Impact of Layer-by-Layer Self-Assembly Clay-Based Nanocoating on Flame Retardant Properties of Sisal Fiber Cellulose Microcrystals
作者： Chun Wei , Sihua Zeng , Yuyuan Tan , Wu Wang , Jian Lv
DOI: 10.1155/2015/691290
关键词: Thermogravimetric analysis 、 Surface charge 、 Chemical engineering 、 Polyelectrolyte 、 Microcrystalline 、 Materials science 、 Zeta potential 、 Adsorption 、 Infrared spectroscopy 、 Fourier transform infrared spectroscopy
摘要: The renewable cationic polyelectrolyte chitosan (CH) and anionic nanomontmorillonite (MMT) layers were alternately deposited on the surface of sisal fiber cellulose microcrystals (SFCM) via layer-by-layer (LBL) self-assembly method. structure properties composites characterized by zeta potential, thermal gravimetric analysis (TGA), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectrometer (FTIR), microcalorimeter (MCC), so forth. potential results show that microcrystalline charge reversed due to adsorption CH MMT nanoplatelets during multilayer deposition. characteristic peaks appear in XRD patterns SFCM(CH/MMT)5 SFCM(CH/MMT)10 composites. Additionally, FESEM reveals is covered with a layer material containing Si, which has been verified elemental analysis. TGA initial decomposition (weight loss 5%) temperature increased 4°C compared pure SFCM. On other hand, carbon residue percentage 25.1%, higher than SFCM (5.4%) 19.7%. Eventually, it testified MCC measurement CH/MMT coating can significantly reinforce flame retardant performance
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