Colloidal Stability of Aqueous Dispersions of Block Ionomer Complexes: Effects of Temperature and Salt
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Bibliographic record
Abstract
This work characterized colloidal stability of the dispersions, formed by the complexes of poly(ethylene oxide)-b-poly(sodium methacrylate) and hexadecyltrimethylammonium bromide. At room temperature, the dispersion was stabilized by the poly(ethylene oxide) (PEO) chains and did not aggregate for at least several months. Elevation of temperature caused aggregation of the dispersion because of dehydration of the PEO chains. At initial stages (minutes), the aggregation was reversible and the particles spontaneously redispersed once the temperature was decreased. However, it became irreversible at the later stages (hours), probably indicating fusion of the hydrophobic cores of the BIC particles. Addition of elementary salts led to a decrease of the aggregation temperature. The effects of various salts were dependent on the chemical nature of the ions and were consistent with the Hofmeister series. This behavior was discussed in terms of hydration and London (dispersion) interactions between the ions and the PEO.
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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) | 0.000 | 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 it