On the molecular weight dependence of slip velocity of polymer melts
Bibliographic record
Abstract
Theoretical models regarding the slip of polymer melts are compared with the experimental results of several researchers on the basis of the molecular weight (Mw) dependence of the slip velocity (Vs). Using simple assumptions, it is shown that agreement between theory and experiment can only be achieved if the models are adjusted to address the random adsorption density of polymer chains on high energy surfaces and the stiffness of the adsorbed chains as assessed by the molecular weight of entanglements. With respect to adsorption density, the transition from the mushroom to the overlap regime results in the development of interactions between adsorbed chain segments which changes the Vs-Mw scaling. As these interactions involve mutual entanglements, their development is hindered by the stiffness of the adsorbed chains. Accordingly, a novel regime within the overlap regime is proposed to exist, observed when the segments of the adsorbed chains are not flexible enough to interact with the neighboring chains.
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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 | 0.001 |
| 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 | 0.001 | 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".