Multi-Stimuli-Responsive, Topology-Regulated, and Lignin-Based Nano/Microcapsules from Pickering Emulsion Templates for Bidirectional Delivery of Pesticides

The increasing demand for improving pesticide utilization efficiency has prompted the development of sustainable, targeted, and stimuli-responsive delivery systems. Herein, a multi-stimuli-responsive nano/microcapsule bidirectional delivery system loaded with pyraclostrobin (Pyr) is prepared through interfacial cross-linking from a lignin-based Pickering emulsion template. During this process, methacrylated alkali lignin nanoparticles (LNPs) are utilized as stabilizers for the tunable oil–water (O/W) Pickering emulsion. Subsequently, a thiol–ene radical reaction occurs with the acid-labile cross-linkers at the oil–water interface, leading to the formation of lignin nano/microcapsules (LNCs) with various…

• NN
  National Natural Science Foundation of China

  Awards: 32372575, 2023C02025
• NK
  National Key Research and Development Program of China

  Award: 2022YFD1700504
• KR
  Key Research and Development Program of Zhejiang Province

  Awards: 2023C02025, 2023C02030