Chain Conformation of Adsorbed Ethylene Random Copolymers
Bibliographic record
Abstract
The structures formed by the adsorption of poly(ethylene- co -acrylic acid) (PEA), poly(ethylene- co -vinyl alcohol) (EVOH), poly(ethylene- co -vinyl acetate) (EVA), and polyethylene (PE) on metal oxide powders were characterized by solid-state NMR spectroscopy and FTIR-PAS. The effect of the copolymer loading and the polar group density on the chain conformation and mobility were examined. In the case of the strongest polar group−substrate interactions, the chain conformation is determined by the sticker group density rather than the coverage until all the binding sites have been occupied. As the binding strength decreases, this trend diminishes, and there is a corresponding increase in the chain order as reflected by the 13 C chemical shifts of the ethylene segments. The chain conformation of the most weakly bound copolymer (EVA on alumina) shows no dependence on either the sticker group content or the coverage, similar to the homopolymer, PE. Some surface hydrolysis of EVA and of the residual ester groups of EVOH is also detected.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.001 | 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".