较高极性的脲键给聚合物提供了较强的氢键和较好的热稳定性，并使这些聚合物在橡胶平台区有较高和变化较小的动态剪切模量。
The highly polar urea linkage offers stronger hydrogen bonding and higher thermal stability to the polymers, which introduces higher and flatter shear modulus the rubbery plateau.
采用溶液法，选用极性单体马来酸酐（MAH），在非隔氧条件下，以过氧化苯甲酰（ BPO）为引发剂对天然橡胶（NR）进行接枝改性。
The graft copolymerization of natural rubber(NR) and polar monomer maleic anhydride (MAH)in the presence of oxygen has been studied in toluene solution.
在某些高粘度和强极性的橡胶基体中，利用常规的熔体混合加工方法，FS可以直接解离成纳米单晶或晶束。
Blend process FS can be directly separated into nano-crystal or bundles in some polymer matrices with higher viscosity and stronger molecular polarity by conventional melt blend.
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