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与低聚介质相关的两亲性支化二氧化硅衍生物的合成与表征

Synthesis and characterization of amphiphilic branched silica derivatives associated with oligomeric medium.

作者信息

Davletbaev R S, Zaripov I I, Faizulina Z Z, Davletbaeva I M, Domrachova D S, Gumerov A M

机构信息

Kazan National Research Technical University after A.N. Tupolev-KAI 10 Karl Marx str. Kazan Republic of Tatarstan 420111 Russian Federation

Kazan National Research Technological University 68 Karl Marx str Kazan Republic of Tatarstan 420015 Russian Federation.

出版信息

RSC Adv. 2019 Jul 9;9(37):21233-21242. doi: 10.1039/c9ra03683k. eCollection 2019 Jul 5.

DOI:10.1039/c9ra03683k
PMID:35521337
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9066018/
Abstract

Amphiphilic branched silica derivatives associated with oligomeric medium (ASiP) were obtained using tetraethoxysilane, polyoxyethylene glycol and low molecular weight polydimethylsiloxane. The creation of a silica core was based on tetraethoxysilane hydrolysis and condensation reactions by using water and a potassium diethylene glycolate as the catalyst. These reactions proceeded with the sequential participation of polyoxyethylene glycol and polydimethylsiloxane in parallel transetherification reactions. Microporous polymer film based on 2,4-toluene diisocyanate and block copolymers of propylene and ethylene oxides with terminal potassium-alcoholate groups were modified by ASiP. It has been shown that ASiP at the phase interface between thermodynamically incompatible macrochains performs the function of a link. It leads to a significant increase of intermolecular interactions and the supramolecular organization of the modified microporous polymers.

摘要

使用四乙氧基硅烷、聚乙二醇和低分子量聚二甲基硅氧烷获得了与低聚物介质相关的两亲性支化二氧化硅衍生物（ASiP）。二氧化硅核的形成基于四乙氧基硅烷的水解和缩合反应，使用水和二乙二醇酸钾作为催化剂。这些反应在聚乙二醇和聚二甲基硅氧烷依次参与的平行醚交换反应中进行。基于2,4-甲苯二异氰酸酯以及具有末端醇钾基团的环氧丙烷和环氧乙烷嵌段共聚物的微孔聚合物膜用ASiP进行了改性。结果表明，ASiP在热力学不相容的大分子链之间的相界面处起到连接作用。它导致分子间相互作用显著增加以及改性微孔聚合物的超分子组织形成。

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