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发明授权
CN109096454B 端基功能化聚异戊二烯橡胶及其制备方法 有权

端基功能化聚异戊二烯橡胶及其制备方法
摘要：
本发明涉及一种端基功能化聚异戊二烯橡胶及其制备方法，属于高分子合成领域。本发明提供一种端基功能化聚异戊二烯橡胶的制备方法，所述制备方法包括如下步骤：1)将含羟基或羧基的异戊二烯衍生物通过烷基铝脱氢得到烷基铝保护的异戊二烯前体；2)极性嵌段共聚物的合成；3)制备中间产物；4)多肽修饰中间产物得末端功能化聚异戊二烯橡胶；所有反应均在在无水无氧环境中进行。本发明所得端基功能化聚异戊二烯橡胶具有高拉伸断裂强度(15MPa)和韧性(46.3MJ m‑3)，突出的拉伸断裂伸长率性(890％)和应变诱导结晶度(17％)；这些性能均可与未硫化的天然橡胶媲美。
摘要（英）：

The invention relates to end group functionalized polyisoprene rubber and a preparation method thereof, and belongs to the field of polymer synthesis. The preparation method of the end group functionalized polyisoprene rubber comprises the following steps: 1) dehydrogenating an isoprene derivative containing a hydroxyl group or a carboxyl group through alkyl aluminum to obtain an alkyl aluminum protected isoprene precursor; 2) synthesizing a polar block copolymer; 3) preparing an intermediate; 4) conducting polypeptide modification on the intermediate to obtain the end functionalized polyisoprene rubber. All reactions are conducted in the anhydrous oxygen-free environment. The end group functionalized polyisoprene rubber has high tensile strength (15 MPa) and toughness (46.3 MJ m^3), outstanding tensile elongation at break (890%) and strain-induced crystallization degree (17%). The properties are comparable to those of uncured natural rubber.

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