In situ near-infrared spectroscopic studies of the structural changes in polyethylene during tensile deformation
| Autor: | Koh-hei Nitta, Takanobu Kawamura, Kenji Takahashi, Masami Mizushima |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Quantitative Biology::Biomolecules
Materials science Yield (engineering) Polymers and Plastics Organic Chemistry Crystal structure Polyethylene Condensed Matter::Soft Condensed Matter Condensed Matter::Materials Science chemistry.chemical_compound chemistry Ultimate tensile strength Lamellar structure sense organs Slippage Composite material Deformation (engineering) Spectroscopy |
| Zdroj: | Polymer Testing. 38:81-86 |
| ISSN: | 0142-9418 |
| DOI: | 10.1016/j.polymertesting.2014.07.002 |
| Popis: | Structural and conformational changes occurring during tensile stretching of high-density, linear low-density, and low-density polyethylene materials were investigated with in-situ near-infrared (NIR) spectroscopy. Fragmentation releases the chain ends within crystalline lamellae and the cilia chains that are embedded in crystalline lamellae, and enables changes from the trans to gauche conformation. Meanwhile, the inclusion of co-monomers in the crystal lattice of linear low-density polyethylene causes the lamellar cluster to soften and stretch. Plastic deformation such as chain unfolding and slippage occurs within lamellar clusters. |
| Databáze: | OpenAIRE |
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