Cellulose solutions in dipolar aprotic solvents

Dibrova, A. K.; Khanchich, O. A.

doi:10.1134/s0965545x10120047

Cited by 1 publication

(2 citation statements)

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“…The dipolar aprotic solvents like DMAc, DMF, and N -methylpyrrolidone only swell the cellulose, but adding a small quantity of low-molecular-weight salts like LiCl will dissolve the cellulose. For example, according to Dibrova and Khanchich, in the case of the dissolution of cellulose in dimethylacetamide DMAc, two types of complexes can form between cellulose, low-molecular-weight salt, and solvent [ 20 ]. After dissolution, the cellulose solutions in DMAc with the addition of LiCl are stable up to 100 °C for a long time.…”

Section: Molecular Weights Particle Size Molecular Weight Distributio...mentioning

confidence: 99%

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Investigation of Cellulose-Based Materials Applied in Life Sciences Using Laser Light Scattering Methods

Grigoras

2024

Polymers

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This review emphasizes the practical importance of laser light scattering methods for characterizing cellulose and its derivatives. The physicochemical parameters like molecular weights, the radius of gyration, hydrodynamic radius, and conformation will be considered when the reproducibility of polymer behavior in solution is necessary for the subsequent optimization of the property profile of a designed product. Since there are various sources of cellulose, and the methods of cellulose extraction and chemical modification have variable yields, materials with variable molecular weights, and size polydispersity will often result. Later, the molecular masses will influence other physicochemical properties of cellulosic materials, both in solution and solid state. Consequently, the most rigorous determination of these quantities is imperative. In this regard, the following are presented and discussed in this review: the theoretical foundations of the light scattering phenomenon, the evolution of the specific instrumentation and detectors, the development of the detector-coupling techniques which include a light scattering detector, and finally, the importance of the specific parameters of polymers in solution, resulting from the data analysis of light scattering signals. All these aspects are summarized according to the chemical classification of the materials: celluloses, esters of cellulose, co-esters of cellulose, alkyl esters of cellulose, ethers of cellulose, and other heterogeneous cellulose derivatives with applications in life sciences.

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Section: Molecular Weights Particle Size Molecular Weight Distributio...mentioning

confidence: 99%

“…Even if cellulosic materials are used in the final applications as powders, films, or gels, the characterization of their solutions is equally important. Often, in solution, the nature of the solvent is the main considered factor [ 1 , 20 , 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Cellulose-Based Materials Applied in Life Sciences Using Laser Light Scattering Methods

Grigoras

2024

Polymers

View full text Add to dashboard Cite

show abstract

Cellulose solutions in dipolar aprotic solvents

Cited by 1 publication

References 7 publications

Investigation of Cellulose-Based Materials Applied in Life Sciences Using Laser Light Scattering Methods

Investigation of Cellulose-Based Materials Applied in Life Sciences Using Laser Light Scattering Methods

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