Wettability of Maleimide Copolymer Films: Effect of the Chain Length of <i>n</i>-Alkyl Side Groups on the Solid Surface Tension
Bibliographic record
Abstract
We report bulk and surface properties of maleimide copolymers with two different backbones, poly(propene- alt - N -( n -alkyl)maleimides) (PAlkMI) and poly(styrene- alt - N -( n -alkyl) maleimides) (SAlkMI), with different lengths of n -alkyl side chains (methyl, ethyl, propyl, butyl, pentyl, hexyl, octyl, and dodecyl). The contact angle and solid surface tension results suggest that, for the longer side chains, the surface properties are dominated by the side chains. Indeed, the surface tension of the two types of copolymers with length of the side chain above C = 6 are essentially equal, indicating complete shielding of the polar backbone chain. For the two copolymers containing dodecyl side chains, the solid surface tension is similar to that of solid surfaces consisting exclusively of CH 3 groups. Apparently, these side groups are long enough to allow arrangement in the configuration of the lowest surface free energy possible for alkyl chains. For the short side chain copolymers the styrene compounds are more hydrophobic than the propene compounds. The bulkier phenyl rings shields the polar backbone chain more effectively than the small alkyl groups.
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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) | 0.001 | 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".