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Shaping characteristics in alginate hydrogel encapsulation via a two-fluid spraying method

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Abstract

Recently, an alginate hydrogel containing amphiphilic liposomes was suggested for application to an antifouling coating. In this study, we investigate the shaping characteristics of the alginate hydrogel by a spraying method for application to the coating. Sodium alginate droplets from the spraying nozzle are known to be differently shaped by several external forces during the encapsulation process when such a droplet impacts onto the surfaces of liquid containing calcium ions. We adopted a two-fluid spraying method for fast alginate droplets with a scalable size suitable for mass production. Various shapes, such as mushroom, petal, sphere, and thin-sheet alginate hydrogel shapes containing liposomes, were obtained via this experimental approach. Supported by a theoretical analysis, we determined regimes for the various shapes depending on the droplet size and the concentration of the sodium alginate solution. Alginate hydrogel of different shapes based on the regimes will be used for the coating throughout a different post-processing.

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Acknowledgments

This research was a part of the project entitled the “Development of active controlled tidal current generation technology” funded by the Ministry of Oceans and Fisheries of Korea (20110171).

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Author notes

  1. Baekhoon Seong and Jihoon Kim have contributed equally to this work.

Authors and Affiliations

  1. Coastal and Environmental Engineering Division, Korea Institute of Ocean Science and Technology (KIOST), Ansan, Sangnok-gu, Gyeonggi-do, 15627, Republic of Korea

    Baekhoon Seong, Jihoon Kim & Kwang-Soo Lee

  2. School of Mechanical Engineering, Sungkyunkwan University, Suwon, Republic of Korea

    Sejin Jung, Giho Kang, Jinkee Lee & Doyoung Byun

  3. Department of Mechanical Engineering, Berkeley Sensor and Actuator Center, University of California Berkeley, Berkeley, CA, 94720, USA

    Hyung-Seok Jang

  4. Mechanical Engineering, Jeju National University, 102 Jejudaehak-ro, Jeju-si, Jeju Special Self-Government Province, 63243, Republic of Korea

    Jin Hwan Ko

Authors
  1. Baekhoon Seong
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  2. Jihoon Kim
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  8. Hyung-Seok Jang
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  9. Jin Hwan Ko
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Corresponding authors

Correspondence to Hyung-Seok Jang or Jin Hwan Ko.

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Seong, B., Kim, J., Jung, S. et al. Shaping characteristics in alginate hydrogel encapsulation via a two-fluid spraying method. J Coat Technol Res 15, 1157–1165 (2018). https://doi.org/10.1007/s11998-018-0060-9

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  • DOI: https://doi.org/10.1007/s11998-018-0060-9

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