Controlled Synthesis of Poly(acrylamide-<i>co</i>-sodium acrylate) Copolymer Hydrogel Microparticles in a Droplet Microfluidic Device for Enhanced Properties
Bibliographic record
Abstract
In this study, monodisperse poly(acrylamide- co -sodium acrylate) hydrogel microparticles with a controlled water absorbance capacity were synthesized in a droplet microfluidic device that can be used for enhanced oil recovery applications. The experimental method and the microfluidic device were optimized to produce well-spaced monodisperse monomer droplets that were then polymerized by UV initiation in an oil reservoir. The monomer composition (acrylamide-to-sodium acrylate weight ratio) and the cross-linker concentration were tailored to increase the water absorbance capacity. The copolymer composition was evaluated and confirmed by FTIR spectroscopy measurements. The water absorbance capacity determined by swelling experiments agreed very well with that predicted by Flory–Huggins swelling theory, which relates swelling to the ionic content and the cross-linker concentration.
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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) | 0.000 | 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 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".