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首页> 外文期刊>Journal of Applied Polymer Science >Effect of hydrochloric acid on the properties of biodegradable packaging materials of carboxymethylcellulose/poly(vinyl alcohol) blends
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Effect of hydrochloric acid on the properties of biodegradable packaging materials of carboxymethylcellulose/poly(vinyl alcohol) blends

机译：盐酸对羧甲基纤维素/聚乙烯醇共混物生物降解包装材料性能的影响

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The main focus of this research was to prepare ecofriendly biodegradable packaging materials with carboxymethylcellulose (CMC) and poly(vinyl alcohol) (PVA). Different blend films were prepared through the variation of the ratios of CMC to PVA (00:100, 30:70, 50:50, 70:30, 100:00 w/w) with and without hydrochloric acid. The mechanical properties, including the tensile strength (TS), percentage elongation at break (Eb), water uptake, and solubility in water, of the films were investigated. A soil burial test was also performed. The prepared films were characterized by attenuated total reflectance (ATR)-Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The highest TS and Eb values of the blend films were recorded as 19.52 MPa and 34.52%, respectively. ATR-FTIR spectroscopy, DSC, and TGA results provided that in the presence of HCl, a chemical reaction occurred between CMC and PVA. In addition, the water uptake, solubility in water, and biodegradability of the films were found to be reduced significantly. With all of these results, in presence of HCl, a blend made up of CMC and PVA with a ratio 30:70 was optimized as a biodegradable packaging material. (C) 2015 Wiley Periodicals, Inc.
机译：这项研究的主要重点是用羧甲基纤维素（CMC）和聚乙烯醇（PVA）制备环保的可生物降解包装材料。通过改变含或不含盐酸的CMC与PVA的比例（00：100、30：70、50：50、70：30、100：00 w / w）来制备不同的共混膜。研究了薄膜的机械性能，包括拉伸强度（TS），断裂伸长率（Eb），吸水率和在水中的溶解度。还进行了土葬测试。制备的薄膜通过衰减全反射率（ATR）-傅立叶变换红外（FTIR）光谱，差示扫描量热法（DSC）和热重分析（TGA）进行表征。共混膜的最高TS和Eb值分别记录为19.52 MPa和34.52％。 ATR-FTIR光谱，DSC和TGA结果表明，在存在HCl的情况下，CMC和PVA之间发生化学反应。另外，发现膜的吸水率，在水中的溶解度和生物降解性显着降低。根据所有这些结果，在盐酸存在下，由CMC和PVA组成的比例为30:70的混合物被优化为可生物降解的包装材料。 （C）2015年Wiley Periodicals，Inc.

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