Simulation of tubular low-density polyethylene

Gupta, Santosh K. ; Kumar, Anil ; Krishnamurthy, M. V. G. (1985) Simulation of tubular low-density polyethylene Polymer Engineering & Science, 25 (1). pp. 37-47. ISSN 0032-3888

Full text not available from this repository.

Official URL:

Related URL:


The simulation of tubular, high-pressure low-density polyethylene reactors is performed using a comprehensive kinetic scheme which includes branching reactions as well as reactions leading to vinyl and vinylidene group formation. The variation of the physical properties of the reaction mass with position has been accounted for. In addition to predicting the conversions of the monomer and initiator, the temperature, and the number-average molecular weight, this study enables the computation of the polydispersity index and the concentration of vinyl, vinylidene, and methyl groups as a function of position. These have important implications in terms of product properties. Detailed simulations have shown that the steady-state approximation can be used for obtaining the concentrations of the initiator and the polymer radicals. In addition, some simple closure conditions have been established. The effect of multiple intermediate feeds is also investigated and it is found that under certain operating conditions the reactor performance becomes inherently unstable.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons, Inc.
ID Code:14288
Deposited On:12 Nov 2010 08:21
Last Modified:02 Jun 2011 09:56

Repository Staff Only: item control page