Graphene Oxide as an Auxiliary <scp>UV</scp> Photoprotector for Polypropylene
Why this work is in the frame
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Bibliographic record
Abstract
ABSTRACT This work presents the preparation and characterization of polypropylene (PP)/graphene oxide (GO) nanocomposites by adding photostabilizing additives to obtain materials with enhanced resistance to photodegradation. The synthesized GO (modified Hummers' method) was characterized using state‐of‐the‐art techniques. The results indicated that a high oxidation index and a relatively low stacking of GO layers were achieved. The PP/GO nanocomposites and reference PP composition (without GO) with different additives (antioxidants, UV absorber, and hindered amine light stabilizer—HALS) were prepared by compression molding. The films were subjected to UV light in an artificial aging chamber for up to 4 weeks and were characterized through visual aspect analysis, FTIR, and Differential Scanning Calorimetry (DSC). The results showed that HALS provided the best protective effect against photodegradation among all analyzed compositions, while the addition of GO also retarded the photodegradation process of PP. Conversely, the UV absorber alone was ineffective in protecting against photodegradation. However, a synergistic effect among HALS, UV absorber, and GO was observed as the best alternative to hinder the PP photodegradation reactions.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 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 it