Effect of Pro Oxidant Agents on the Ageing of Polypropylene
Bibliographic record
Abstract
The aim of this work is to study the influence of pro oxidant agents on the natural ageing of polypropylene (PP). For that purpose, two formulations containing, respectively, 5 wt % of Ca stearate and Ca/Zn complex as pro oxidant agents were prepared and exposed during 18 months to exterior natural conditions of Mediterranean climate. For comparison, a control formulation based only on PP was prepared. Samples were taken off every three months and characterized. The evolution of mechanical properties was followed by tensile test and Shore D hardness while the chemical modifications were analysed by Fourier transform infrared spectroscopy (FTIR). The results showed that all the considered formulations were affected but those containing the pro oxidant agents were the most affected. Moreover, Ca stearate is more effective than Ca/Zn complex as pro oxidant agent.
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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 | 0.001 | 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".