Corrosion inhibition activity of a natural polysaccharide from Dysosma versipellis using tailor-made deep eutectic solvents

被引：2

作者：

Luo, Xiaohu ^{[1
,3
]}

Zhen, Deshuai ^{[1
,2
,3
]}

Deng, Qiuhui ^{[2
]}

Guo, Meng ^{[1
]}

Mao, Haili ^{[2
]}

Dai, Homg ^{[1
]}

Xie, Zhi-Hui ^{[4
]}

Zhong, Junbo ^{[5
]}

Liu, Yali ^{[3
]}

机构：

[1] Qiannan Normal Univ Nationalities, Engn Res Ctr Loss Efficacy & Anticorros Mat Guizho, Sch Chem & Chem Engn, Duyun 558000, Peoples R China

[2] Univ South China, Sch Publ Hlth, Hengyang Med Sch, Hengyang 421001, Peoples R China

[3] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Peoples R China

[4] China West Normal Univ, Coll Chem & Chem Engn, Chem Synth & Pollut Control Key Lab Sichuan Prov, Nanchong 637002, Peoples R China

[5] Sichuan Univ Sci & Engn, Sichuan Inst Higher Educ, Key Lab Green Chem, Zigong 637002, Peoples R China

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2024年 / 268卷

关键词：

Deep eutectic solvent; Polysaccharide; Corrosion inhibition; IN-VITRO ANTIOXIDANT; MILD-STEEL; CARBON-STEEL; GREEN; GLUCOMANNAN; EXTRACTION;

D O I：

10.1016/j.ijbiomac.2024.129220

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

In this work, a total of 18 types of choline chloride, betaine, and L-proline-based deep eutectic solvents (DESs) were synthesized to determine the extraction yield of a natural polysaccharide (PSA) from Dysosma versipellis using an ultrasound-assisted extraction method. Results indicate that the choline-oxalic acid-based DES has the best extraction yield for PSA due to the proper physical-chemical properties between PSA and DES. To evaluate the optimal extraction conditions, a response surface methodology was carried out. Under the optimal conditions, the extraction yield of PSA reaches 10.37 % (+/- 0.03 %), higher than the conventional extraction methods. Findings from FT-IR and NMR suggest that the extracted PSA belongs to a neutral polysaccharide with (1 -> 6)linked alpha- D -glucopyranose in the main chain. Interestingly, results from various electrochemical measurements show the extracted PSA exhibits excellent corrosion inhibition performance for mild steel (MS) in a 0.5 M HCl solution, with 90.8 % of maximum corrosion inhibition efficiency at 210 mg L -1 . SEM and XPS measurements reveal the formation of a protective layer on the MS surface. The adsorption behaviour of extracted PSA well obeys the Langmuir adsorption isotherm containing the chemisorption and physisorption. Additionally, theoretical calculations validate the experimental findings.

引用

页数：14