The study on the relationship between the molecular structures of chitosan derivatives and their hydrate inhibition performance

Li, Zhi; Zhang, Yue; Shen, Yimao; Yang, Xiaodeng; Li, Tianduo; Chen, Guangjin

doi:10.1016/j.molliq.2022.120007

Cited by 5 publications

(2 citation statements)

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“…The linear polysaccharide chitosan-polyglucosamine (1–4)-2-amino-B-D-glucose [ 93 , 94 , 95 ] and its synthetic derivatives carboxymethylchitosan and sulfonated chitosan [ 79 , 80 , 129 , 130 ] were studied in a methane hydration model and showed high efficiency. In that study [ 129 ], four chitosan derivatives were successfully synthesized, and their methane hydrate inhibition effects were compared with those of chitosan (CS) and carboxymethylchitosan (CMCS) ( Figure 14 , Table 4 ).…”

Section: Polysaccharides Are Promising “Green” Inhibitors Of Gas Hydr...mentioning

confidence: 99%

Polysaccharides Are Effective Inhibitors of Natural Gas Hydrate Formation

et al. 2023

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This review covers the types and applications of chemical inhibitors of gas hydrate formation in the oil and gas industry. The main directions of the development of new types of highly effective and environmentally safe “green” kinetic hydrate inhibitors (KHIs) based on biopolymers are analyzed. The structure, physicochemical properties, efficiency of gas hydrate formation inhibition, and commercial prospects of polysaccharides in preventing and controlling the formation of gas hydrates are considered. The criteria for their selection, current experimental data, and the mechanism of inhibition are presented. Recent research in the development of cost-effective, efficient, and biodegradable KHIs for industrial applications in the oil and gas industry is also presented.

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Section: Polysaccharides Are Promising “Green” Inhibitors Of Gas Hydr...mentioning

confidence: 99%

Polysaccharides Are Effective Inhibitors of Natural Gas Hydrate Formation

et al. 2023

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“…Among various medical dressings materials, chitosan based biological dressings have been one of the most widely studied and applied. Chitosan is a natural cationic polysaccharide generated by the deacetylation of chitin which is abundant in nature, and mostly comes from bacteria, fungi and the shells of shrimp and crab [24]. Chitosan can increase the network structure of wound tissue, increase collagen synthesis and enhance wound tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical and antibacterial properties of Graphene Oxide-Silver/Graphene Oxide/Chitosan composite wound dressing

Liu

Wang

et al. 2023

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Graphene oxide was prepared by the modified Hummers method and ultrasonic treatment, ammoniacal silver solution and glucose were added into graphene oxide suspension to prepare graphene oxide-silver (GO-Ag) nanoparticles. And then the achieved GO-Ag nanoparticles were incorporated into chitosan and graphene oxide to prepare graphene oxide-silver/graphene oxide /chitosan(GO-Ag/GO/CS) composites. The structure and properties of GO-Ag/GO/CS composite have been investigated by XRD, IR, TG, Tensile test, cytotoxicity test and antibacterial test. XRD and IR analysis indicated that GO-Ag was successfully compounded with graphene oxide and chitosan, the structure of GO-Ag was unchanged after being incorporation. Tensile test showed that the incorporation of graphene oxide into chitosan matrix can effectively improve the tensile strength of GO-Ag/GO/CS composite, especially the wet-state tensile strength. When incorporated of 4wt% GO into chitosan matrix, the wet-state tensile strengths of GO-Ag/GO/CS were improved by 214.3% compared with chitosan matrix. Thermogravimetric analysis indicated that the incorporation of graphene oxide has a slight effect on the thermal stability of CS. The results of cytotoxicity test showed that the cytotoxicity levels of GO-Ag/GO/CS composites were all in the range of non-cytotoxic when the dosages of GO-Ag were changing from 3.0 mg to 6.0 mg, which satisfied the safety standards of biomaterials. The bacteriostatic rate of GO-Ag/GO/CS-5 group (contain 5mg GO-Ag) against Staphylococcus aureus can reach 98.31%, showing excellent bacteriostatic effect, which could be used for further experimental study.

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