This study focuses on the influence of peroxide type on the chemical composition, curing properties, and free-radical reactions of peroxide cured acrylonitrile-butadiene rubber (NBR). A novel perspective regarding peroxide curing as a surface modification method to control the formation of functional groups on cured rubber surfaces via the primary curing process is provided. During curing, the peroxide acts as a useful curing agent and as an efficient controller of functional group formation on rubber surfaces. Surface functionalization of NBR cured using peroxides containing structures such as alkyl, phenyl, and both groups was examined by X-ray photoelectron spectroscopy (XPS). The effects of different curing temperatures were also studied. Oxygen-containing functional groups were obtained on the cured NBR surfaces. Notably, NBR surfaces cured by the peroxide containing phenyl groups showed an increased abundance of oxygen-containing functional groups compared to those cured by the peroxide containing alkyl groups. The functional group formation mechanism on rubber surfaces is also discussed herein. This strategy offers opportunities for large-scale fabrication of versatile functional surfaces and thin films on rubber for various applications.

这项研究的重点是过氧化物类型对过氧化物硫化的丙烯腈-丁二烯橡胶（NBR）的化学组成，硫化性能和自由基反应的影响。提供了一种关于过氧化物固化的新观点，该过氧化物固化是一种表面改性方法，可通过初步固化工艺控制固化橡胶表面上官能团的形成。在固化过程中，过氧化物既可作为有用的固化剂，又可作为橡胶表面上形成官能团的有效控制剂。使用X射线光电子能谱（XPS）检查了使用含过氧化物（包括烷基，苯基和两个基团）的过氧化物固化的NBR的表面功能化情况。还研究了不同固化温度的影响。在固化的NBR表面上获得了含氧官能团。尤其，与用含烷基的过氧化物固化的NBR表面相比，用含苯基的过氧化物固化的NBR表面具有更高的含氧官能团。本文还讨论了橡胶表面上的官能团形成机理。该策略为在各种应用中在橡胶上大规模制造通用功能性表面和薄膜提供了机会。