Journal
JOURNAL OF MICROENCAPSULATION
Volume 27, Issue 4, Pages 355-364Publisher
INFORMA HEALTHCARE
DOI: 10.3109/02652040903221532
Keywords
Simple coacervation; complex coacervation; microcapsule; insect sex pheromone; cross-linking; release control
Funding
- National Science Foundation of China [20574031]
- Natural Science Foundation of Shandong province, China [Z2004B05]
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With dodecanol (C12OH) as a model molecule of insect sex pheromone as core material, natural polymers gelatin (GE) and acacia gum (AG) as wall materials, microcapsules aiming to be a sprayable environmentfriendly pesticide were prepared via GE simple coacervation and complex coacervation of GE and AG. C12OH encapsulation in complex coacervation was higher than those in simple coacervation. Its encapsulation was enhanced with increase in wall material cross-linking. C12OH release revealed that samples from simple coacervation reached their end in 7 days, whereas those from complex coacervation manifested a quick release followed by a constant release. With increase in wall material cross-linking, the release was slowed down. SEM observation confirmed that core-shell morphology existed in the capsules.
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