Effect of Crystallinity on Polymer Chain Compression in Polyethylene Dynamically Loaded with In-Situ X-Ray Diffraction
Year: 2025
Type: article
Abstract: Polyethylene (PE) is a polymer widely used in commercial applications, where the properties of PE can be altered based on the molecular conformation. In this study, shock compression experiments with in-situ x-ray diffraction were conducted on two conformations of PE– low density polyethylene (LDPE) and ultra-high molecular weight polyethylene (UHMWPE). Encouragingly, X-ray diffraction patterns were easily observed in LDPE, which is only 25% crystalline. In agreement with a previous study on HDPE, LDPE exhibited a phase transition at 7.7 GPa. Lower pressure experiments on UHMWPE and LDPE exhibited polymer chain compression, but no occurrence of a phase transition.
Institution: Los Alamos National Laboratory
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,090
Awards: G1017065088, G102163711, G107546177, G1119897673, G1279347439, G1313983767, G1527848044, G1664757510, G2287611682, G262962599, G3075337988, G3248584790, G3318903820, G498139845, WASHINGTON STATE UNIVERSITY PROJECT: DYNAMIC COMPRESSION OF MATERIALS (DCS); MULTISCALE MEASUREMENTS AND ANALYSIS
BASE MOD PROVIDES YEAR 1 INCREMENTAL FUNDING, G5681218985, G6410514744, G6563880843, G6848031779, G6918803902, G7370146660, G969889393, G993149817
OpenAlex ID: W4409261177