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Effect of graphene and fabrication technique on the release kinetics of carvacrol from polylactic acid
Composites Science and Technology ( IF 8.3 ) Pub Date : 2019-01-01 , DOI: 10.1016/j.compscitech.2018.11.003
Roberto Scaffaro , Andrea Maio , Francesco Lopresti

Abstract Porous membranes and thin films containing poly-lactic acid (PLA), carvacrol (CRV) and graphene nanoplatelets (GNP) were fabricated by electrospinning and solvent casting at different formulations. The systems were characterized from a mechanical, morphological, calorimetric and spectroscopic point of view. CRV release as a function of time was studied and a mathematical model was used to fit and interpret the data in order to investigate the release mechanism. The results indicate that the incorporation of GNP generally determined a simultaneous strengthening, stiffening and toughening effect, while preserving a good ductility. Furthermore, integrating GNP allowed tuning the amount and kinetics of CRV release, and proved to reduce the initial burst release effect.

中文翻译:

石墨烯和制备技术对香芹酚从聚乳酸中释放动力学的影响

摘要 通过静电纺丝和溶剂浇铸以不同的配方制备了含有聚乳酸 (PLA)、香芹酚 (CRV) 和石墨烯纳米片 (GNP) 的多孔膜和薄膜。从机械、形态、量热和光谱的角度对系统进行了表征。研究了作为时间函数的 CRV 释放,并使用数学模型拟合和解释数据以研究释放机制。结果表明,GNP 的加入通常决定了同时增强、硬化和增韧效果,同时保持良好的延展性。此外,整合 GNP 可以调整 CRV 释放的数量和动力学,并证明可以降低初始爆发释放效应。
更新日期:2019-01-01
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