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The gelation behaviors of the reactive blends of nylon1212 and functional elastomer

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Abstract

Studies on the gelation behaviors of the reactive blends of nylon1212 and functional elastomer were carried out. The results show that the curves of the storage modulus(G′)–frequency (ω) exhibit a gel plateau in the low ω region, and the transition from liquid-like to solid-like viscoelastic behaviors emerges with the concentration of SEBS-g-MA increasing. There exist the gelation behaviors in the blending process similar to those of crosslinking polymer. Based on Winter’s method, the gel point of blends is determined to be, φg = 17.45 wt%, and the corresponding value of tanδ is 1.44. The gel index n calculated is 0.61 and the gel strength Sg is 1.08 × 104 Pa s0.61. However, the non-reactive blends of nylon1212 and elastomer have no emergence of gelation behaviors. The morphology analysis shows that the gel point for the reactive blends is a threshold of cocontinuous morphology, and morphology analysis can also be a method to determine the gel point.

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Authors and Affiliations

  1. College of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China

    Wanjie Wang, Yanxia Cao & Jingwu Wang

  2. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China

    Qiang Zheng

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  1. Wanjie Wang
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  2. Yanxia Cao
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  3. Jingwu Wang
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  4. Qiang Zheng
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Correspondence to Wanjie Wang.

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Wang, W., Cao, Y., Wang, J. et al. The gelation behaviors of the reactive blends of nylon1212 and functional elastomer. J Mater Sci 43, 5755–5762 (2008). https://doi.org/10.1007/s10853-008-2885-6

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