Structure and Properties of Polyoxymethylene/Silver/Maleic Anhydride-Grafted Polyolefin Elastomer Ternary Nanocomposites
文献类型： 外文期刊
作者： Liu, Yang 1 ; Zhang, Xun 1 ; Gao, Quanxin 1 ; Huang, Hongliang 1 ; Liu, Yongli 1 ; Min, Minghua 1 ; Wang, Lumin 1 ;
作者机构： 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Key Lab Ocean & Polar Fisheries, Minist Agr & Rural Affairs, Shanghai 200090, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Joint Lab Open Sea Fishery Engn, Qingdao 266237, Peoples R China
3.Hunan Xinhai Co Ltd, Hunan Engn Res Ctr Rope & Net, Yiyang 413100, Peoples R China
4.Huzhou Univ, Coll Life Sci, Huzhou 313000, Peoples R China
关键词： POM; POM; Ag nanocomposites; POM; Ag; MAH-g-POE ternary nanocomposites; mechanical properties; thermal stability; dynamic mechanical analysis
期刊名称：POLYMERS （ 影响因子：4.329； 五年影响因子：4.493 ）
ISSN：
年卷期： 2021 年 13 卷 12 期
页码：
收录情况： SCI
摘要： In the present study, silver (Ag) nanoparticles and maleic anhydride-grafted polyolefin elastomer (MAH-g-POE) were used as enhancement additives to improve the performance of the polyoxymethylene (POM) homopolymer. Specifically, the POM/Ag/MAH-g-POE ternary nanocomposites with varying Ag nanoparticles and MAH-g-POE contents were prepared by a melt mixing method. The effects of the additives on the microstructure, thermal stability, crystallization behavior, mechanical properties, and dynamic mechanical thermal properties of the ternary nanocomposites were studied. It was found that the MAH-g-POE played a role in the bridging of the Ag nanoparticles and POM matrix and improved the interfacial adhesion between the Ag nanoparticles and POM matrix, owing to the good compatibility between Ag/MAH-g-POE and the POM matrix. Moreover, it was found that the combined addition of Ag nanoparticles and MAH-g-POE significantly enhanced the thermal stability, crystallization properties, and mechanical properties of the POM/Ag/MAH-g-POE ternary nanocomposites. When the Ag/MAH-g-POE content was 1 wt.%, the tensile strength reached the maximum value of 54.78 MPa. In addition, when the Ag/MAH-g-POE content increased to 15wt.%, the elongation at break reached the maximum value of 64.02%. However, when the Ag/MAH-g-POE content further increased to 20 wt.%, the elongation at break decreased again, which could be attributed to the aggregation of excessive Ag nanoparticles forming local defects in the POM/Ag/MAH-g-POE ternary nanocomposites. Furthermore, when the Ag/MAH-g-POE content was 20 wt.%, the maximum decomposition temperature of POM/Ag/MAH-g-POE ternary nanocomposites was 398.22 degrees C, which was 71.39 degrees C higher than that of pure POM. However, compared with POM, the storage modulus of POM/Ag/MAH-g-POE ternary nanocomposites decreased with the Ag/MAH-g-POE content, because the MAH-g-POE elastomer could reduce the rigidity of POM.
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