Microencapsulation of a crop protection compound by initiated chemical vapor deposition

Ranjita K. Bose, Alex M. Heming, Kenneth K.S. Lau

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

In this work, initiated chemical vapor deposition (iCVD) has been employed as a one-step liquid-free process combining polymerization and coating for the encapsulation of 3D non-planar substrates. Coatings have been applied using iCVD specifically to encapsulate microparticles of a highly water-soluble crop protection compound (CPC) for controlled release. Release behavior has been compared among different coatings synthesized using different iCVD processing conditions, including varying degrees of polymer hydrophobicity, continuous and pulsed deposition, and crosslinking. iCVD has been found to provide tunable synthesis of hydrophobic, crosslinked polymers with control over mass diffusivity, and coating thickness for enhancing barrier properties. Initiated chemical vapor deposition (iCVD) is a viable liquid-free process for the tandem synthesis and conformal coating of polymers onto microparticles of a crop protection compound. By varying iCVD conditions, the barrier properties of the coatings can be controlled via tuning hydrophobicity, crosslinking, film thickness, and mass diffusivity.

Original languageEnglish (US)
Pages (from-to)1375-1380
Number of pages6
JournalMacromolecular Rapid Communications
Volume33
Issue number16
DOIs
StatePublished - Aug 28 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Chemistry
  • Polymers and Plastics
  • Organic Chemistry

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