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利用扫描电镜、红外光谱、元素分析仪、热分析及激光散射粒径分析仪等手段对合成得到的Ｆｅ３Ｏ４／Ｐ（ＳｔＮＩＰＡＭ）（ＰＳＮ） 和ＰＳＮＮ 微球的形貌、结构、磁响应性和热敏特性等进行了表征，结果表明微球的粒径分布呈正态分布，共聚物微球的Ｔｇ 随ＮＩＰＡＭ 组分的增加而升高，ＰＳＮ 和ＰＳＮＮ 微球均具有较强的磁响应性，其流体动力学粒径随温度的升高而减小．
The morphology, structure, magnetic reactivity of the synthesized PSNN and PSNN microspheres were characterized by scanning electron microscopy, infrared spectroscopy, elemental analysis, thermal analysis and laser scattering particle size analyzer And thermal properties were characterized. The results showed that the particle size distribution of microspheres was normal distribution. The Tg of copolymer microspheres increased with the increase of NIPAM composition. Both PSN and PSNN microspheres had strong magnetic response The hydrodynamic size decreases with increasing temperature.