Volumetric and Swelling Techniques for Studying the Permeation of Protective Gloves to Solvents
Why this work is in the frame
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Bibliographic record
Abstract
Standard test methods ASTM F 739 “Standard Test Method for Resistance of Protective Clothing Materials to Permeation by Liquids or Gases Under Conditions of Continuous Contact,” and F 1407 “Standard Test Method for Resistance of Chemical Protective Clothing Materials to Liquid Permeation-Permeation Cup Method,” are widely used to evaluate the chemical resistance of protective clothing materials. However, these techniques are not well adapted to solvents of low volatility. In this study, the chemical resistance of protective materials to solvents was investigated with volumetric and swelling techniques and compared with the standard permeation techniques. Swelling results were obtained by following the dynamic deformation of a piece of material immersed in the solvent in a specially designed cell. The volumetric technique evaluates precisely the amount of solvent that diffuses into the material over time. The polymeric membranes were neoprene, nitrile and butyl, and the solvents were acetone, cyclohexane, γ-butyrolactone, tetralin (1,2,3,4-tetrahydronaphthalene), nitrobenzene, N-methyl-2-pyrrolidinone and m-cresol. The advantages and limitations of these techniques for the evaluation of the breakthrough time and permeation rate will be discussed, especially with regard to their application to solvents of low volatility.
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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 | 0.000 | 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