@Article{jrm.2020.010176,
AUTHOR = {Xing Zhou, Xin Zhang, Dong Wang, Changqing Fang, Wanqing Lei, Zhigang Huang, Yonghua Song, Xinyu He, Yingwei Huang},
TITLE = {Preparation and Characterization of Waterborne Polyurethane/Cellulose Nanocrystal Composite Membrane from Recycling Waste Paper},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {8},
YEAR = {2020},
NUMBER = {6},
PAGES = {631--645},
URL = {http://www.techscience.com/jrm/v8n6/39011},
ISSN = {2164-6341},
ABSTRACT = {Cellulose plays a key role in abundant organic natural materials meeting the increasing demand for green and biocompatible products. The highly crystalline nanoscale component of cellulose nanocrystals has recently attracted great
attention due to the versatile performance as filler or matrix in producing functional materials. In this work, we prepared the waterborne polyurethane via a prepolymer process, and obtained cellulose and cellulose nanocrystals from waste
paper via a facile acid hydrolysis process. After that, the cellulose nanocrystals
were assembled into film and mixed with polyurethane to prepare flexible polyurethane/cellulose nanocrystals composite membrane with different soaking time.
The correlation between the bulk structure and applied properties including thermal resistance and mechanical property was investigated by using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron
spectroscopy (XPS), scanning electron microscopy (SEM), thermogravimetric
analysis (TGA), differential scanning calorimetry (DSC) and folding test. The
structure analysis indicates that cellulose nanocrystals prepared from used paper
have a quality similar to that of commercial cellulose. Meanwhile, the cellulose
nanocrystals have been mixed with polyurethane uniformly. Polyurethane can significantly benefit to the thermal resistance and mechanical property of the cellulose nanocrystals film. The polyurethane/cellulose nanocrystals composite
membrane present good flexibility and may hold a significantly potential application as visual and flexible material.},
DOI = {10.32604/jrm.2020.010176}
}