Application of a New pH-metric Method to the Kinetic Study of Copolymerization of Polysaccharides Fucan N1 with PMMA in Presence of Cerium Ce+4
Bibliographic record
Abstract
The copolymerization of a Poly-Acrylic PMMA with polysaccharide, Fucan N1 and Dextran T70,in presence ofa ceric salt used as initiator in acidic medium,was carried out under the following conditions: Fucan N1=0,5 g;[CAN] = 3,6.10?3M , [HNO ] 0,2M 3 = ; temperature =40°C with a relative ratio between the initiator and themonomer, initiator/monomer =1/10. Besides a pH study of the reaction medium, an infrared spectroscopy (IR)proved the appropriatness of these best conditions of synthesis, and this by showing the presence of acharacteristic peak of the carbonyl grouping situated at 1733cm-1 for the copolymer Fucan PMMA in respect tothe individual PMMA spectra and Fucan N1. In addition, a 13C NMR study has been conducted on thecopolymer.A viscosimetry study of two Fucan fractions was performed in aqueous medium (H20), and also of the obtainedcopolymer in DMSO.An outcome of this work allows for us the suggestion of a plausible reaction mechanism, of which thecopolymerization rate -Rp- is first order dependant to the monomer concentration, and to the square–concentration of both the initiator and the polysaccharide.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".