基于纤维素衍生的三醇单体的聚合物的受控酶合成:实验方法的设计
Cicely M Warne1,2, Sami Fadlallah3, Florent Allais3
1ACIB GmbH, Konrad-Lorenz-Strasse 20, 3430, Tulln an der Donau, Austria.
ChemSusChem
|March 28, 2024
概括
纤维素衍生的Triol-citro和二甲基酸盐的酶性多重凝聚产生了线性聚合物. 关键因素如反应剂比率和温度控制的分支,实现高分子重量与最小的分支进一步功能化.
科学领域:
- 聚合物化学 聚合物化学
- 生物催化剂是一种生物催化剂.
- 可持续材料 可持续材料
背景情况:
- 纤维素衍生的聚合物为聚合成提供了一个可持续的替代品.
- 酶聚合提供了区域选择性控制和较温和的反应条件.
- 在聚合成中控制分支对于量身定制材料特性至关重要.
研究的目的:
- 为了研究Triol-citro和二甲基酸盐的区域选择性酶性聚凝.
- 确定影响产生的聚烯分支行为的关键因素.
- 合成和表征具有进一步功能化的潜力的线性聚合物.
主要方法:
- 使用Candida antarctica Lipase B (CaLB) 的酶性多重凝结.
- 使用MODDE® Pro 13进行实验设计 (DoE) 方法,以优化反应参数.
- 使用2DNMR技术对合成聚合物进行表征,以确定分子量和分支程度.
主要成果:
- 成功合成了带有悬挂氧基组的多功能聚合物.
- 分支是最小的,最大观察到的分支程度为16%.
- 单体比率,温度和反应时间被确定为影响分支的重要因素.
- 达到数值平均分子量 (Mn) 高达13kDa,分支程度低于15%.
结论:
- 区域选择性酶性聚凝是一种有效的方法,用于从生物基聚合物合成线性聚.
- 该研究成功确定了控制聚分支的关键参数.
- 合成的线性聚合物具有悬挂氧基组,使进一步的化学修饰和应用开发成为可能.
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