# Rigid epoxy networks with very high intrinsic fracture toughness using a piperazine-based in-situ polymerization strategy

https://mdr.nims.go.jp/datasets/089dc225-202b-4ec2-b3bb-a3c0eefbdedf

## File

- [Rigid Epoxy Networks_author-version.pdf](https://mdr.nims.go.jp/filesets/3de3a718-f5d6-42f2-8b4e-cf96d9679e40/download) ([Detail](https://mdr.nims.go.jp/filesets/3de3a718-f5d6-42f2-8b4e-cf96d9679e40.md))

## Id

089dc225-202b-4ec2-b3bb-a3c0eefbdedf

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-11-17T05:13:55.224119Z

## Updated at

2025-01-04T03:30:33.450112Z

## Published at

2025-01-04T03:30:33.685663Z

## Doi

https://doi.org/10.48505/nims.4281

## First published url

https://doi.org/10.1016/j.matlet.2023.133821

## Date published

2023-01-03

## Recorded date published

2023-3

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Rigid epoxy networks with very high intrinsic fracture toughness using a
    piperazine-based in-situ polymerization strategy
  title_type: original
  lang: en

## Description

- description: Various fillers and thermoplastics are often added to thermoset epoxies
    to improve toughness, but this may compromise their other properties or make synthesis
    difficult. In this study, brittle crosslinked epoxy networks are significantly
    toughened through in-situ polymerization of epoxy using piperazine, which reacts
    at moderately low temperatures in a catalyst-free one-pot method. Dynamic mechanical
    properties and nanoscale morphology suggest the mechanism for improved toughness
    is higher yielding near the crack tip due to increased molecular weight between
    crosslinks. The resulting toughness is higher than any other unfilled all-epoxy
    materials found in the literature.
  description_type: abstract
  lang: eng

## Creator

- name: Jonathon Tanks
  role: author
  orcid: https://orcid.org/0000-0002-0232-8240
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kimiyoshi Naito
  role: author
  orcid: https://orcid.org/0000-0002-3334-4876
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kenji Tamura
  role: author
  orcid: https://orcid.org/0000-0001-6578-0923
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Thermoset epoxy
  schema: not_defined
- subject: Thermoplastic epoxy
  schema: not_defined
- subject: Fracture toughness
  schema: not_defined
- subject: Piperazine
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2023-01-03
end_date: 2025-01-03

## Journal

- title: MATERIALS LETTERS
  issn: 0167577X
  volume: '335'
  start_page: 133821
  end_page: 133821

## Conference



## Related item



## Funding

- identifier: Grant-in-Aid for Young Scientists (KAKENHI)
  funder_name: JSPS
  description: Understanding the Relationship between Polymer Structure and Creep
    Deformation/Failure by Multiscale Analysis

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 3de3a718-f5d6-42f2-8b4e-cf96d9679e40
  filename: Rigid Epoxy Networks_author-version.pdf
  content_type: application/pdf
  size: 3238831
  md5: 192a5bee20eb2bb344d2d69a49844a95

## Thumbnail

fileset_id: 3de3a718-f5d6-42f2-8b4e-cf96d9679e40
filename: Rigid Epoxy Networks_author-version.pdf