Novel vinyl-co-ester polymers by ring opening polymerizations and metal catalyzed polymerizations

通过开环聚合和金属催化聚合制备新型乙烯基共酯聚合物

• 批准号: 21501319
• 负责人: Professorin Dr. Seema Agarwal
• 金额: --
• 依托单位: Arbeitsgruppe Makromolekulare Chemie II
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/21501319?language=en
• 关键词: Novel; vinyl; co; ester; polymers

The project aims at the generation of new materials by bringing polar ester linkages onto the vinyl polymer backbones (Figure 1) with modified physical and chemical properties besides having significant influence on their degradability behavior. Also, we aim at gaining basic understanding of their formation and structure-property-relationship studies in terms of the amount of the ester linkages and microstructure of copolymers and degradability (enzymatic and hydrolytic etc.), mechanical, optical and thermal properties of the resulting copolymers. For the purpose, 1. Combination of free radical ring opening polymerization and chain polymerization: Copolymerization of cyclic ketene acetals with vinyl monomers. 2. Combination of metal catalyzed ring opening polymerization of cyclic esters and vinyl monomers are proposed as synthetic strategies. Depending on the resulting physical and chemical properties these new materials can be substituted for the conventional polymers in various applications like encapsulants or drug carriers for biomedical applications, coating applications, formation of disintegrate thermosets and for the generation of aliphatic degradable ionomers as novel method with improved mechanical properties. They can also bring some specific advantages like introducing biodegradability into non-biodegradable materials and can improve thermal stability and impact behavior of polymers like PMMA, which is otherwise a brittle material and degrades by unzipping mechanism. The new materials could be of interest from after use degradability point-of-view also.

该项目旨在通过将极性酯键引入乙烯基聚合物主链（图1）来产生新材料，这些乙烯基聚合物主链具有改性的物理和化学性质，并且对其降解行为具有显着影响。此外，我们的目标是获得基本的了解，他们的形成和结构-性能-关系的研究方面的酯键和微观结构的共聚物和降解性（酶和水解等），所得共聚物的机械、光学和热性能。为此，1。自由基开环聚合和链式聚合的结合：环状乙烯酮缩醛与乙烯基单体的共聚。2.提出了金属催化环酯和乙烯基单体开环聚合的组合作为合成策略。根据所得的物理和化学性质，这些新材料可以在各种应用中取代常规聚合物，如用于生物医学应用、涂层应用、崩解热固性材料的形成的澄清剂或药物载体，以及作为具有改进的机械性能的新方法用于产生脂肪族可降解离聚物。它们还可以带来一些特定的优点，如将生物降解性引入不可生物降解的材料中，并且可以改善聚合物如PMMA的热稳定性和冲击行为，PMMA是脆性材料并且通过解链机制降解。从使用后降解性的角度来看，新材料也可能是令人感兴趣的。