Emulsion polymerization provides a sustainable way to produce latex polymers for coatings and adhesives thanks to the use of water as a dispersion medium. This synthesis approach can be even more attractive if synthetic surfactant can be replaced by biobased solid particles as a stabilizer, through what is known as a “Pickering effect”. Herein, latex dispersions with solid content up to 35 wt% were successfully produced by emulsion polymerization using starch nanocrystals (SNCs) as a sole stabilizer and H₂O₂/citric acid as a redox-initiator. The effect of the SNC modification with vinyltriethoxysilane (VTES) on the colloidal properties of the polymer dispersion and performance of the resulting nanocomposite film were investigated. As an application of this approach, pressure-sensitive adhesive (PSA) dispersions have been prepared via Pickering emulsion polymerization in the presence of 8 wt% SNCs. The use of VTES-SNCs has a beneficial impact on the performance of PSAs with improved peel strength and wettability. The possibility to use SNCs as a stabilizer to replace synthetic surfactants in emulsion polymerization opens new avenues for the application of SNCs as biobased Pickering stabilizers to produce latex for coatings, adhesives, inks, and textiles.

由于使用水作为分散介质，乳液聚合为生产用于涂料和粘合剂的胶乳聚合物提供了一种可持续的方法。如果合成表面活性剂可以通过生物基固体颗粒作为稳定剂来替代，那么这种合成方法可能会更具吸引力。本文中，通过使用淀粉纳米晶体（SNC）作为唯一稳定剂和H ₂ O _2的乳液聚合成功地生产了固含量高达35 wt％的乳胶分散体。/柠檬酸作为氧化还原引发剂。研究了用乙烯基三乙氧基硅烷（VTES）进行SNC改性对聚合物分散体胶体性能和所得纳米复合膜性能的影响。作为该方法的一种应用，已经在8 wt％SNC的存在下通过Pickering乳液聚合制备了压敏胶粘剂（PSA）分散体。VTES-SNC的使用对PSA的性能具有有益的影响，并具有改善的剥离强度和润湿性。在乳液聚合中使用SNC作为稳定剂代替合成表面活性剂的可能性为将SNC用作生物基Pickering稳定剂以生产涂料，粘合剂，油墨和纺织品的胶乳开辟了新途径。