In the recent years, several methods for producing cellulose nanofibers (CNF) have appeared. Depending on the type of treatment and its conditions, the source of cellulose and the fibrillation method, different properties and characteristics can be obtained. TEMPO-mediated oxidation has been extensively used for CNF production and it is considered as one of the most suitable treatments to obtain high-performance CNF with superior properties and reduced size. However, the recovery of the catalyst and its cost is still a challenge. In the recent years, the oxidation by means of ammonium persulfate (APS) has appeared as a potential alternative, although it is commonly used for cellulose nanocrystals production. The present work aims at comparing the properties of CNF obtained by means of TEMPO-mediated oxidation (TOCNF) and ammonium persulfate oxidation (APSCNF). For this, a similar oxidation degree was selected, adjusting the treatment conditions of both oxidative methods. The obtained results exhibited that similar properties can be obtained with different production costs associated. In addition, the APSCNF exhibited a significantly lower degree of polymerization and slightly higher transmittance, indicating the presence of higher crystalline regions. Finally, both types of CNF were tested over a recycled paper substrate, revealing that both APSCNF and TOCNF significantly increased the mechanical properties of paper with low effect on pulp drainability, representing a great advantage for the paper industry.

近年来，已经出现了几种生产纤维素纳米纤维（CNF）的方法。取决于处理类型及其条件，纤维素来源和原纤化方法，可以获得不同的性质和特性。TEMPO介导的氧化已广泛用于CNF生产，并且它被认为是获得具有卓越性能和减小尺寸的高性能CNF的最合适的处理方法之一。然而，催化剂的回收及其成本仍然是挑战。近年来，尽管过硫酸铵（APS）通常用于生产纤维素纳米晶体，但过硫酸铵（APS）的氧化似乎已成为一种潜在的替代方法。本工作旨在比较通过TEMPO介导的氧化（TOCNF）和过硫酸铵氧化（APSCNF）获得的CNF的性能。为此，选择了相似的氧化度，从而调整了两种氧化方法的处理条件。所获得的结果表明，可以以不同的生产成本获得相似的性能。另外，APSCNF表现出明显较低的聚合度和稍高的透射率，表明存在较高的结晶区。最后，两种类型的CNF均在再生纸基材上进行了测试，表明APSCNF和TOCNF均显着提高了纸张的机械性能，而对纸浆的可排水性影响很小，这对造纸行业而言是一个巨大的优势。选择了相似的氧化度，调整了两种氧化方法的处理条件。所获得的结果表明，可以以不同的生产成本获得相似的性能。另外，APSCNF表现出明显较低的聚合度和稍高的透射率，表明存在较高的结晶区。最后，两种类型的CNF均在再生纸基材上进行了测试，表明APSCNF和TOCNF均显着提高了纸张的机械性能，而对纸浆的可排水性影响很小，这对造纸行业而言是一个巨大的优势。选择了相似的氧化度，调整了两种氧化方法的处理条件。所获得的结果表明，可以以不同的生产成本获得相似的性能。另外，APSCNF表现出明显较低的聚合度和稍高的透射率，表明存在较高的结晶区。最后，两种类型的CNF均在再生纸基材上进行了测试，表明APSCNF和TOCNF均显着提高了纸张的机械性能，而对纸浆的可排水性影响很小，这对造纸行业而言是一个巨大的优势。APSCNF表现出明显较低的聚合度和稍高的透射率，表明存在较高的结晶区。最后，两种类型的CNF均在再生纸基材上进行了测试，表明APSCNF和TOCNF均显着提高了纸张的机械性能，而对纸浆的可排水性影响很小，这对造纸行业而言是一个巨大的优势。APSCNF表现出明显较低的聚合度和稍高的透射率，表明存在较高的结晶区。最后，两种类型的CNF均在再生纸基材上进行了测试，表明APSCNF和TOCNF均显着提高了纸张的机械性能，而对纸浆的可排水性影响很小，这对造纸行业而言是一个巨大的优势。