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Estimating Slow Crack Growth Performance of Polyethylene Resins from Primary Structures such as Molecular Weight and Short Chain Branching
Author(s) -
DesLauriers Paul J.,
Rohlfing David C.
Publication year - 2009
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200950814
Subject(s) - branching (polymer chemistry) , polyethylene , materials science , ultimate tensile strength , composite material , polymer , molar mass distribution , polymer chemistry , chemical engineering , engineering
Summary: Molecular weight and short chain branching (SCB) data experimentally obtained by SEC‐FTIR are combined into a single, primary structural parameter ( PSP2 ) and used to rapidly screen the slow crack growth resistance of a variety of polyethylene resins. Our results show that PSP2 values obtained for resins made using different catalysts (both dual and single catalyst systems) and hence, different polymer architectures, correlate well with results obtained from several short‐term tensile tests. The development of PSP2 , as well as the qualitative and quantitative predictive ability of this parameter are presented and discussed.