# Biocide-free Ecofriendly Antifouling Marine Coatings using Bottlebrush Polymers

https://mdr.nims.go.jp/datasets/b7ba93cb-3aec-4975-8555-b937d6c655f0

## File

- [Abstract_AMSDG_2026_Yoshikawa.pdf](https://mdr.nims.go.jp/filesets/195d2637-560b-4dd7-bb2c-54a7f89e5f4b/download) ([Detail](https://mdr.nims.go.jp/filesets/195d2637-560b-4dd7-bb2c-54a7f89e5f4b.md))

## Id

b7ba93cb-3aec-4975-8555-b937d6c655f0

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-09-04T04:55:28.095368Z

## Updated at

2026-11-04T00:20:20.848711Z

## Published at

2026-11-04T01:30:06.591754Z

## Doi

https://doi.org/10.48505/nims.8693

## First published url



## Date published



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## Resource type

conference_paper

## Manuscript type

na

## Collection



## Title

- title: Biocide-free Ecofriendly Antifouling Marine Coatings using Bottlebrush Polymers
  title_type: original
  lang: en

## Description

- description: "Major antifouling marine paints on the market contain cuprous oxide
    as a biocide. Although the products are effective at preventing biofouling, the
    possibility cannot be denied that long-term leaching and the accumulation of cuprous
    oxide in the ocean may destroy the marine environment and ecosystems, similar
    to tributyl tin biocides. Therefore, many efforts have been made to develop biocide-free,
    non-releasing antifouling coating technologies.\r\nIn this work, we developed
    a next-generation, biocide-free marine antifouling coating technology. Our approach
    merged two uniquely different polymers from our previous innovations. First, we
    synthesized well-defined 2-hydroxypropyl acrylamide (HPA) based bottlebrush polymers
    with concentrated polymer brush (CPB) structures, which exhibit excellent bioinertness
    and low-friction property. Secondly, we synthesized photoreactive linear copolymers
    of 2-hydroxypropyl acrylamide (HPA) and N-benzophenone acrylamide (BPA) which
    rapidly crosslinks upon exposure to UV lights for 3 min or sunlight for just 30
    minutes. By simply mixing these two types of polymers and coating onto polymeric
    substrates, we have developed a scalable method for achieving effective antifouling
    properties in one step on a broad range of polymer substrates. \r\nThe resistance
    of coatings against hydrolysis in seawater was demonstrated in accelerated degradation
    experiments at 80 °C, and the coating thickness was stable after 24 h heating.
    The coating was also confirmed to be stable for 3 months dipping in sea water
    at room temperature. The optimized coatings prevented Cypris larvae attachment
    for up to 9 days and prevented the settling of marine organisms in the sea for
    up to 2.5 months. Due to the ease of application, long-term durability and effective
    antifouling property, our bottlebrush coating technology is expected to be exploited
    in biocide-free marine paints, realizing energy-saving and low environment loads.
    The details will be discussed.\r\n"
  description_type: abstract
  lang: eng

## Creator

- name: Chiaki Yoshikawa
  role: author
  orcid: https://orcid.org/0000-0002-6589-387X
  organization: National Institute for Materials Science
  department: Research Center for Macromolecules and Biomaterials/Macromolecules Field/Polymer
    Surfaces and Devices Team

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## Keyword

- subject: Concentrated polymer brush
  schema: not_defined
- subject: Bottle brush polymer
  schema: not_defined
- subject: Antifouling
  schema: not_defined
- subject: Marine Coating
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

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## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: AMSDG2026 (1st International Conference on Advanced Materials for Sustainable
  Development Goals)
start_date: 2026-06-24
end_date: 2026-06-26
identifier: https://amsdg2026.conf.tw/site/page.aspx?pid=901&sid=1685&lang=en

## Related item



## Funding

- identifier: JPMJTM19EJ & JPMJTR25TE
  funder_name: JST

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## Fileset

- id: 195d2637-560b-4dd7-bb2c-54a7f89e5f4b
  filename: Abstract_AMSDG_2026_Yoshikawa.pdf
  content_type: application/pdf
  size: 251063
  md5: 24ddc9ea0f1d1c30229e5469e90f8e61

## Thumbnail

fileset_id: 195d2637-560b-4dd7-bb2c-54a7f89e5f4b
filename: Abstract_AMSDG_2026_Yoshikawa.pdf