Effect of Fluorinated Surface-Modifying Macromolecules on the Molecular Surface Structure of a Polyether Poly(urethane urea)
Bibliographic record
Abstract
Fluorinated surface-modifying macromolecules (SMMs) have been developed to preferentially migrate to the surface of poly(urethane urea)s (PEUs), thereby modifying the surface features of the polymer. In the current study, four specific SMMs based on different chemistries were synthesized and incorporated at a 4 wt % concentration in the PEU. The domain structure at the surface was altered, and the nature of the interactions between the SMM and the base polymer was dependent on the defined SMM chemistry. The surface features were characterized by several microscopy techniques. Attenuated total reflectance infrared spectroscopy showed that, in blending with the PEU, some SMMs disrupted the existing hydrogen-bonded hard segment domain structure at the surface. However, this was not a necessity for good dispersion into the base polymer, as one SMM demonstrated good mixing within the PEU, forming SMM−PEU interactions while simultaneously maintaining the hydrogen bonding within the PEU hard segment domains. These studies demonstrate the importance of understanding both the physical and chemical aspects of the defined fluorinated SMM−PEU interactions in order to comprehend their specific surface characteristics.
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How this classification was reachedexpand
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) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".