Kinetic comparison of isomeric oligo(ethylene oxide) (meth)acrylates: Aqueous polymerization of oligo(ethylene oxide) methyl ether methacrylate and methyl 2‐(oligo(ethylene oxide) methyl ether)acrylate macromonomers
Kinetic comparison of isomeric oligo(ethylene oxide) (meth)acrylates: Aqueous polymerization of oligo(ethylene oxide) methyl ether methacrylate and methyl 2‐(oligo(ethylene oxide) methyl ether)acrylate macromonomers
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DOI：
10.1002/pol.20220086
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发表时间：
2022-04
影响因子：
3.4
通讯作者：
Michael R. Martinez;Sylwia Dworakowska;Adam Gorczyński;Grzegorz Szczepaniak;Ferdinando de Luca Bossa;K. Matyjaszewski
中科院分区：
文献类型：
--
作者：
Michael R. Martinez;Sylwia Dworakowska;Adam Gorczyński;Grzegorz Szczepaniak;Ferdinando de Luca Bossa;K. Matyjaszewski
光诱导能量/电子转移-可逆加成-断裂链转移（PET-RAFT）寡聚物的聚合甲基丙烯酸环氧乙烷单甲醚（OEOMA，也称为聚[乙二醇]甲基醚甲基丙烯酸酯，PEGMA）和异构体甲基2-（低聚（环氧乙烷）甲基醚）丙烯酸酯（2 OEOAM）在水性介质中进行OEO平均聚合度为22或45的大分子单体以提供单体结构对通过RAFT接枝1的影响的深入了解，1-二取代丙烯酸大分子单体。所有四种单体的聚合达到几乎定量的转化率。在相同的单体类别中，较长的大分子单体比较短的大分子单体聚合更快。α位的OEO侧链（即，2-）与甲基丙烯酸酯的OEO酯侧链相比，丙烯酸酯异构体的位置显著减慢RAFT聚合。
The photoinduced energy/electron transfer‐reversible addition‐fragmentation chain transfer (PET‐RAFT) polymerizations of oligo(ethylene oxide) monomethyl ether methacrylate (OEOMA, also known as poly[ethylene glycol] methyl ether methacrylate, PEGMA) and isomeric methyl 2‐(oligo(ethylene oxide) methyl ether)acrylate (2OEOAM) macromonomers with OEO average degree of polymerization of 22 or 45 were conducted in aqueous media to provide insight into the effect of monomer structure on grafting‐through RAFT of 1,1‐disubstituted acrylic macromonomers. The polymerizations of all four monomers reached nearly quantitative conversion. The longer macromonomers polymerized faster than the shorter ones within the same monomer class. The OEO side chain at the α (i.e., 2‐) position of isomeric acrylates significantly slowed RAFT polymerization in comparison with OEO ester side chain of methacrylates.