Polyacrylamide has been grafted onto nanofibrillated cellulose (NFC-g-PAM) under mild conditions. This was accomplished by developing and optimizing an ultrasound assisted protocol in the presence of potassium persulfate initiator. The synthesis was optimized on the basis of maximizing grafting percentage and grafting efficiency by varying the initiator and monomer concentration. The data shows that ultrasound has a profound effect in promoting the grafting of PAM onto NFC. The intended grafting was confirmed and the properties of the new co-polymers were examined by elemental analyses, Fourier transform infrared spectroscopy, thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Intrinsic viscosity determinations in 0.1 M cupriethylenediamine solutions for the NFC-g-PAM copolymers and the starting NFC and PAM homopolymer revealed that grafting of PAM onto nanofibrillated cellulose has a profound effect on the hydrodynamic characteristics of the graft polymers.

聚丙烯酰胺已在温和条件下接枝到纳米原纤化纤维素（NFC-g-PAM）上。这是通过在过硫酸钾引发剂存在下开发和优化超声辅助方案来实现的。在通过改变引发剂和单体浓度来最大化接枝率和接枝效率的基础上，对合成进行了优化。数据表明，超声波在促进PAM嫁接到NFC上具有深远的影响。证实了预期的接枝反应，并通过元素分析，傅立叶变换红外光谱，热重分析（TGA）和扫描电子显微镜（SEM）检验了新共聚物的性能。0.1的本征粘度测定 用于NFC-g-PAM共聚物和起始NFC和PAM均聚物的M铜亚乙二胺溶液显示，PAM接枝到纳米原纤化纤维素上对接枝聚合物的水动力特性有深远的影响。