Probing the Influence of Polymer Architecture on Liquid−Liquid Phase Transitions of Aqueous Poly(<i>N,N</i>-dimethylacrylamide) Copolymer Solutions
Bibliographic record
Abstract
Thermosensitive poly( N,N -dimethylacrylamide- co - N -phenylacrylamide) (DMA- co -PhAm) copolymers were prepared by atom transfer radical polymerization (ATRP) in methanol/water mixtures at room temperature with methyl 2-chloropropionate as the initiator and CuCl/Me 6 TREN as the catalyst. The resultant DMA- co -PhAm copolymers had tailored compositions and controlled molecular weights, and their aqueous solutions underwent liquid−liquid phase separation upon heating. These phase transition temperatures, measured by the cloud point method, were dependent on polymer concentrations, compositions, and molecular weights. The efficiency of the thermally induced liquid−liquid phase transition, i.e., the yield of phase-separated polymer, increased with increasing solution temperature, suggesting this thermally induced liquid−liquid phase transition to be a continuous equilibrium process. The efficiency of phase separation could be enhanced by adding NaCl to the solution.
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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".