical Composition Distr
✍ Andreas Albrecht; Robert Brüll; Tibor Macko; Pritish Sinha; Harald Pasch 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 345 KB

## Abstract HT‐HPLC is an attractive technique to analyse CCD of olefin copolymers and offers the possibility to shorten analysis times compared to fractionation techniques based on crystallisation. We have found that HT‐HPLC enables the selective elution of EMA and EBA copolymers according to thei