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Synthetic Rubber with the Tensile Strength of Natural Rubber
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2022-03-08 , DOI: 10.1021/acsapm.1c01508 Seiichi Kawahara 1 , Hironari Nishioka 1 , Masaki Yamano 1 , Yoshimasa Yamamoto 2
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2022-03-08 , DOI: 10.1021/acsapm.1c01508 Seiichi Kawahara 1 , Hironari Nishioka 1 , Masaki Yamano 1 , Yoshimasa Yamamoto 2
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The preparation of synthetic rubber with tensile strength identical to that of natural rubber is a long-standing unsolved problem in chemistry despite extensive related research. Here, we prepare synthetic rubber with tensile strength identical to that of natural rubber as a result of our discovery that natural rubber is a naturally occurring nanocomposite with proteins and lipids. The synthetic rubber is prepared by chemically attaching nanoparticles onto microparticles of synthetic cis-1,4-polyisoprene dispersed in water as a colloidal dispersion, followed by drying to form an “island-nanomatrix structure” similar to that of natural rubber. The stress at break of synthetic cis-1,4-polyisoprene increases dramatically from 0.1 to 3.9 MPa. The cis-1,4-polyisoprene with an island-nanomatrix structure exhibits almost the same mechanical properties as natural rubber. In addition, the synthetic cis-1,4-polyisoprene with an island-nanomatrix structure is vulcanized in the conventional manner using sulfur, zinc oxide, a vulcanization accelerator, and stearic acid at 150 °C and 15 MPa for an optimal vulcanization time after mechanical mixing. The stress at break of the resulting vulcanized cis-1,4-polyisoprene with an island-nanomatrix structure is 35.2 MPa, which is higher than that of vulcanized natural rubber. The preparation of synthetic rubber with mechanical properties identical to those of natural rubber is achieved by the formation of an island-nanomatrix structure in the synthetic rubber and is demonstrated by the mechanical properties of the vulcanized synthetic rubber being identical to those of vulcanized natural rubber.
中文翻译：
具有天然橡胶抗拉强度的合成橡胶
尽管进行了广泛的相关研究，但制备具有与天然橡胶相同的拉伸强度的合成橡胶是化学中长期未解决的问题。在这里，我们制备了具有与天然橡胶相同的拉伸强度的合成橡胶，因为我们发现天然橡胶是一种含有蛋白质和脂质的天然纳米复合材料。合成橡胶是通过将纳米颗粒化学连接到分散在水中的合成顺-1,4-聚异戊二烯微粒上，形成胶体分散体，然后干燥形成类似于天然橡胶的“岛状纳米基体结构”。合成顺式-1,4-聚异戊二烯的断裂应力从 0.1 急剧增加到 3.9 MPa。顺式具有岛状纳米基体结构的-1,4-聚异戊二烯表现出与天然橡胶几乎相同的机械性能。此外，合成的具有岛-纳米基体结构的顺式-1,4-聚异戊二烯采用硫、氧化锌、硫化促进剂和硬脂酸在150℃和15MPa的条件下以常规方式硫化，达到最佳硫化时间。机械混合。所得硫化顺式的断裂应力具有岛-纳米基体结构的-1,4-聚异戊二烯为35.2 MPa，高于硫化天然橡胶。通过在合成橡胶中形成岛状纳米基体结构来制备具有与天然橡胶相同力学性能的合成橡胶，并通过硫化合成橡胶的力学性能与硫化天然橡胶相同来证明。
更新日期：2022-03-08
中文翻译：
具有天然橡胶抗拉强度的合成橡胶
尽管进行了广泛的相关研究，但制备具有与天然橡胶相同的拉伸强度的合成橡胶是化学中长期未解决的问题。在这里，我们制备了具有与天然橡胶相同的拉伸强度的合成橡胶，因为我们发现天然橡胶是一种含有蛋白质和脂质的天然纳米复合材料。合成橡胶是通过将纳米颗粒化学连接到分散在水中的合成顺-1,4-聚异戊二烯微粒上，形成胶体分散体，然后干燥形成类似于天然橡胶的“岛状纳米基体结构”。合成顺式-1,4-聚异戊二烯的断裂应力从 0.1 急剧增加到 3.9 MPa。顺式具有岛状纳米基体结构的-1,4-聚异戊二烯表现出与天然橡胶几乎相同的机械性能。此外，合成的具有岛-纳米基体结构的顺式-1,4-聚异戊二烯采用硫、氧化锌、硫化促进剂和硬脂酸在150℃和15MPa的条件下以常规方式硫化，达到最佳硫化时间。机械混合。所得硫化顺式的断裂应力具有岛-纳米基体结构的-1,4-聚异戊二烯为35.2 MPa，高于硫化天然橡胶。通过在合成橡胶中形成岛状纳米基体结构来制备具有与天然橡胶相同力学性能的合成橡胶，并通过硫化合成橡胶的力学性能与硫化天然橡胶相同来证明。
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