Rheological properties of polyacrylates used as synthetic road binders
Rheological properties of polyacrylates used as synthetic road binders
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DOI：
10.1007/s00397-007-0250-3
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发表时间：
2008-09-01
期刊：
影响因子：
2.3
通讯作者：
Mohammed, Musarrat H.
中科院分区：
文献类型：
--
作者：
Airey, Gordon D.;Mohammed, Musarrat H.
大多数粘合剂和粘合剂，包括用于沥青混合物生产的沥青，目前是在原油精炼后从石化产品生产的。原油储量是一种有限的资源，这意味着将来可能需要从替代和可能的可再生资源中生产这些材料。这类合适的资源可包括多糖、植物油和蛋白质。本文论述了聚合物粘合剂的合成，从单体，在未来，可以来自可再生资源。这些粘合剂由不同分子量的聚丙烯酸乙酯（PEA）、聚丙烯酸甲酯（PMA）和聚丙烯酸丁酯（PBA）组成，它们分别由丙烯酸乙酯、丙烯酸甲酯和丙烯酸丁酯通过原子转移自由基聚合合成。这些粘合剂的流变性能通过使用动态剪切流变仪的振荡测试以及应力/应变、温度和频率扫描的组合来确定。结果表明，PEA可以被生产为具有类似于“软”100/150针入度级沥青的流变性能，PMA具有类似于“硬”10/20针入度级沥青的流变性能，而PBA由于其高粘性和低动态模量，不能单独用作粘合剂。合成的聚合物被认为是热流变简单的，和移位因子，用于产生动态模量主曲线，被发现适合阿耳忒弥斯函数。
Most adhesives and binders, including bitumen for asphalt mixture production, are presently produced from petrochemicals after the refining of crude oil. The fact that crude oil reserves are a finite resource means that in the future, it may become necessary to produce these materials from alternative and probably renewable sources. Suitable resources of this kind may include polysaccharides, plant oils and proteins. This paper deals with the synthesis of polymer binders from monomers that could, in future, be derived from renewable resources. These binders consist of polyethyl acrylate (PEA) of different molecular weight, polymethyl acrylate (PMA) and polybutyl acrylate (PBA), which were synthesised from ethyl acrylate, methyl acrylate and butyl acrylate, respectively, by atom transfer radical polymerisation. The rheological properties of these binders were determined by means of oscillatory testing using a dynamic shear rheometer and combinations of stress/strain, temperature and frequency sweeps. The results indicate that PEA can be produced to have rheological properties similar to that of 'soft' 100/150 penetration grade bitumen, PMA with similar rheological properties to that of 'hard' 10/20 penetration grade bitumen, while PBA, due to its highly viscous nature and low dynamic moduli, cannot be used on its own as a binder. The synthetic polymers were found to be thermo-rheologically simple, and the shift factors, used to produce the dynamic moduli master curves, were found to fit an Arrhenius function.