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Record W1995480691 · doi:10.1021/ma001000m

Ionomer and Mesomorphic Behavior in a Tail-End, Ionic Mesogen-Containing, Comblike Copolymer Series

2001· article· en· W1995480691 on OpenAlex
Pascal Y. Vuillaume, Jean‐Claude Galin, C. Géraldine Bazuin

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueMacromolecules · 2001
Typearticle
Languageen
FieldMaterials Science
TopicBlock Copolymer Self-Assembly
Canadian institutionsUniversité Laval
Fundersnot available
KeywordsCopolymerMicrostructureIonomerHomologous seriesDifferential scanning calorimetryPolymer chemistryMaterials scienceIonic bondingMethacrylateGlass transitionPhase (matter)Chemical engineeringCrystallographyIonPolymerChemistryComposite materialThermodynamicsOrganic chemistry

Abstract

fetched live from OpenAlex

A series of homologous statistical polymethacrylate comb copolymers with tail-end 4-(dimethylamino)pyridinium ionic groups were synthesized by partial quaternization of high molar mass poly(12-bromododecyl methacrylate). The copolymers of lower ion content are found to be biphasic by differential scanning calorimetry, resembling classical ionomers, with a lower glass transition temperature ( T g ) that remains constant up to about 20 mol % ion content before increasing and a higher T g that increases monotonically with ion content. X-ray analysis indicates the presence of a soft phase with an invariant microstructure for all of the copolymers, whereas the hard-phase microstructure, considered to be a disordered partial bilayer in the ionic homopolymer, is characterized by an increasing long period with decreasing ion content. Models to reconcile the various data are proposed, which show how large amounts of nonionic units can be incorporated into the hard-phase microstructure, with the invariant soft-phase microstructure also rationalized. This copolymer series thus bridges ionomer and mesomorphic polysoap characteristics by the presence of two phases whose relative proportions vary with ion content, both of which possess their own (short-range) microstructure that determines the nature of their evolution with copolymer composition.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.011
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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.

Opus teacher head0.012
GPT teacher head0.239
Teacher spread0.227 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it