Preparation and morphology study of carbon molecular sieve membrane derived from polyimide
Bibliographic record
Abstract
Abstract Carbon molecular sieve (CMS) membranes were prepared by pyrolysis of polyimide films at three different temperatures (600, 900, and 1100 °C). The physico‐chemical structure and morphology of the derived samples were characterized by a number of techniques. FTIR spectra and SEM/EDX revealed changes in surface chemistry and overall compositions. Raman spectroscopy indicated the co‐existence of ordered graphite and amorphous domains. TEM and XRD suggested that the samples possess a ‘turbostratic’ structure. With the increase of the pyrolytic temperature, the evolution of the microstructure was clearly evidenced. It was observed qualitatively in TEM images and reflected by the d‐spacing. The surface area, pore volume, and size distribution of micropores/small micropores were derived from the standard N2 and CO2 isotherms, respectively, and compared for their roles in determining mesopore, micropore, and small micropores. These surface characteristics were analyzed and compared with the gas adsorption/permeation properties.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 source (direct Gemma or distilled Codex), 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".