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首页> 外文期刊>RSC Advances >Bio-elastomer nanocomposites reinforced with surface-modified graphene oxide preparedvia in situcoordination polymerization
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Bio-elastomer nanocomposites reinforced with surface-modified graphene oxide preparedvia in situcoordination polymerization

机译：生物弹性体纳米复合材料加强了表面改性的石墨烯氧化物制备via，在土油聚合中

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摘要

This article proposes a method to produce bio-elastomer nanocomposites, based on polyfarnesene or polymyrcene, reinforced with surface-modified graphene oxide (GO). The surface modification is performed by grafting alkylamines (octyl-, dodecyl-, and hexadecylamine) onto the surface of GO. The successful grafting was confirmedviaspectroscopic (FTIR and Raman) and X-ray diffraction techniques. The estimated grafted amines appear to be around 30 wt%, as calculatedviathermogravimetric analysis, increasing the inter-planar spacing among the nanosheets as a function of alkyl length in the amine. The resulting modified GOs were then used to prepare bio-elastomer nanocompositesvia in situcoordination polymerization (using a ternary neodymium-based catalytic system), acting as reinforcing additives of polymyrcene and polyfarnesene. We demonstrated that the presence of the modified GO does not affect significantly the catalytic activity, nor the microstructure-control of the catalyst, which led to highcis-1,4 content bio-elastomers (>95%). Moreover, we showviarheometry that the presence of the modified-GO expands the capacity of the elastomer to store deformation or applied stress, as well as exhibit an activation energy an order of magnitude higher.
机译：本文提出了一种生产生物弹性体纳米复合材料的方法，基于聚氟烯或多氟烯，用表面改性的石墨烯（GO）加强。通过将烷基胺（辛基 - ，十二烷基 - 和十六烯胺）接枝到去的表面上进行表面改性。成功的接枝是确认viaspectroscopic（FTIR和拉曼）和X射线衍射技术。估计的接枝胺似乎约为30wt％，如钙质热重量分析，随着胺中的烷基长度的函数增加纳米片之间的平面间距。然后使用所得改性的GOS制备生物弹性体纳米复合体（使用三元钕类催化系统）制备生物弹性体纳米复合状体系（使用三元钕类催化系统），作为增强金属烯和聚氟烯的增强剂。我们证明，改性的液体的存在不会显着影响催化活性，也不会影响催化剂的微观结构控制，其导致高基-1,4含量生物弹性体（> 95％）。此外，我们展示了改性 - 去的存在，扩大了弹性体存储变形或施加应力的容量，以及表现出较高量的激活能量。

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