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Polymerizations in Supercritical Carbon Dioxide

2023· other· en· W4389134368 on OpenAlex

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

VenueEncyclopedia of Polymer Science and Technology · 2023
Typeother
Languageen
FieldChemical Engineering
TopicCarbon dioxide utilization in catalysis
Canadian institutionsUniversity of Waterloo
Fundersnot available
KeywordsPolymerizationSupercritical fluidSupercritical carbon dioxidePolymerCarbon dioxideEnvironmental sciencePolymer scienceMaterials scienceNanotechnologyChemistryChemical engineeringOrganic chemistryEngineering

Abstract

fetched live from OpenAlex

Abstract The science and engineering of polymerizations carried out in supercritical carbon dioxide (scCO 2 ) have been studied abundantly in the literature in the last three decades. There are several very good and recent reviews on the topic available in the literature. This article is based on a related contribution by Jones and DeSimone published in this encyclopedia, which emphasized the polymer chemistry background of this topic. The material is updated and enriched from a polymer reaction engineering perspective. The commercial feasibility of polymerization processes carried out in scCO 2 was proven early by DuPont, which built a commercial plant for production of fluoropolymers in Fayetteville, North Carolina, USA. Unfortunately, the commercial development of new polymerization processes in scCO 2 slowed down due to environmental and pollution issues associated to some chemicals used in the production of fluoropolymers. However, many new materials and polymerization variants in scCO 2 keep on resurfacing. The science and technology of polymerization processes carried out in scCO 2 and novel materials produced therein has reached a relatively mature state and the development of commercial processes for production of some of these materials is certainly feasible in the near future.

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)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Other · Consensus signal: none
Teacher disagreement score0.621
Threshold uncertainty score0.892

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0030.005
Science and technology studies0.0000.001
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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 head0.006
GPT teacher head0.237
Teacher spread0.231 · 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