State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China; School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China.
School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China; Department of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China.
Ultrason Sonochem. 2021 Apr;72:105447. doi: 10.1016/j.ultsonch.2020.105447. Epub 2020 Dec 28.
Ultrasonic treatment can improve the compatibility between a hydrophobic material and a hydrophilic polymer. The light transmittance, crystalline structure, microstructure, surface morphology, moisture barrier, and mechanical properties of a composite film with or without ultrasonication were investigated. Ultrasound increases the film's light transmittance, resulting in a film that has good transparency. Ultrasonication did not change the crystalline structure of the polymer film, but promoted V-type complex formation. The surface of the film became smooth and homogeneous after the film-form suspension underwent ultrasonic treatment. Compared to the control film, after ultrasonication at 70% amplitude with a duration of 30 min, the average roughness and maximum roughness declined from 212 nm to 17.6 nm and from 768.7 nm to 86.5 nm, respectively. The composite film with ultrasonication exhibited better tensile and moisture barrier properties than the nonsonicated film. However, long-term and strong ultrasonication will destroy the polymer structure to some extent.
超声处理可以改善疏水性材料与亲水性聚合物之间的相容性。研究了经过或未经超声处理的复合膜的透光率、结晶结构、微观结构、表面形貌、防潮性和力学性能。超声处理提高了薄膜的透光率，使薄膜具有良好的透明度。超声处理并没有改变聚合物薄膜的结晶结构，但促进了 V 型复合物的形成。薄膜形成悬浮液经过超声处理后，表面变得光滑均匀。与对照薄膜相比，在 70%振幅下超声处理 30 分钟后，平均粗糙度和最大粗糙度分别从 212nm 降至 17.6nm 和从 768.7nm 降至 86.5nm。经过超声处理的复合膜的拉伸性能和防潮性能均优于未经超声处理的薄膜。然而，长期和强烈的超声处理会在一定程度上破坏聚合物结构。
