Living Free Radical Microemulsion Polymerization of Methyl Methacrylate
Why this work is in the frame
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Bibliographic record
Abstract
The microemulsion polymerization of MMA were carried out by using three different surfactants by adding the chain transfer agent 1-phenylethyl dithiobenzoate (PhC(S)SCH(CH 3)Ph). It was found the microemulsion polymerization of MMA had the characteristic of living radical polymerization without the co-surfactant. The polymers had molecular weight that were close to those predicted by the ratio of consumed monomer to added chain transfer agent, and they also displayed narrow molecular weight distribution (M w/M n1.3). The co-surfactants could improve the stability of the microemulsion throughout the polymerization, but they were the poisons of living radical polymerization at high conversion; the polydispersites turned wider, the real molecular weight are larger than the theoretical molecular weight greatly. The microemulsion polymerization of MMA was carried out under different temperature by using the ternary system water/CTAB/MMA. The results showed the temperature did not affect the stability of the microemulsion, but the polymerization rate increased as the temperature increased. The TEM was used to study the size of these latex particles, and the diameter of these latex particles was about 20～30 nm. The syndiotacticity of PMMA synthesized by microemulsion polymerization with chain transfer agent was higher than that of normal microemulsion polymerization.
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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) | 0.016 | 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