Zhao Hongbin, Fei Xuening, Cao Lingyun, Zhang Baolian, Liu Xin
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
School of Science, Tianjin Chengjian University, Tianjin 300384, China.
Materials (Basel). 2019 Jan 27;12(3):393. doi: 10.3390/ma12030393.
Their controlled release property is the most important feature of functional microcapsules and carriers. In this work, melamine resin shell fragrance microcapsules were fabricated in a non-ionic system, and their chemical structure, particle size, and morphology were analyzed. The sustained release property of the prepared microcapsules over 2400 h was studied with a weighing calculation method, and based on the fitting results, the release rate trend was consistent with the Peppas model (y = 100 - 2.30t). Furthermore, the sustained and broken release behavior of the microcapsules in impregnated fabric samples were investigated for the first time by our proposed Solid Phase Microextraction-Gas Chromatography-Mass Spectrometer (SPME-GC-MS) method. The qualitative and quantitative analysis results showed that the middle and base note compositions were outstanding in the sustained release state, and the top note showed more advantages in the broken release state. In addition, it was found that the characteristic peak species and intensities of the sample finished with the microcapsules were more similar to pure essence oil than the sample finished by traditional methods, suggesting that the prepared microcapsules showed an excellent odor recovery and strength.
它们的控释性能是功能性微胶囊和载体最重要的特征。在这项工作中，在非离子体系中制备了三聚氰胺树脂壳香料微胶囊，并对其化学结构、粒径和形态进行了分析。采用称重计算法研究了所制备微胶囊在2400小时以上的缓释性能，根据拟合结果，释放速率趋势与Peppas模型（y = 100 - 2.30t）一致。此外，首次采用我们提出的固相微萃取-气相色谱-质谱联用（SPME-GC-MS）方法研究了微胶囊在浸渍织物样品中的缓释和破释行为。定性和定量分析结果表明，中调香成分和基调香成分在缓释状态下表现突出，前调香成分在破释状态下更具优势。此外，发现用微胶囊处理后的样品的特征峰种类和强度比用传统方法处理后的样品更接近纯精油，这表明所制备的微胶囊具有优异的气味恢复能力和强度。
