Mechanical behavior dependency of the poly(N-isopropylacrylamide) hydrogel related to the amount of initiator, crosslinker, and nanoparticles was investigated. An experimental approach has been undertaken to observe these dependencies and assess the amount of initiator (ammonium persulfate), crosslinker (N, N′-methylene-bisacrylamide), and nanoparticles (graphene oxide) on the macroscopic responses of poly(N-isopropylacrylamide). Different amounts of initiator, crosslinker, and nanoparticle were used to manufacture specimens for the compression test. The specimens were subjected to compressive loading up to breakage to investigate the breaking behavior of poly(N-isopropylacrylamide). The responses of these specimens indicated that the mechanical behavior of poly(N-isopropylacrylamide) was highly nonlinear and depends on these ingredients. The mechanical responses of poly(N-isopropylacrylamide) were simulated using the ideal network model. The simulation results of the mathematical model substantially complied with the experimental data of poly(N-isopropylacrylamide). In addition, a more in-depth microstructural analysis was performed on these specimens. The analysis results allowed us to correlate the dependent amounts of the ingredients on the nonlinear, mechanical behavior of poly(N-isopropylacrylamide).

研究了聚（N-异丙基丙烯酰胺）水凝胶的机械行为依赖性与引发剂，交联剂和纳米颗粒的量。已经采取了一种实验方法来观察这些依赖性并评估引发剂（过硫酸铵），交联剂（N，N'-亚甲基-双丙烯酰胺）和纳米颗粒（氧化石墨烯）的数量对聚（N-异丙基丙烯酰胺）的宏观响应。使用不同量的引发剂，交联剂和纳米颗粒制造用于压缩测试的样品。对样品进行压缩加载直至断裂，以研究聚（N-异丙基丙烯酰胺）的断裂行为。这些样品的响应表明，聚（N-异丙基丙烯酰胺）的机械性能是高度非线性的，并取决于这些成分。使用理想网络模型模拟了聚（N-异丙基丙烯酰胺）的机械响应。数学模型的仿真结果与聚（N-异丙基丙烯酰胺）的实验数据基本吻合。另外，对这些样品进行了更深入的显微结构分析。分析结果使我们能够将成分的依赖量与聚（N-异丙基丙烯酰胺）的非线性机械性能相关联。