Amphiphilic Block–Random Copolymers: Mapping the Boundaries of Aqueous Self-Assembly
Bibliographic record
Abstract
The structure–property relationships of polystyrene- b -poly(styrene- r -(acrylic acid)) block–random copolymers in aqueous media have been investigated. A library of copolymers with varied degree of polymerization of the hydrophobic polystyrene block, varied mol % acrylic acid (AA) in the hydrophilic block, and varied volumetric block ratios was designed. Rather counterintuitively, it was discovered that PS- b -(PS- r -PAA) block–random copolymers containing relatively low amounts of AA in the hydrophilic block disperse much more readily than those containing higher amounts of AA, despite the decrease in the hydrophilic monomer content. Dispersible copolymers were examined in terms of their critical aggregation concentration, aggregation number, and particle size of aggregates in relation to their structure. A change in interblock interaction parameters is proposed for the differences in dispersion behavior between copolymers containing relatively low and high amounts of AA in the stabilizing block. The findings of this study will not only inform their use as stabilizers in emulsion polymerization but shed light on using highly hydrophobic block copolymers to make small aggregates of a tunable size.
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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".