Correlation Between Reactive Modification Conditions and Degree of Long‐Chain Branching in Chemically Modified Linear Low Density Polyethylene Using Response Surface Experimental Design | Zendy

Golriz Mahdi | Zendy; Khonakdar Hossein Ali | Zendy; Morshedian Jalil | Zendy; Abedini Hossein | Zendy; Jafari Seyed Hassan | Zendy; Lederer Albena | Zendy; Wagenknecht Udo | Zendy

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Correlation Between Reactive Modification Conditions and Degree of Long‐Chain Branching in Chemically Modified Linear Low Density Polyethylene Using Response Surface Experimental Design

Author(s) -

Golriz Mahdi,

Khonakdar Hossein Ali,

Morshedian Jalil,

Abedini Hossein,

Jafari Seyed Hassan,

Lederer Albena,

Wagenknecht Udo

Publication year - 2014

Publication title -

macromolecular materials and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.913

H-Index - 96

eISSN - 1439-2054

pISSN - 1438-7492

DOI - 10.1002/mame.201300005

Subject(s) - branching (polymer chemistry) , materials science , polyethylene , degree (music) , response surface methodology , surface modification , peroxide , mixing (physics) , polymer chemistry , thermodynamics , biological system , chemical engineering , composite material , chromatography , organic chemistry , chemistry , physics , biology , quantum mechanics , acoustics , engineering

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.

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