Soluble Telechelic Polycondensation Poly(ether ketones): Synthesis and Characterization
Why this work is in the frame
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Bibliographic record
Abstract
Abstract The present article reports the synthesis of soluble, propyl‐substituted aromatic ring telechelic polycondensation blocks having molecular weights ranging from 1800 to 6500 g mol −1 and polymolecularities of 1.3 to 1.7. Chain‐growth polycondensation is performed, and the initiator is selected through reactivity studies, using 19 F nuclear magnetic resonance (NMR) measurements. Gel permeation chromatography, NMR spectroscopy, and matrix‐assisted laser desorption/ionization time of flight mass spectrometry show that blocks are terminated by a methoxy group at one end and a fluorine atom at the other. Polymers are crystalline as synthesized, as shown by X‐ray diffraction and differential scanning calorimetry, do not recrystallize once melted, and undergo solvent‐induced crystallization. Crystalline peak positions and relative intensities are different from those observed for other poly(ether ketones). The difference in crystal form is proposed to stem from packing disruption related to the presence of propyl substituents. Thermogravimetry shows a good thermal resistance up to 450 °C.
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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 | 0.000 | 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) | 0.001 | 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