Abstract
Special polymers have been used in the manufacture of storage structures and pipelines avoiding corrosive processes during ethanol fuel transport/storage. Therefore, this work investigated comparatively the effects of the ethanol on the physical-mechanical properties of poly (ether ether ketone) (PEEK) and polyamide 11 (PA-11) based on ageing tests. The WAXD and DSC results demonstrated slight reductions on the crystallinity degree of the aged PEEK, contrariwise to what happened with PA-11, where Xcincreased after ageing. However, the results of thermal, thermomechanical and mechanical analysis (TGA, DMTA, tensile and micro-IITs) demonstrated that PEEK is stable and no significant changes were observed in its elastic modulus (Ey≈ 3.4 GPa, E’ andEit≈ 3.7 GPa) or glass transition temperature. PA-11, conversely, was sensitive to ethanol fuel and expressive changes of its physical-mechanical properties were verified. For both materials, a reasonable correlation between crystallinity and mechanical properties was established.
Highlights
IntroductionAs an alternative for fossil fuels in several applications
Biofuels have emerged, as an alternative for fossil fuels in several applications
The curves of dynamic storage modulus for the unaged PEEK and polyamide 11 (PA-11) are shown in Figures 1 and 2, respectively
Summary
As an alternative for fossil fuels in several applications. In this context, the ethanol fuel transportation as well as its storage in tanks for marketing purposes, requires structures based on materials chemically compatible with the stored substance. All are frequently made of carbon steel alloys, which usually need to be coated to avoid corrosion and oxidation problems[3,4,5]. Recent studies have reported that the worldwide existing infrastructure is not fully adequate to alternative fuels as ethanol or biodiesels[4,7]. The corrosive effects of alternative fuels are not well known for this existing transport and storage structures[4]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
