Simultaneous Spin Coating and Ring-Opening Metathesis Polymerization for the Rapid Synthesis of Polymer Films.
Simultaneous Spin Coating and Ring-Opening Metathesis Polymerization for the Rapid Synthesis of Polymer Films.
复制标题
同时旋涂和开环易位聚合用于快速合成聚合物薄膜。
DOI：
10.1021/acsami.4c00211
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发表时间：
2024
影响因子：
9.5
通讯作者：
Jennings,GKane
中科院分区：
文献类型：
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作者：
Parkerson,ZaneJ;Prozorovska,Liudmyla;Vasuta,MatthewP;Oddo,TylerD;Jennings,GKane
我们报告了一种通过将旋涂与开环复分解聚合（ROMP）相结合在基底上合成聚合物薄膜的高度受控技术，本文称为旋涂ROMP（scROMP）。 scROMP 方法将聚合物合成和沉积结合到一个过程中，可在 3 分钟内制造最大 36 cm2in 的薄膜，同时将溶剂使用量减少几个数量级。该方法可以将大量降冰片烯型分子转化为均聚物和无规共聚物，在多孔和无孔基材上形成均匀的薄膜。根据旋转速度和单体浓度，薄膜厚度可以从几百纳米到几十微米不等。所得聚合物具有高分子量 (>100 kDa) 和低多分散性 (PDI) (<1.2) 值，与溶液中制备的 ROMP 聚合物相似。我们还设计了一个模型来研究对流单体剥离和表面聚合物生长之间的平衡，从而可以确定 scROMP 的关键动力学参数。最后，将 scROMP 转化为多孔载体可以合成薄膜复合膜，该膜具有通过全蒸发使乙醇脱水的能力。
We report a highly controlled technique for the synthesis of polymer films atop a substrate by combining spin coating with ring-opening metathesis polymerization (ROMP), herein termed spin coating ROMP (scROMP). The scROMP approach combines polymer synthesis and deposition into one process, fabricating films of up to 36 cm2in under 3 min with orders-of-magnitude reduction in solvent usage. This method can convert numerous norbornene-type molecules into homopolymers and random copolymers as uniform films on both porous and nonporous substrates. Film thickness can be varied from a few hundred nanometers to a few tens of micrometers based on spin speed and monomer concentration. The resulting polymers possess highMW(>100 kDa) and low polydispersity (PDI) (<1.2) values that are similar to ROMP polymers made in solution. We also devise a model to investigate the balance between convective monomer spin-off and polymer growth from the surface, which allows the determination of critical kinetic parameters for scROMP. Finally, translation of scROMP to porous supports enables the synthesis of thin film composite membranes that demonstrate the ability to dehydrate ethanol by pervaporation.