Improved thermal stability of perfluoropolyalkylethers (PFPAEs)
Why this work is in the frame
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Bibliographic record
Abstract
Abstract End‐group modification of poly(hexafluoropropylene oxide), a perfluoropolyalkylether (PFPAE) shows a dramatic increase in thermal stability under conditions designed to mimic a severe tribological environment. The end‐group modifications in this study include perfluoroethyl (ethyl‐F, EA‐F), n ‐perfluoropropyl ( n ‐propyl‐F, NPA‐F), isoperfluoropropyl (isopropyl‐F, IPA‐F) and n ‐perfluorohexyl ( n ‐hexyl‐F, NHA‐F). Amorphous aluminum fluoride (AlF 3 ) was charged with a monodispersion of a modified PFPAE and was evaluated for thermal stability (200–270 +/− 1°C). The percent degradation of each type of end‐group has been measured by gas chromatography/mass spectrometry, and the mechanisms of decomposition have been reported. Copyright © 2007 John Wiley & Sons, Ltd.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it