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Ultrasonic cavitation driven fabrication of organic solvent free lignin/prochloraz nano capsules to promote resistance to photolysis and rain wash, and provide extended release performance

  • Jingtian Chen , Miao Wang , Yong Qian EMAIL logo , Shanyuan Tan , Huan Wang , Mingsong Zhou and Xueqing Que EMAIL logo
Published/Copyright: February 25, 2021
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Holzforschung
From the journal Holzforschung Volume 75 Issue 9

Abstract

Lignin is a natural macromolecular sun blocker and provides an ideal protection material for pesticides that have poor photostability. In this study, alkali lignin/prochloraz capsules (AL-P) were prepared via one-pot ultrasonic cavitation. The results demonstrated that the produced AL-P were uniform spheres with sizes of 170–375 nm. The prochloraz encapsulation efficiency (EE) and loading capacity (LC) reached as high as 91.8 and 98.5%, respectively. Adding a small of surfactant reduced the size of the capsules, but both EE and LC were decreased. AL-P exhibited excellent extended release performance. The cumulative release of AL-P in the first 45 h was 76.1% and continuous release was maintained after 96 h. The resulting AL-P have improved photostability under UV irradiation radiation. Finally, AL-P capsules were sprayed on the mango leaves and bananas to act as preservatives, AL-P capsules had stronger rain wash resistance and were better preserved demonstrating their industrial applicability. Together, organic solvent free AL-P capsules demonstrate a method to improve the efficiency of photosensitive pesticides.

Keywords: alkali lignin/prochloraz capsules; anti-photolysis; sustained release
Corresponding authors: Yong Qian and Xueqing Que, School of Chemistry and Chemical Engineering, Guangdong Engineering Research Center for Green Fine Chemicals, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, P. R. China; and State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, P. R. China, E-mail: ,
Jingtian Chen and Miao Wang contributed equally to this work.

Funding source: The National Natural Science Foundation of China (NSFC)

Award Identifier / Grant number: 21878113

Funding source: Guangdong Province Science and Technology Research Project of China

Award Identifier / Grant number: 2020B1515020055

Funding source: Guangzhou Science and Technology Research Project of China

Award Identifier / Grant number: 201806010139

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: We gratefully acknowledge the financial support from the National Natural Science Foundation of China (NSFC) (21878113), Guangdong Province Science and Technology Research Project of China (2020B1515020055) and Guangzhou Science and Technology Research Project of China (201806010139).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Supplementary Material

The online version of this article offers supplementary material (https://doi.org/10.1515/hf-2020-0120).

Received: 2020-05-01
Accepted: 2020-12-23
Published Online: 2021-02-25
Published in Print: 2021-09-27

© 2021 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Original articles
  3. Specific heat capacity of wood between −140 and 50 °C in dry and wet state
  4. Growth behavior of wood-destroying fungi in chemically modified wood: wood degradation and translocation of nitrogen compounds
  5. Characterisation of compound middle lamella isolated by a combination of wet-beating, sedimentation, and methanol dialysis
  6. Review
  7. A review of lignin hydrogen peroxide oxidation chemistry with emphasis on aromatic aldehydes and acids
  8. Original articles
  9. Fibre development in an intensified mechanical pulping process
  10. Tensile properties of finger-jointed lumber under high-temperature and oxygen-free conditions
  11. Predicting strength of Finnish birch veneers based on three different failure criteria
  12. Non-fluorine surface modification of acetylated birch for improved water repellence
  13. Ultrasonic cavitation driven fabrication of organic solvent free lignin/prochloraz nano capsules to promote resistance to photolysis and rain wash, and provide extended release performance
https://doi.org/10.1515/hf-2020-0120
Keywords for this article
alkali lignin/prochloraz capsules; anti-photolysis; sustained release

Articles in the same Issue

  1. Frontmatter
  2. Original articles
  3. Specific heat capacity of wood between −140 and 50 °C in dry and wet state
  4. Growth behavior of wood-destroying fungi in chemically modified wood: wood degradation and translocation of nitrogen compounds
  5. Characterisation of compound middle lamella isolated by a combination of wet-beating, sedimentation, and methanol dialysis
  6. Review
  7. A review of lignin hydrogen peroxide oxidation chemistry with emphasis on aromatic aldehydes and acids
  8. Original articles
  9. Fibre development in an intensified mechanical pulping process
  10. Tensile properties of finger-jointed lumber under high-temperature and oxygen-free conditions
  11. Predicting strength of Finnish birch veneers based on three different failure criteria
  12. Non-fluorine surface modification of acetylated birch for improved water repellence
  13. Ultrasonic cavitation driven fabrication of organic solvent free lignin/prochloraz nano capsules to promote resistance to photolysis and rain wash, and provide extended release performance
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