Evidence map›Paper›PMID 41754726›Full record

ArticlePolymers2026

Solid State Alkaline Depolymerization of Polyester Elastane Textiles in a Laboratory Kneader.

Leonard Both, Isabel Zerfuss, Mandy Paschetag, Stephan Scholl

Abstract read
In one paragraph

Article in Polymers, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Leonard Bothmatterr GmbH, Friedrich-Seele-Str. 3, 38122 Braunschweig, Germany.
Isabel ZerfussInstitute for Chemical and Thermal Process Engineering, Technische Universität Braunschweig, Langer Kamp 7, 38106 Braunschweig, Germany.ORCID 0009-0005-7972-6262
Mandy PaschetagInstitute for Chemical and Thermal Process Engineering, Technische Universität Braunschweig, Langer Kamp 7, 38106 Braunschweig, Germany.ORCID 0000-0003-2822-3516
Stephan SchollInstitute for Chemical and Thermal Process Engineering, Technische Universität Braunschweig, Langer Kamp 7, 38106 Braunschweig, Germany.

Funding

Bundesministerium für Forschung, Technologie und Raumfahrt 033R404Bundesministerium für Forschung, Technologie und Raumfahrt 033R404A
6 · The paper itself

Abstract

Elastane is ubiquitous in polyester-based textiles and complicates depolymerization-based recycling because it can undergo thermal degradation and chemical bond cleavage, consuming reagents and forming low-molecular by-products that may compromise monomer quality. Here, we investigate alkaline PET depolymerization of PET/elastane blends under an intentional base-competition scenario in a laboratory kneader. Pure PET (100/0) and PET/EL blends (95/5 and 85/15, wt/wt) were processed under quasi-solid-state conditions at 140 °C for 5 min using solid NaOH dosed at 2.1 mol per mol PET repeat unit and pelletized feedstocks to ensure scale-relevant mixing and reproducible chamber filling. Torque and bulk-temperature profiles were similar across compositions, and isolated terephthalic acid yields remained in a narrow corridor (68-71%), indicating that PET depolymerization is not measurably impaired by 5-15 wt% elastane within this reaction window. Differential scanning calorimetry of water-insoluble residues revealed pronounced changes in elastane-related thermal transitions, evidencing elastane modification during treatment. Targeted

Indexed as

alkaline depolymerizationdifferential scanning calorimetryelastane degradationpolyester recyclingterephthalic acid recoverytextile recyclingwater-insoluble residue

Identifiers

PMID41754726
PMCPMC12944338

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.