文献类型：期刊文献

英文题名：The Effect of alpha-Olefin-Maleic Anhydride Copolymer on the Rheological and Crystalline Properties and Microcellular Foaming Behavior of Polyamide 6

作者：Li, Shengnan Jiang, Tuanhui Zeng, Xiangbu Zhu, Nenggui Shen, Chao Gong, Wei Zhang, Chun He, Li

第一作者：Li, Shengnan

通信作者：Jiang, TH[1];He, L[1]

机构：[1]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550016, Peoples R China;[2]Guizhou Normal Univ, Inst Mat & Construct, Guiyang 550025, Peoples R China;[3]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550025, Peoples R China

第一机构：Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550016, Peoples R China

通信机构：corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550016, Peoples R China.

年份：2023

卷号：15

期号：9

外文期刊名：POLYMERS

收录：;EI(收录号：20232014102409);Scopus(收录号：2-s2.0-85159330783);WOS:【SCI-EXPANDED(收录号:WOS:000987572700001)】；

基金：This research was funded by the Research Institute Service Enterprise Action Plan Project of Guizhou Province (grant number [2018]4010), the Guizhou Province Science and Technology Planning Project (grant numbers GCC [2022]045 and [2017]5731), and the Science and Technology Program of Guiyang City, Guizhou Province (grant numbers [2019]14 and [2020]36).

语种：英文

外文关键词：polyamide 6; chain extender; rheological properties; foaming behavior; water absorption

摘要：The alpha-olefin-maleic anhydride copolymer DIA as a chain extender was used to modify polyamide 6 (PA6) during melt blending. The ability to modulate this modification for PA6 has been shown to be dependent on the effects of its content on the molecular weight distribution, rheological properties, crystalline properties, mechanical properties, and foaming behavior of foam samples. By increasing the DIA content, the viscoelasticity, water contact angle, and elongation at break improved as a result of a significant decrease in water absorption and melt flow rate. Compared with raw PA6, the modified PA6 presented a relatively wider molecular weight distribution. However, the crystallinity of modified PA6 samples decreased, the double melting peaks became one peak, and the a crystallites at 20.3 degrees gradually disappeared with increasing DIA content. The morphologies of composite foams with different contents were analyzed using scanning electron microscopy. It was found that the cell size of different PA6 samples decreased from 160 mu m to 83 mu m and the cell density increased from 1.1 x 10(5) cells/cm(3) to 5.9 x 10(5) cells/cm(3) when the content of DIA increased from 0 wt% to 5 wt%. Meanwhile, the cell morphology obviously improved and the cell size distribution became narrow. Thus, a preparation technology based on foaming materials with excellent performance, such as better bubble quality and low water absorption, was developed for further research and application.