Abstract A new hybrid waterborne polyurethane (WPU) was successfully synthesized by emulsion polymerization from hydroxyl telechelic natural rubber (HTNR) and hydroxylated rubber seed oil (HRSO) at 50:50 M ratio as the polyol with grafted acrylate. The morphology of WPU was characterized by TEM, and its chemical structure was confirmed by FT-IR spectroscopy. The WPU had a good stability with total solids content of about 16 % and gave good film formation. The polarity and mechanical properties were improved by grafting BA/MMA co-monomer onto the WPU. The effects of the BA/MMA proportion were investigated. The new hybrid WPU-g-P(BA/MMA) demonstrated good dispersion and the particle size slightly increased with proportion of BA/MMA. The mechanical properties of the hybrid WPU-g-P(BA/MMA) films were studied from their stress-strain curves. The surface wetting and adhesive strength tended to increase with the proportion of BA/MMA in grafting. The results demonstrate a new way to utilize renewable resources in the form of a novel hybrid polyurethane, supporting the concept of eco-friendly materials in green coating applications.

中文翻译：

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由天然橡胶和橡胶籽油合成的新型混合水性聚氨酯涂料接枝丙烯酸酯

摘要 以羟基遥爪天然橡胶（HTNR）和羟基化橡胶籽油（HRSO）为多元醇，以50:50 M的比例通过乳液聚合，成功合成了一种新型杂化水性聚氨酯（WPU）。WPU的形貌通过TEM表征，其化学结构通过FT-IR光谱确定。WPU 具有良好的稳定性，总固体含量约为 16%，并具有良好的成膜性。通过将 BA/MMA 共聚单体接枝到 WPU 上改善了极性和机械性能。研究了BA/MMA比例的影响。新型杂化 WPU-gP(BA/MMA) 表现出良好的分散性，粒径随着 BA/MMA 的比例略有增加。从它们的应力-应变曲线研究了混合 WPU-gP(BA/MMA) 薄膜的机械性能。随着接枝中BA/MMA的比例增加，表面润湿和粘合强度有增加的趋势。结果展示了一种以新型混合聚氨酯形式利用可再生资源的新方法，支持绿色涂料应用中环保材料的概念。