Authors Golriz, M. ; Khonakdar, H. A. ; Morshedian, J. ; Abedini, H. ; Jafari, S.H. ; Lederer, A. ; Wagenknecht, U.
Title Correlation between reactive modification conditions and degree of long-chain branching in chemically modified linear low density polyethylene using response surface experimental design
Date 01.02.2014
Number 37262
Abstract Changes induced in the molecular architecture of linear low-density polyethylene during early stages of peroxide modification in a microcompounder are monitored by means of size exclusion chromatography and dynamic shear oscillatory measurements as a function of peroxide concentration, mixing temperature and resident time. By the use of a response surface method and according to a box Behnken statistical design, various contour plots are constructed to establish correlations between the processing parameters and degree of long-chain branching. All investigated process parameters are shown to have a significant effect on the degree of long-chain branching, the order of significance being concentration·>·temperature·>·mixing time. The interactive effects of these factors are determined.
Publisher Macromolecular Materials and Engineering
Citation Macromolecular Materials and Engineering 299 (2014) 154-164
Tags lldpe long-chain branching peroxide modification response surface method

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