Evidence map›Paper›PMID 33919262›Full record

ArticleMaterials (Basel, Switzerland)2021

Impact of Backbone Amide Substitution at the Meta- and Para-Positions on the Gas Barrier Properties of Polyimide.

Qian Wen, Ao Tang, Chengliang Chen, Yiwu Liu, Chunguang Xiao, Jinghua Tan, Duxin Li

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Materials (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.2field-weighted citation impact, top 59% 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

1 citing paper in PubMed, 8 citations in OpenAlex.

  1. Article
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 1 country.

Qian WenState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China.ORCID 0000-0001-9346-2885
Ao TangKey Laboratory of Advanced Packaging Materials and Technology of Hunan Province, National and Local Joint Engineering Center of Advanced Packaging Materials R & D Technology, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China.
Chengliang ChenKey Laboratory of Advanced Packaging Materials and Technology of Hunan Province, National and Local Joint Engineering Center of Advanced Packaging Materials R & D Technology, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China.
Yiwu LiuKey Laboratory of Advanced Packaging Materials and Technology of Hunan Province, National and Local Joint Engineering Center of Advanced Packaging Materials R & D Technology, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China.ORCID 0000-0001-7860-8532
Chunguang XiaoState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China.
Jinghua TanKey Laboratory of Advanced Packaging Materials and Technology of Hunan Province, National and Local Joint Engineering Center of Advanced Packaging Materials R & D Technology, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China.ORCID 0000-0003-1642-5006
Duxin LiState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China.
Hunan University of Technology · CNCentral South University · CN

Funding

Duxin LI 2018GK2063
6 · The paper itself

Abstract

This study designed and synthesised a meta-amide-substituted dianiline monomer (m-DABA) as a stereoisomer of DABA, a previously investigated para-amide-substituted dianiline monomer. This new monomer was polymerised with pyromellitic dianhydride (PMDA) to prepare a polyimide film (m-DABPI) in a process similar to that employed in a previous study. The relationship between the substitution positions on the monomer and the gas barrier properties of the polyimide film was investigated via molecular simulation, wide-angle X-ray diffraction (WXRD), and positron annihilation lifetime spectroscopy (PALS) to gain deeper insights into the gas barrier mechanism. The results showed that compared with the para-substituted DABPI, the m-DABPI exhibited better gas barrier properties, with a water vapour transmission rate (WVTR) and an oxygen transmission rate (OTR) as low as 2.8 g·m

Indexed as

dianiline monomerflexible display technologypolymerisation

Identifiers

PMID33919262
PMCPMC8122393
OpenAlexW3156893360

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.