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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of poly(vinyl alcohol)/gum tragacanth/cellulose nanocomposite film
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Preparation and characterization of poly(vinyl alcohol)/gum tragacanth/cellulose nanocomposite film

机译：聚（乙烯醇）/口香糖曲囊/纤维素纳米复合膜的制备及表征

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摘要

The effects of gum tragacanth obtained from two species of Astragalus Gossypinus (GT-G) and A. Parrowianus (GT-P) at two levels of 10% and 30% combined with cellulose nanofibers (CNF; 5%) on the physico-mechanical and structural properties of polyvinyl alcohol (PVA) nanocomposite film were investigated in this study. The water solubility and water vapor permeability of the films decreased with increasing the content of both gums, especially in the film containing 30% GT-P. The highest values of the tensile strength (39.3 MPa) and elongation at break (445%) belonged to the treatment containing 10% GT-P (90/10P/0). The FTIR and DSC analyses confirmed good interactions between GT and PVA in the 90/10P/0 treatment. SEM images indicated the dense structure of this film as the optimum treatment. Although the presence of CNF in the films containing GT-G improved some properties, especially the Young modulus, it impaired all the functional properties of nanocomposite GT-P film.
机译：本研究考察了从两种黄芪（Astragalus Gossypinus，GT-G）和A.Parrowianus（A.Parrowianus，GT-P）中提取的黄芩胶（gum tragacanth，GT-G）在10%和30%两种浓度下与纤维素纳米纤维（CNF；5%）结合对聚乙烯醇（PVA）纳米复合膜物理机械和结构性能的影响。随着两种胶含量的增加，薄膜的水溶性和水蒸气渗透性降低，尤其是在含有30%GT-P的薄膜中。拉伸强度（39.3MPa）和断裂伸长率（445%）的最高值属于含有10%GT-P（90/10P/0）的处理。FTIR和DSC分析证实在90/10P/0处理中GT和PVA之间存在良好的相互作用。SEM图像表明，该薄膜的致密结构是最佳处理方式。尽管CNF的存在改善了GT-G薄膜的一些性能，尤其是杨氏模量，但它损害了纳米复合GT-P薄膜的所有功能性。

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