Interfacial Films Adsorbed from Bitumen in Toluene Solution at a Toluene−Water Interface: A Langmuir and Langmuir−Blodgett Film Approach
Bibliographic record
Abstract
Using Langmuir and Langmuir−Blodgett (LB) film techniques, the present study shows that interfacial film formation is due to the adsorption of bituminous compounds at a toluene−water interface. Langmuir films formed using various concentrations of the bituminous compounds below their critical micelle concentration or critical nanoaggregate concentration in the toluene phase indicate that asphaltenes, a constituent of bitumen, irreversibly adsorb at the toluene−water interface. Based on Langmuir and LB film studies, the pressure−area isotherms as well as the morphology, thickness, and the hydrophobicity of the interfacial films are similar when bitumen and asphaltenes were independently used as the source for the surface active materials present in the bulk organic phase. Morphology and thickness studies on the corresponding LB films suggest the formation of discoid nanoaggregates with a definite size at the interface.
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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) | 0.001 | 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 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".