Microstructure, crystallization and dynamic mechanical properties of polyamide/clay nanocomposites after melt-state annealing

被引：11

作者：

Wan, Tong ^{[1
]}

Du, Tao ^{[1
]}

Wang, Biao ^{[1
]}

Zeng, Wei ^{[1
]}

Clifford, Mike ^{[2
]}

机构：

[1] Tianjin Univ Sci & Technol, Coll Mat Sci & Chem Engn, Tianjin 300457, Peoples R China

[2] Univ Nottingham, Fac Engn, Nottingham NG7 2RD, England

来源：

POLYMER COMPOSITES | 2012年 / 33卷 / 12期

关键词：

SILICATE NANOCOMPOSITES; POLYMER; BEHAVIOR; NYLON-6; MODEL;

D O I：

10.1002/pc.22359

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Polyamide 6/clay (PA/clay) nanocomposites produced by melt-compounding were treated under various melt-state annealing processes. The effect of melt-state annealing on the microstructure, crystallization, and dynamic mechanical properties was characterized by transmission electron microscope (TEM), modulated differential scanning calorimetry (MDSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and dynamic mechanical analysis (DMA). Clay layers were exfoliated in PA matrix. The crystalline transformation between a and ?-crystalline phase was virtually dependent on the annealing process and clay loading. After melt-state annealing between 230 and 250 degrees C, clay induced the appearance of a new endothermic peak in PA/clay. PA/clay after melt-state annealing exhibited a higher elastic modulus above Tg and a lower beta relaxation below Tg as compared with the non-annealed sample. FTIR analysis demonstrated that the melt-state annealing caused strong hydrogen bonding interaction of amide groups with clay layers. POLYM. COMPOS., 2012. (C) 2012 Society of Plastics Engineers

引用

页码：2271 / 2276

页数：6

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