Effect of Restricted Phase Segregation and Resultant Nanostructural Heterogeneity on Glass Transition of Nonuniform Acrylic Random Copolymers
Bibliographic record
Abstract
The glass transition behavior of emulsion polymerized butyl acrylate (BA)−methyl methacrylate (MMA) copolymers was related to their microstructural features. Broad transition regions composed of two distinct peaks were observed in both DMA and DSC measurements of copolymers with various comonomer compositions indicating dynamic and microstructural heterogeneity. This was further investigated using 2D WISE experiment. Nanophase segregation within the copolymers was inferred from detailed analysis of their local dynamic behavior. The length scale of segregation was calculated to be 7.4 nm by 13 C NMR spin diffusion experiment. A modeling procedure was also developed to extract the distribution of comonomers compositions within the samples from heat flow first-derivative data. Bimodal comonomer composition distributions were extracted in accordance with their glass transition behavior.
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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".