Bulk Depolymerization of Methacrylate Polymers via Pendent Group Activation.
Bulk Depolymerization of Methacrylate Polymers via Pendent Group Activation.
复制标题
通过侧基活化进行甲基丙烯酸酯聚合物的本体解聚。
DOI：
--
复制
发表时间：
2024
影响因子：
15
通讯作者：
Brent S. Sumerlin
中科院分区：
文献类型：
--
作者：
Rhys W Hughes;Megan E. Lott;Isabella S Zastrow;James B. Young;Tanmoy Maity;Brent S. Sumerlin
在这项研究中，我们提出了一种对通过常规自由基聚合合成的聚甲基丙烯酸甲酯（PMMA）共聚物进行解聚的有效方法。在聚合过程中引入低摩尔百分比的含邻苯二甲酰亚胺酯单体，可得到与未官能化的PMMA极为相似的无色透明聚合物，其能实现>95%转化为甲基丙烯酸甲酯（MMA）。值得注意的是，我们的无催化剂本体解聚方法表现出极高的效率，即使对于高分子量聚合物，包括超高分子量（10⁶ - 10⁷ g/mol）的PMMA，也能实现近乎定量的解聚。此外，这种方法产生的聚合物副产物分子量明显更低，这使其有别于从链端引发的本体解聚方法。再者，我们将研究扩展到聚甲基丙烯酸酯网络，展示了高度的解聚程度。这种创新的解聚策略为可持续聚甲基丙烯酸酯材料的开发提供了有前景的机会，在高分子科学的各种应用中具有巨大潜力。
In this study, we present an efficient approach for the depolymerization of poly(methyl methacrylate) (PMMA) copolymers synthesized via conventional radical polymerization. By incorporating low mol % phthalimide ester-containing monomers during the polymerization process, colorless and transparent polymers closely resembling unfunctionalized PMMA are obtained, which can achieve >95% reversion to methyl methacrylate (MMA). Notably, our catalyst-free bulk depolymerization method exhibits exceptional efficiency, even for high-molecular-weight polymers, including ultrahigh-molecular-weight (106-107 g/mol) PMMA, where near-quantitative depolymerization is achieved. Moreover, this approach yields polymer byproducts of significantly lower molecular weight, distinguishing it from bulk depolymerization methods initiated from chain ends. Furthermore, we extend our investigation to polymethacrylate networks, demonstrating high extents of depolymerization. This innovative depolymerization strategy offers promising opportunities for the development of sustainable polymethacrylate materials, holding great potential for various applications in polymer science.
影响因子：
7.015
作者：
Bossa, Ferdinando De Luca;Yilmaz, Gorkem;Matyjaszewski, Krzysztof
通讯作者：
Matyjaszewski, Krzysztof