Chelate Bonding Mechanism in a Novel Magnesium Phosphate Bone Cement
Bibliographic record
Abstract
A novel approach to harden magnesium phosphate cements was tested using phytic acid (C 6 H 18 O 24 P 6 ) solutions as chelation agent. In addition to complex formation, a cementitious dissolution and precipitation reaction led to the formation of newberyite (Mg HPO 4 ·3H 2 O) as the hydrated form of the farringtonite [Mg 3 ( PO 4 ) 2 ] raw powder. The set cements showed good mechanical properties (up to 65 MPa in compression) displaying a doubling of the compressive strength of conventional newberyite forming cements despite of a significantly lower degree of cement conversion. An increasing phytic acid concentration from 10% to 30% had a retarding effect on the setting time (11–16 min), decreased the pH close to acidic conditions ( pH = 5–4) and increased the maximum setting temperature (26°C–31°C), but none of these factors reached critical values. The presented strategy was successful in fabricating a good workable, novel mineral biocement with promising characteristics for biomedical applications.
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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 | 0.000 |
| 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 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".