申请人:Massachusetts Institute of Technology
公开号:US11083690B2
公开(公告)日:2021-08-10
Enteric elastomers and related methods are generally provided. In some embodiments, the enteric elastomer is a polymer composite. Certain embodiments comprise a polymer composite in which hydrogen bonds within two carboxyl group-containing polymers cross-link the polymer networks into an elastic and pH-responsive polymer composite. Advantageously, this polymer composite has the capacity of being stable and elastic in an acidic environment such as that of the stomach but can be dissolved in a neutral pH environment such as that of the small and large intestines. In some embodiments, the polymer composites described herein comprise a mixture of two or more polymers with carboxyl functionality such that the two or more polymers form hydrogen bonds. In certain embodiments, the polymer composite has both enteric and elastic properties.
一般提供肠道弹性体和相关方法。在某些实施方案中,肠道弹性体是一种聚合物复合材料。某些实施方案包括一种聚合物复合材料,其中两种含羧基的聚合物内的氢键将聚合物网络交联成弹性和 pH 响应性聚合物复合材料。有利的是,这种聚合物复合材料在胃等酸性环境中具有稳定性和弹性,但在小肠和大肠等中性 pH 环境中可以溶解。在某些实施方案中,本文所述的聚合物复合材料包括两种或两种以上具有羧基官能团的聚合物的混合物,从而使两种或两种以上聚合物形成氢键。在某些实施方案中,聚合物复合材料同时具有肠道特性和弹性特性。