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FTIR and DSC study of HDPE structural changes and mechanical properties variation when exposed to weathering aging during canadian winter
Author(s) -
Pagès P.,
Carrasco F.,
Surina J.,
Colom X.
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(19960411)60:2<153::aid-app2>3.0.co;2-r
Subject(s) - crystallinity , high density polyethylene , fourier transform infrared spectroscopy , materials science , weathering , degradation (telecommunications) , polyethylene , composite material , chemical engineering , geology , engineering , telecommunications , geomorphology , computer science
The aging of high‐density polyethylene (HDPE) when exposed to drastic climatic conditions (Canadian winter, characterized by low temperature and abrupt temperature variations between the night and the day) was studied. The importance of degradation was determined by evaluating the microstructural changes in HDPE (i.e., oxidations, ramifications, and polymeric chain breaking) by means of FTIR spectrophotometry. The crystallinity variation in HDPE by FTIR and DSC was also studied. Both techniques led to coherent results: there was a loss of crystallinity due to weathering degradation. This crystallinity reduction produced a drastic decrease in impact energy. However, the other properties evaluated were not significantly affected. © 1996 John Wiley & Sons, Inc.