Effect of Premade Compatibilizer and Reactive Polymers on Polystyrene Drop Deformation and Breakup in Simple Shear
Bibliographic record
Abstract
The deformation and breakup of a single polymer drop with compatibilizer (premade or in-situ) inside a polymer matrix was visualized at high temperature under simple shear in a specially designed transparent Couette mixer. The compatibilized systems were polyethylene/polystyrene (PE/PS) with polyethylene- block -polystyrene copolymer (P(E- b -S)) and polystyrene oxazoline (PSOX) with polyethylene maleic anhydride (PEMA). The uncompatibilized polymer systems studied were PE/PS and PE/PSOX. With or without compatibilizer, the drop elongated in the vorticity direction and then broke up in that direction. In the presence of premade or reactively formed compatibilizer, drop breakup occurs at a shear rate similar to that in the uncompatibilized systems, which suggests that copolymer does not affect initial polymer drop breakup greatly. Interfacial cross-linking in reactive systems stabilized the drop by forming a tiny cylindrical tip in the vorticity direction. Consequently, drop erosion and vorticity elongation and breakup occurred at a much higher shear rate compared to the nonreactive systems.
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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) | 0.000 | 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 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".