Zn‐assisted cooperative effect for copolymers made by heterodinuclear Fe−Ni catalyst
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Bibliographic record
Abstract
Abstract Mononuclear Fe and Ni based catalysts (M 1 and M 2 ) in the form of single and dual catalytic systems were employed in the presence and absence of diethyl zinc (DEZ) for polymerization of ethylene. In addition, corresponding homo‐ (M 3 and M 4 ) and heterodinuclear catalysts (M 7 ) along with the mononuclear analogues (M 5 and M 6 ) were used to explore the effect of adjacency of second metal center on the chain transfer efficiency. DEZ had stronger influence on the behavior of mono‐ and dinuclear Fe‐based structures and corresponding thermal and microstructural properties of the PE samples than Ni complexes. A mechanism was proposed for M 5 as the vinyl‐terminated polymer chains increased in the presence of DEZ. More interestingly, M 7 not only showed a cooperative effect for production of a random copolymer containing short and long chain branches but also at low and high concentration of DEZ, a blocky copolymer was obtained through CCTP and CSP. These results were confirmed by 13 C NMR, DMTA, SSA and CEF.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.009 | 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