Parameters controlling the swelling of butyl rubber by solvents
Bibliographic record
Abstract
Abstract The method used in the past 30 years for describing the swelling of polymers by solvents is mainly based on the Hansen three‐dimensional solubility parameters. However, the subjectivity of its implementation as well as its limited success for several polymers, and in particular elastomers, which constitute choice materials for protective gloves, has been reported by several authors. In this article, data obtained by Zellers et al. with butyl rubber and a list of 53 solvents are analyzed to identify the parameters controlling the swelling of this elastomer. The absence of a global effect of the Hansen affinity, solvent molar volume and saturation vapor pressure, and Flory–Huggins interaction parameter has been confirmed. It was also shown that one of the main factors controlling the swelling of butyl rubber appears to be the chemical class of the solvents. Within these classes, a linear relationship between butyl rubber swelling and solvent saturation vapor pressure was observed, and the correlation with molar volume is almost as good. On the other side, no correlation can be obtained with the Hansen affinity. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
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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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| 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 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".