The chemical impact of oil fluids in the morphology and thermal properties of the polyamide 11 used in flexible lines

• DOI: 10.1007/s44245-024-00032-z
• Publication Date: 2024-01-29T14:02:45Z
• Authors: Frederico G. A. Dias; Amanda G. Veiga; Antônio Pedro A. ...; Maria Luiza M. Rocco; Marysilvia F. da ...
• Keywords: Morphology

Abstract As the polyamide 11 (PA11) present in flexible pipes for oil prospection is used, it also reacts with fluid components so that not only morphology of polymer changes but its properties. To see extent these chemical modifications and how they changed original material, different techniques were employed, such as ATR-FTIR, DSC, TGA, Melt-flow index (MFI), while sample was cut half to measure if direct contact had a huge influence. The results indicate degree PA11 part higher, translated into appearance molecules FTIR spectra (such ethers, carbonates, alkenes). These consistent higher degradation this half, leading region crystallinity, which impacted overall thermal properties polymer.