Synthesis of low-molecular weight itaconic acid polymers as nanoclay dispersants and dispersion stabilizers

被引：5

作者：

Bednarz, Szczepan ^{[1
]}

Bujok, Sonia ^{[2
]}

Mielczarek, Kacper ^{[1
]}

Swiergosz, Tomasz ^{[1
]}

Wierzbicki, Samuel ^{[1
]}

Konefal, Rafal ^{[2
]}

Konefal, Magdalena ^{[2
]}

Nevoralova, Martina ^{[2
]}

Pavlova, Ewa ^{[2
]}

Benes, Hynek ^{[2
]}

机构：

[1] Cracow Univ Technol, Fac Chem Engn & Technol, Warszawska 24, PL-31155 Krakow, Poland

[2] CAS AS CR, Inst Macromol Chem, Heyrovskeho Nom 2, Prague 16206 6, Czech Republic

来源：

POLYMER | 2023年 / 265卷

关键词：

Polyelectrolyte synthesis; Renewable polymer; Clay dispersant; CLAY-MODIFIED ELECTRODES; RADICAL POLYMERIZATION; NANOCOMPOSITE HYDROGELS; SUSPENSIONS; FRAGMENTATION; COPOLYMERS; EFFICIENCY; MECHANISM; KINETICS; MODE;

D O I：

10.1016/j.polymer.2022.125614

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Itaconic oligomers with an average molecular weight of Mn = 1500-2200 g/mol and different end-groups were prepared by 2,2 '-azobis(2-methyl-propionamidine) dihydrochloride (V-50) - induced radical polymerization of itaconic acid (IA) in aqueous solution at 65 degrees C for 24 h. Mercaptoethanol, thioglycerol, and sodium hypo -phosphite were used as chain transfer agents (CTA) with the molar ratio ranging from 30:3:1 to 30:3:4 of IA, V50, and CTA, respectively. The structure of the oligomers was confirmed by electrospray ionization mass spec-trometry (ESI-MS) and tandem mass spectrometry (ESI-MS/MS). The excellent dispersing efficiency of the oligomers at very low concentrations for Laponite (R) sols was proved by oscillatory rheology and small-angle X-ray scattering (SAXS) measurements.

引用

页数：9

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