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首页> 外文期刊>Journal of Applied Polymer Science >Compatibility study in natural rubber and maize starch blends
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Compatibility study in natural rubber and maize starch blends

机译：天然橡胶和玉米淀粉混合物的相容性研究

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摘要

Blends containing various ratios of natural rubber (NR) and maize starch (MS) were prepared on a two roll mill. The effect of starch contents on physico-mechanical properties and curing characteristics of the prepared blend vulcanizates was investigated. The data indicate poor mechanical properties, delayed cure rate index, and decreased maximum torque with increasing starch content in the blend formulation. This indicates that the interfacial interaction between the blend components was poor. Various contents of the compatibilizers, maleic acid anhydride (MAH) and glycidyl methacrylate (GMA), were mixed with the blend NR/MS (90/10). The effect of the compatibilizer contents on the physico-mechanical properties and curing characteristics of the binary blend was investigated. Compatibilized blends with GMA (1 phr) showed an improvement in the physico-mechanical properties in comparison with uncompatibilized blend samples. Blends with MAH exhibited higher modulus and hardness values with respect to GMA blends. The efficiency of the compatibilizers was also evaluated by studies of phase morphology (scanning electron microscope), Fourier transform infrared spectroscopy, and thermal stability (thermogravimetric analysis).
机译：在两辊磨机上制备包含各种比例的天然橡胶（NR）和玉米淀粉（MS）的共混物。研究了淀粉含量对制备的共混硫化橡胶的物理机械性能和固化特性的影响。数据表明，随着共混配方中淀粉含量的增加，机械性能变差，固化速率指数降低，最大扭矩降低。这表明共混物组分之间的界面相互作用差。将各种含量的增容剂马来酸酐（MAH）和甲基丙烯酸缩水甘油酯（GMA）与NR / MS（90/10）共混物混合。研究了相容剂含量对二元共混物物理力学性能和固化特性的影响。与不相容的混合物样品相比，与GMA（1 phr）相容的混合物显示出物理机械性能的改善。相对于GMA共混物，MAH共混物表现出更高的模量和硬度值。还通过研究相形态（扫描电子显微镜），傅立叶变换红外光谱和热稳定性（热重分析）来评估相容剂的效率。

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