Preparation and Characterization of Biobased Polyamide 36,10 Elastomer and Its Foam
Bibliographic record
Abstract
ABSTRACT Biobased recyclable elastomers are interesting sustainable alternatives to existing fossil fuel‐based and/or non‐recyclable elastomers in diverse applications. Herein, a novel biobased thermoplastic elastomer, polyamide 36,10 (PA36,10), is synthesized by one‐pot condensation polymerization without the use of harmful chemicals or solvents. Its chemical structure and molecular weights are characterized using Fourier transform infrared spectroscopy, nuclear magnetic resonance, and gel permeation chromatography. The glass transition temperature and melting temperature of the PA36,10, determined from differential scanning calorimetry, are −4 and 95 °C, respectively. The tensile strength and elongation at break are 16.80 ± 0.18 MPa and 1636 ± 108%, with Shore A and Shore D hardnesses of 97 and 47, as well as relatively good resilience. PA36,10 is foamed by extrusion using a 3 wt.% common blowing agent, ammonium bicarbonate. The resulting foam shows a bulk density of 0.67 ± 0.16 g.cm−3, with a compressive yield strength of 5.61 ± 0.71 MPa. The new biobased recyclable PA36,10 may find various potential applications in the elastomers industry.
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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".