1.Huahao Yang, Xinyu Cao, Yongmei Ma, Jingjing An, Yucai Ke, Xiaoming Liu, Fosong Wang, Effect of Maleic Anhydride Grafted Polybutadiene on the Compaticility of Polyamide 66/Acrylonitrile-Butadiene-Styrene Copolymer Blend. Polymer Engineering And Science, 2012, 52, 481-488.

 Abstract:

The addition of maleic anhydride grafted polybutadiene (PB-g-MAH) can greatly improve the compatibility of polyamide 66 (PA66)/acrylonitrile-butadiene-styrene copolymer (ABS) blends. Unlike the commonly used compatibilizers in polyamide/ABS blends, PB-g-MAH is compatible with the ABS particles' core phase polybutadiene (PB), rather than the shell styrene-acrylonitrile (SAN). The compatibility and interaction of the components in the blends were characterized by Fourier transform-infrared spectra (FTIR), Molau tests, melt flow index (MFI), dynamic mechanical analyses (DMA), and scanning electron microscopic (SEM) observations. The results show that PB-g-MAH can react with the amino end groups in PA66 while entangle with the PB phase in ABS. In this way, the compatibilizer anchors at the interface of PA66/ABS blend. The morphology study of the fracture sections before and after tensile test reveals that the ABS particles were dispersed uniformly in the PA66 matrix and the interfacial adhesion between PA66 and ABS was increased significantly. The mechanical properties of the blends thus were enhanced with the improving of the compatibility.

 2.Huiling Chen, Xinyu Cao, Jingnan Zhang, Jingjing Zhang, Yongmei Ma, Guangqin Shi, Yucai Ke, Dewen Tong, Lei Jiang, Electrospun shape memory film with reversible fibrous structure. Journal of Materials Chemistry, 2012, 22, 22387-22391.

 Abatract:

A shape memory polymer film with a stable micro/nano-fibrous structure is prepared via electrospinning of a triethoxysilane end-capped precursor solution, followed by crosslinking. The fibrous structure is stable and reversible for at least three cycles of shape memory tests. The electrospun SMP film also exhibits consistently faster recovery than the bulk film.

 

3. Shuai Zhang, Yucai Ke, Xinyu Cao, Yongmei Ma, Fosong Wang, Effect of Al(2)O(3) fibers on the thermal conductivity and mechanical properties of high density polyethylene with the absence or presence of compatibilizer. Journal of Applied Polymer Science, 2012, 124, 4874-4881

 Abstract:

Alumina (Al2O3) fiber/high density polyethylene (HDPE) composites were prepared by molding injection with or without compatibilizer, in which, maleic anhydride-grafted polyethylene (PE-g-MA) and acrylic acid-grafted polyethylene (PE-g-AA) were used as the compatibilizers. The thermal conductivities of the composites were anisotropic and the conductivities in the injection direction of the samples were higher than those in perpendicular direction of the injection. The anisotropic thermal conductivity for Al2O3/PE-g-AA/HDPE was the most obvious and this composite also gave the best mechanical performance. The SEM and DMA test revealed that PE-g-AA was more effective than PE-g-MA in improving the matrix–filler interaction. The high interfacial interaction was more favorable for the viscous flow-induced fiber orientation, which resulted in the largest anisotropic degree of thermal conductivity of the Al2O3/PE-g-AA/HDPE among the studied composite.