Wang La, Li Jianzhang, Zhang Shifeng, Shi Junyou
MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China.
College of Forestry, Beihua University, Jilin 132013, China.
Materials (Basel). 2016 Mar 15;9(3):193. doi: 10.3390/ma9030193.
All-biomass soy protein-based films were prepared using soy protein isolate (SPI), glycerol, hydroxypropyl cellulose (HPC) and epoxy castor oil acid sodium (ECOS). The effect of the incorporated HPC and ECOS on the properties of the SPI film was investigated. The experimental results showed that the tensile strength of the resultant films increased from 2.84 MPa (control) to 4.04 MPa and the elongation at break increased by 22.7% when the SPI was modified with 2% HPC and 10% ECOS. The increased tensile strength resulted from the reaction between the ECOS and SPI, which was confirmed by attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD). It was found that ECOS and HPC effectively improved the performance of SPI-based films, which can provide a new method for preparing environmentally-friendly polymer films for a number of commercial applications.
采用大豆分离蛋白（SPI）、甘油、羟丙基纤维素（HPC）和环氧蓖麻油酸钠（ECOS）制备了全生物质大豆蛋白基薄膜。研究了添加HPC和ECOS对SPI薄膜性能的影响。实验结果表明，当SPI用2%HPC和10%ECOS改性时，所得薄膜的拉伸强度从2.84MPa（对照）提高到4.04MPa，断裂伸长率提高了22.7%。拉伸强度的提高源于ECOS与SPI之间的反应，衰减全反射傅里叶变换红外光谱（ATR-FTIR）、扫描电子显微镜（SEM）和X射线衍射分析（XRD）证实了这一点。结果发现，ECOS和HPC有效地改善了SPI基薄膜的性能，这可为制备用于多种商业应用的环保聚合物薄膜提供一种新方法。
