在改性聚合物的羧基酸性基团、碱性基团和接枝环糊精之间的共同作用，可以为膜、织物、纤维或其它的聚合物结构提供有效的阻隔性能。
The cooperation between the modified polymer's carboxylic acidic groups, basic groups and grafted cyclodextrin can provide active barrier properties to a film, web, fiber or other polymer structure.
R基团赋予氨基酸物理化学特性，例如极性（亲水性和疏水性）以及电荷（酸性或正电荷，碱性或负电荷）。
The R-groups give the amino acids their physical-chemical characteristics such as polarity (hydrophobic or hydrophilic) and charge (acidic or positive versus basic or negative).
为了改性具有芳烃基团的有机高分子材料，用苯甲酸改性碱性钙基膨润土制备了苯甲酸有机膨润土。
In order to modify aromatic polymer, benzoic acid-bentonite was synthesized by treating alkaline Ca-bentonite with Ben - zoic acid.
结果表明，经微波加热处理后，活性炭表面酸性基团分解，同时碱性特征增强。
The results show that after microwave treatment, the surface acidic groups are removed due to their decomposition, and the basic characteristic of the activated carbon becomes prominent.
探讨碱性、溶剂极性、离去基团、吸电子基团、亲核试剂的亲核性对反应影响。
There are impact factor to be discussed such as solvent polarity, nucleofuge, attract electron group the nunucleophilicity of nucleophilic reagent.
探讨碱性、溶剂极性、离去基团、吸电子基团、亲核试剂的亲核性对反应影响。
There are impact factor to be discussed such as solvent polarity, nucleofuge, attract electron group the nunucleophilicity of nucleophilic reagent.
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