Preparation and control release properties of chitosan electrostatic assembly with polyanion bearing phosphorylcholine groups
Why this work is in the frame
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Bibliographic record
Abstract
Novel polyelectrolyte hydrogels were prepared by polycation chitosan(CS)and polyanionic poly(2-methacryloyloxyethyl phosphorylcholine-co-methacrylic acid)(poly(MPC-co-MA),PMA30).The PMA30(the actual percentages of MPC unit in PMA30 determined by 1 H-NMR was 28%)was synthesized by free radical polymerization of 2-methacryloyloxyethyl phosphorylcholine(MPC)and methacrylic acid(MA).Fourier transform infrared spectra(FT-IR)and scanning electron microscopy(SEM)confirmed that the formation of the polyelectrolyte hydrogels was attributed to the strong electrostatic interaction between cationic groups in CS and anionic groups in PMA30.Potential applications of the hydrogels matrices in controlled drug delivery were also examined.In vitro release showed that neutral red release could be controlled by choosing the composition and pH.This facile method of fabricating CS/PMA30 hydrogels bearing phosphorylcholine groups may have potential applications in the fields of drug delivery,tissue engineering,and cell culture.
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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