Dipping product of natural rubber (NR) latex has superior comprehensive properties superior to those made from synthetic latex. Compared with synthetic latex, the component characteristics of NR show the existence of non-rubber components (NRC). In this paper, NRC, mainly proteins and phospholipids, are separately removed by enzyme treatment to study their effect on the film formation behavior of natural rubber latex. The changes of NR latex particles are in situ visualize by using freeze-drying SEM technology and AFM during the film formation process. The results demonstrate that contact, deformation, and coalescence of latex particles occur more readily after the removal of proteins and phospholipids. It shows that removing NRC can quicken NR film formation. However, the mechanical properties of the NR film decrease in the absence of NRC. Based on the research, a film formation mechanism for NR latex is proposed, which can provide a more insightful understanding toward the structure-property relationship of NR film. Graphical abstract Graphical abstract

中文翻译：

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非橡胶组分对天然胶乳成膜行为的影响

天然橡胶（NR）胶乳浸渍产品综合性能优于合成胶乳。与合成胶乳相比，NR的成分特性表明存在非橡胶成分（NRC）。本文通过酶处理分别去除NRC，主要是蛋白质和磷脂，研究它们对天然胶乳成膜行为的影响。通过冷冻干燥SEM技术和AFM在成膜过程中原位观察NR胶乳颗粒的变化。结果表明，在去除蛋白质和磷脂后，乳胶颗粒的接触、变形和聚结更容易发生。这表明去除NRC可以加速NR膜的形成。然而，在没有 NRC 的情况下，NR 薄膜的机械性能会降低。在此研究的基础上，提出了NR胶乳的成膜机理，可以更深入地理解NR膜的结构-性能关系。图形摘要图形摘要