A UV‐initiated reactive extrusion process for production of controlled‐rheology polypropylene
Bibliographic record
Abstract
Abstract A new reactive extrusion process for the production of controlled‐rheology polypropylene (CRPP) has been developed. Instead of the traditionally used peroxides, this process employs a photoinitiator and an ultraviolet (UV) lamp. Experiments have been carried out in a corotating intermeshing twin‐screw extruder in which after mixing of the photoinitiator with the polypropylene, the melt stream is irradiated for just several seconds over two open barrel sections. Benzophonene (BP) has been used as the initiator and the effects of initiator concentration, polymer flow rate, and reaction temperature have been studied. The CRPP produced have been characterized through rheological measurements, size exclusion chromatography, differential scanning calorimetry, and Fourier transform infrared spectroscopy. POLYM. ENG. SCI., 2011. © 2010 Society of Plastics Engineers.
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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 | 0.000 | 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) | 0.000 | 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".