利用纤维素工业废丝/胶高效制备再生纤维素纳米晶OACSTPCD

In order to solve the reutilization problems of waste filament of regenerated cellulose industrial filament and waste filament/gel during production,a method for efficient preparation of regenerated cellulose nanocrystal(RCNC)using industrial waste filament of regenerated cellulose industrial filament or waste filament/gel as raw materials was designed.The structural performances of new solvent method,industrial waste filament of viscose regeneration cellulose,RCNC prepared with pulp and CNC were compared by Fourier transform infrared spectroscopy,Malvern laser particle size analyzer,scanning electron microscopy,X-ray diffraction,atomic force microscopy and so on.The results demonstrated that regeneration cellulose industrial waste filament/gel with new solvent method could be acid-hydrolyzed under milder conditions due to its characteristics as high orientation,high crystallinity and simple structure.The yield of RCNC obtained reached 65.09%,which was significantly higher than the yield of CNC prepared from pulp,and exhibited higher crystallinity.Compared with RCNC obtained from viscose industrial waste filament,both had similar size and morphology presenting a nanoscale rod-like structure with lengths and aspect ratios of 93 nm±26 nm and 35±20,respectively.This indicated that the method had a certain universality for industrial cellulose waste filaments from different sources.