Synthesis of styrene‐<i>g</i>‐polyisoprene nanoparticles by emulsion polymerization and its effect on properties of polyisoprene composites
Why this work is in the frame
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Bibliographic record
Abstract
The graft copolymerization of styrene onto nanosized polyisoprene (PIP) was carried out by using cumene hydroperoxide and tetraethylene pentamine as redox initiators. The high conversion and high degree of grafting could be achieved when a small particle was used as the core polymer. The grafting efficiency and monomer conversion increased with increasing reaction temperature and monomer concentration. Transmission electron microscopy indicated that the small PIP nanoparticles were completely coated with polystyrene (PS) by grafting resulting in a core shell morphology of nanosized graft PIP. Nanosized PIP and nanosized PS‐g‐PIP could be used as compatibilizers for vulcanized rubber latex. The addition of nanosized PIP and PS‐g‐PIP strongly influenced the mechanical properties of the natural rubber (NR)‐based compound. Incorporation of nanosized PIP and PS‐g‐PIP resulted in an improvement of the resistance of the compounds to heat aging. Copyright © 2011 John Wiley & Sons, Ltd.
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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) | 0.001 | 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 it