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Effect of high molecular weight fraction in HDPE on its impact properties: An HTSEC study
Author(s) -
Dayal Umendra,
Mathur Ajit B.
Publication year - 1996
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19960222)59:8<1223::aid-app3>3.0.co;2-e
Subject(s) - high density polyethylene , fraction (chemistry) , materials science , mass fraction , polymer science , composite material , polymer chemistry , chemistry , polyethylene , organic chemistry
Three commercial injection‐molding‐grade HDPE samples were evaluated for their properties. It was found that their impact property determined in the laboratory does not bear a simple correlation with the actual performance. The HTSEC study, undertaken to evaluate these samples, revealed that they differ significantly in z ‐average and z + 1‐average molecular weights. This difference is attributed to the presence of a small amount of a very high molecular weight fraction and is responsible for the variation in the performance. © 1996 John Wiley & Sons, Inc.