combination of (1) and (2).
可以用如下三种方法将所需要的活性官能团引入到聚合物主链上：(1)在合成主链聚合物时通过带有所需官能团的单件的均聚或共聚，使聚合物带上官能团；(2)将预先制成的未功能化的主链聚合物进行化学改性；(3)将(1)和(2)两种方法结合起来。”
Each of the two approaches has its own advantages and disadvantages, and one approach may be preferred for the preparation of a particular functional polymer when the other would be totally impractical.
两种途径中的每一种都有自身的优点和缺点，对特殊功能聚合物的制备而言，所选的方法或许是合适的，而另一种方法无法实现。
The choice between the two ways to the synthesis of functionalized polymers depends mainly on the required chemical and physical properties of the support for a specific application.
功能聚合物合成的两种方法中，如何选择主要取决于特殊应用要求的主链聚合物的化学和物理性质。
Usually the requirements of the individual system must be thoroughly examined in order to take full advantage of each of the preparative techniques. 必须考虑不同体系的要求来充分利用不同制备方法。
Rapid progress in the utilization of functionalized polymeric materials has been noted in the recent past.
近年来，功能化聚合物材料的使用方面有了飞速的发展。
Interest in the field is being enhanced due to the possibility of creating systems that combine the unique properties of conventional active moieties and those of high molecular weight polymers.
由于能够制造出兼有活性官能团特性和高分子量聚合物性能的功能聚合物-所以人们对(功能聚合物)这个领域的兴趣与日俱增。
The successful utilization of these polymers are based on the physical form, solvation behavior, porosity, chemical reactivity and stability of the polymers.
这些聚合物的成功利用主要基于功能聚合物的物理形态，溶液行为，空隙率，化学活性及稳定性。
The various types of functionalized polymers cover a broad range of chemical applications, including the polymeric reactants, catalysts, carriers, surfactants, stabilizers, ion-exchange resins, etc.
功能聚合物类型覆盖化学应用的各个领域，包括聚合物试剂，催化剂，载体，表面活性剂，稳定剂，离子交换树脂等。
In a variety of biological and biomed