Layered and Cellular Morphologies in Atactic/Syndiotactic Polystyrene Blends
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
This paper demonstrates for the first time that by blending a polymer with its isomer and subsequently conditioning the mixture with CO 2 gas a layered and cellular morphology can be obtained. Previous reports in the literature on generating layered and cellular morphologies use a stacking method forcing layers of polymers together followed by foaming the material. In this study we present single-phase blends of atactic polystyrene (PS) with its isomer syndiotactic polystyrene (sPS) and their fluid phase behavior with CO 2 . Equilibrium solubility and diffusion coefficients of the gas in the PS/sPS blends in the ratios 75/25, 50/50 and 25/75 wt% was determined at 0 and 35 °C; and the role of CO 2 solubility on the types of morphologies generated was investigated. With a decrease in temperature and hence an increase in gas solubility as well as changes in blend composition, foams with various morphological characteristics were obtained. In particular the 50/50 wt% PS/sPS blend conditioned with CO 2 at 0 °C and 3.4 MPa resulted in an intriguing morphology with alternating layers containing small and large cells within a given layer respectively.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 |
| 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