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Preparation of 3-Iodo-2-propargyl-butyl-carbamate-Loaded Microcapsules for Long-Term Mold Resistance in Bamboo
Gege Bao1,2, Lu He1,2, Xiaofeng Zhang1,2
1International Centre for Bamboo and Rattan, Beijing 100102, China.
Abstract:
Bamboo, recognized as a nutrient-dense biomass material, exhibits a high susceptibility to mold infestations, which can result in discoloration and a notable decrease in longevity, thereby posing potential health risks to humans. In this study, melamine-formaldehyde resin (MFR) was utilized to load 3-iodo-2-propargyl-butyl-carbamate (IPBC) via in situ polymerization, resulting in the preparation of microcapsules suitable for anti-mold protection of bamboo. The mold resistance of Aspergillus niger, Trichoderma viride, and Penicillium citrinum were evaluated. A scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier-transform infrared spectrometer (FTIR), and thermogravimetric analysis (TG) were used to characterize and analyze the formation process, surface morphology, structural composition, and thermal stability of the microcapsules. The effects of different surfactants (Span 80, Tween 80, SDBS, SDS, GA) on the microscopic morphology of the anti-mold microcapsules were investigated. The results show that microcapsules prepared with Tween 80 as the surfactant exhibited good mold resistance. After coating MFR with IPBC, the drug loading of I-MFR is 20%, with an encapsulation efficiency of 80%, demonstrating excellent anti-mold performance. The microcapsules show favorable anti-mold performance and have broad application prospects in bamboo protection.
Insights
This study developed microcapsules using melamine-formaldehyde resin (MFR) and 3-iodo-2-propargyl-butyl-carbamate (IPBC) for effective anti-mold protection of bamboo. The resulting microcapsules demonstrated excellent performance against common mold species.
Area of Science:
- Materials Science
- Biotechnology
- Wood Preservation
Background:
- Bamboo is a valuable biomass resource but susceptible to mold, leading to degradation and health concerns.
- Mold infestation causes discoloration and reduces the lifespan of bamboo products.
- Effective anti-mold treatments are crucial for preserving bamboo's utility and safety.
Purpose of the Study:
- To develop and characterize microcapsules for enhanced anti-mold protection of bamboo.
- To investigate the efficacy of melamine-formaldehyde resin (MFR) loaded with 3-iodo-2-propargyl-butyl-carbamate (IPBC) against common mold species.
- To optimize microcapsule preparation using different surfactants.
Main Methods:
- In situ polymerization of MFR to encapsulate IPBC, forming anti-mold microcapsules.
- Evaluation of mold resistance against Aspergillus niger, Trichoderma viride, and Penicillium citrinum.
- Characterization using SEM, TEM, FTIR, and TG to analyze microcapsule properties.
- Investigation of surfactant effects (Span 80, Tween 80, SDBS, SDS, GA) on morphology.
Main Results:
- Microcapsules prepared with Tween 80 exhibited superior mold resistance.
- The optimized I-MFR microcapsules achieved 20% drug loading and 80% encapsulation efficiency.
- Characterization confirmed successful formation, desired morphology, and thermal stability of the microcapsules.
- Significant anti-mold performance was demonstrated against tested fungal species.
Conclusions:
- The developed IPBC-loaded MFR microcapsules provide effective anti-mold protection for bamboo.
- Tween 80 is an effective surfactant for preparing high-performance anti-mold microcapsules.
- These microcapsules show promising applications in bamboo preservation and extending product longevity.
