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Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (1): 186.

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Compatibilization Effect of PTW on Polymer Blends of PA1010/PP

YANG Feng-Xia1,2, DU Rong-Ni2, LUO Feng2, ZHANG Xin-Lan2, YANG Jing-Hui2, FU Qiang2, ZHANG Qin2*   

  1. 1. School of Chemistry & Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China;
    2. College of Polymer Science and Engineering, State Key Laboratory of Polymer Engineering, Sichuan University, Chengdu 610065, China
  • Received:2009-04-03 Online:2010-01-10 Published:2010-01-10
  • Contact: ZHANG Qin. E-mail: qinzhang@scu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 50533050, 50873063, 20874064)资助.

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Abstract:

In order to improve the compatibility and the mechanical properties of Polyamide1010 and Polypropylene(PA1010/PP)blends, a novel reactive compatibilizer ethylene-butylacrylate-glycidyl methacrylate terpolymer(PTW) was used to compatibilize the blends. The compatibilizing effect of PTW on PA1010/PP blends was investigated by means of scaning electron microscopy(SEM), Fourier transform infrared(FTIR),mechanical testing and differential scaning calorimetry(DSC), respectively. It was found that with increasing the PTW content, the size of the dispersed PP particles decreased obviously, when the mass ratio of PA1010/PP/PTW is 70∶30∶7, the domain size showed a fine and uniform dispersion in the matrix,indicated PTW had an effective compatibilization effect on PA1010/PP blends. FTIR results show that the epoxy groups of PTW react with the end group of PA1010 in the blending process. DSC results show that the addition of PTW decreased the crystallization temperature of PA1010, indicate that PTW has an inhibition effect on the crystallization of PA1010. On the other hand, with increasing the mass fraction of PTW content, the crystallization temperature of PP became lower too, when the mass fraction of PTW was 5%, two crystalline peaks appeared, the crystallization of PP at the lower temperature should be assigned to homogeneous nucleation, the other one was heterogeneous nucleation. The appearance of howogennous nucleation demonstrated that the size of PP particles was very fine in the matrix from the other hand. When the mass fraction of PTW was 7%, the blend had the best comprehensive property and the izod impact strength of dried samples was 13.93 kJ/m2 , which is 2 times that for the binary PA1010/PP blend. Meanwhile, the flexural strength, tensile strength and modulus can be maintained at a relative high level. The compatibilization mechanism of PTW lied in the chemical interactions occuring between the end group of PA1010 and epoxy groups of PTW during the blending process, and the compatibility between PP and ethylene groups of PTW. And hense the addition of PTW decreased the interfacial tension and the domain size dramatically, improved the mechanical properties greatly.

Key words: Polyamide1010; Polypropylene; Ethylene-butylacrylate-glycidyl methacrylate terpolymer(PTW); Blend; Compatibilization mechanism

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