Evidence map›Paper›PMID 34451269›Full record

ArticlePolymers2021

Quantum Mechanical Investigation of the Oxidative Cleavage of the C-C Backbone Bonds in Polyethylene Model Molecules.

Qixuan Jiang, Zhongyu Li, Ziheng Cui, Ren Wei, Kaili Nie, Haijun Xu, Luo Liu

Open access · goldAbstract read
In one paragraph

Article in Polymers, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.6field-weighted citation impact, top 40% of its field
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

5 citing papers in PubMed, 25 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Review
  5. Review
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

7 authors at 2 institutions in 2 countries.

Qixuan JiangBeijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China.
Zhongyu LiBeijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China.
Ziheng CuiBeijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China.
Ren WeiJunior Research Group Plastic Biodegradation, Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Straße 4, D-17487 Greifswald, Germany.ORCID 0000-0003-3876-1350
Kaili NieBeijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China.
Haijun XuBeijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China.
Luo LiuBeijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China.ORCID 0000-0002-3542-8213
Beijing University of Chemical Technology · CNUniversität Greifswald · DE

Funding

European Union's Horizon 2020 research and innovation program 870294National Natural Science Foundation of China 31961133017, 52073022, 21978017
6 · The paper itself

Abstract

Recalcitrant plastic waste has caused serious global ecological problems. There is an urgent need to develop environmentally friendly and efficient methods for degrading the highly stable carbon skeleton structure of plastics. To that end, we used a quantum mechanical calculation to thoroughly investigate the oxidative scission of the carbon-carbon (C-C) backbone in polyethylene (PE). Here, we studied the reaction path of C-C bond oxidation via hydroxyl radical in PE. The flexible force constants and fuzzy bond orders of the C-C bonds were calculated in the presence of one or more carbocations in the same PE carbon chain. By comparison, the strength of the C-C bond decreased when carbocation density increased. However, the higher the density of carbocations, the higher the total energy of the molecule and the more difficult it was to be generated. The results revealed that PE oxidized to alcohol and other products, such as carboxylic acid, aldehyde and ketone, etc. Moreover, the presence of carbocations was seen to promote the cleavage of C-C backbones in the absence of oxygen.

Indexed as

C–C bond cleavagefree radicalsoxidationplastic degradation

Identifiers

PMID34451269
PMCPMC8398876
OpenAlexW3195979760

What OpenQuestion holds

Textmetadata
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.