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Synthesis of linear and branched hydrophobically associating multiblock copolymers via a one-pot process
Journal of Polymer Research ( IF 2.8 ) Pub Date : 2020-07-06 , DOI: 10.1007/s10965-020-02182-6
Perfecto Ascencio Carvente , Hortensia Maldonado Textle , Guillermo Soriano Moro , Claudia Cecilia Rivera Vallejo , Valeria González Coronel , Enrique Javier Jiménez Regalado , Claude St Thomas

The synthesis of linear and branched hydrophobically water soluble (co) polymers composed of acrylamide (AM), lauryl acrylate (LA) and N,N′-methylenebis (acrylamide) was carefully carried out via a one-pot process using the reversible addition-fragmentation chain transfer (RAFT) polymerization in aqueous media. The polymerization reactions were triggered out by sequential addition of monomers in the absence of surfactant through thermal initiation using 4,4′-azobis(4-cyanopentanoic acid)-ACPA as initiator. For understanding the influence of both hydrophobic and crosslinking agent on the structure and rheological properties thus the synthesized polymers were thoroughly characterized. Size exclusion chromatography (SEC), nuclear magnetic resonance (NMR) and dynamic light scattering (DLS) analyses demonstrated the insertion of hydrophobic block inside the polymeric chains. Further, the rheological studies confirmed the influence of both crosslinking agent and hydrophobic block inserted within the backbone polymers on the thickening properties of copolymers obtained in each step.



中文翻译:

通过一锅法合成直链和支链疏水缔合多嵌段共聚物

由丙烯酰胺(AM),丙烯酸月桂酯(LA)和N,N组成的直链和支链疏水性水溶性(共)聚合物的合成使用水介质中的可逆加成-断裂链转移(RAFT)聚合,通过一锅法小心地进行了'-亚甲基双(丙烯酰胺)的制备。在不存在表面活性剂的情况下通过使用4,4'-偶氮二(4-氰基戊酸)-ACPA作为引发剂通过热引发依次加入单体来引发聚合反应。为了理解疏水剂和交联剂对结构和流变性质的影响,因此对合成的聚合物进行了彻底的表征。尺寸排阻色谱(SEC),核磁共振(NMR)和动态光散射(DLS)分析表明,疏水性嵌段在聚合物链中的插入。进一步,

更新日期:2020-07-06
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