当前位置: X-MOL 学术Appl. Clay. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Effect of surface property of halloysite on the crystallization behavior of PBAT
Applied Clay Science ( IF 5.6 ) Pub Date : 2018-06-01 , DOI: 10.1016/j.clay.2018.02.005
Xujuan Li , Daoyong Tan , Lan Xie , Hongjuan Sun , Shiyong Sun , Ganji Zhong , Penggang Ren

Abstract Halloysite (Hal), calcined Hal, and organosilane-modified Hal were used as filler for the preparation of Hal/PBAT nanocomposite. XRD, SEM, XPS, FTIR, DSC, POM, and Avrami, Jeziorny, Kissinger models were used to characterize the surface property of Hal and its effect on the crystallization morphology, structure and kinetics of nanocomposites. Hydrogen bonding, generated between NH2 or –OH groups on surface of organosilane-modified calcined Hal or calcined Hal and C (C O) O in ester of PBAT, efficiently enhanced the nucleation ability of Hal nanofiller, resulting in increment of crystallization temperature, decrease of half time, but retard the transport of PBAT molecules chains. The stronger the hydrogen bond was, the more remarkable such influence was. This study provides a promising approach of tailoring the surface characteristic of Hal to manipulate the crystallization of biodegradable aliphatic-aromatic polyesters, especially with extreme low loading of Hal nanofiller.

中文翻译:

埃洛石表面性质对PBAT结晶行为的影响

摘要 埃洛石(Hal)、煅烧Hal 和有机硅烷改性的Hal 被用作制备Hal/PBAT 纳米复合材料的填料。XRD、SEM、XPS、FTIR、DSC、POM 和 Avrami、Jeziorny、Kissinger 模型用于表征 Hal 的表面性质及其对纳米复合材料结晶形态、结构和动力学的影响。PBAT酯中有机硅烷改性的煅烧Hal或煅烧Hal与C(CO)O表面的NH2或-OH基团之间产生氢键,有效增强了Hal纳米填料的成核能力,导致结晶温度升高,降低半时间,但会延迟 PBAT 分子链的运输。氢键越强,这种影响越显着。
更新日期:2018-06-01
down
wechat
bug