Block Copolymer Synthesis by a Miniemulsion Stable Free Radical Polymerization Process
Why this work is in the frame
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Bibliographic record
Abstract
The ultimate success of living-radical polymerizations will depend on whether they can be used to make materials with unique properties in an economical and acceptable manufacturing process. We report a major step in this direction for the SFRP process by demonstrating that a miniemulsion process can be used to polymerize monomers to high conversion with a high degree of livingness and that this process can be used to synthesize block copolymers. The key to the polymerizations is the use of a nitroxide-terminated oligomer to initiate the miniemulsions. Miniemulsions are performed at 135 °C to greater than 99% conversion to give polystyrenes with polydispersities between 1.15 and 1.25. Chain extension studies show these materials to have a high degree of livingness. Reaction of these polystyrene latexes with n -butyl acrylate lead to the first block copolymers completely made under SFRP miniemulsion conditions.
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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) | 0.003 | 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