Shear-induced softening in fumed silica-reinforced silicone
Bibliographic record
Abstract
Fumed silica is widely used as a reinforcing filler and rheology modifier for polymer composites. Untreated, hydrophilic fumed silica formulated into silicone polymer typically leads to a stiff, brittle material due to strong association between the silica surface silanol and the siloxane backbone. However, this hydrophilic silica/silicone mixture can be sheared into a flowable material, with comparable rheological behaviour to a mixture of silicone polymer and a hydrophobically modified silica. In this work, we utilize various characterization techniques such as rheology, bound polymer test, and differential scanning calorimetry (DSC) to understand the mechanism by which agitation softens the hydrophilic silica/silicone mixture. The combined observations indicated the role of shear induced rearrangement of bound polymer bridging the silica particles to drive the rheological behaviour of this kinetically arrested system.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), 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".