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Cellulose and Pectic Polysaccharides

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Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
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Compared study on the cellulose/CaCO3 composites via microwave-assisted method using different cellulose types.

Ming-Guo Ma¹, Lian-Hua Fu¹, Run-Cang Sun²

¹Institute of Biomass Chemistry and Technology, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, PR China.

Carbohydrate Polymers

|April 23, 2014

Summary

This summary is machine-generated.

The type of cellulose significantly impacts cellulose/calcium carbonate (CaCO3) composite microstructure and morphology. Microcrystalline cellulose yields better crystallinity and distinct microspheres compared to alkali extraction cellulose.

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Area of Science:

Materials Science
Nanotechnology
Polymer Chemistry

Background:

Cellulose and calcium carbonate (CaCO3) composites are of interest for various applications.
Controlling the synthesis of these composites is crucial for tailoring their properties.
Different cellulose sources can influence composite formation and characteristics.

Purpose of the Study:

To investigate the effect of different cellulose types on cellulose/CaCO3 composite properties.
To compare composites synthesized using alkali extraction cellulose and microcrystalline cellulose.
To analyze the microstructure, morphology, and crystallinity of the resulting composites.

Main Methods:

Microwave-assisted synthesis of cellulose/CaCO3 composites.
Utilizing two distinct cellulose sources: alkali extraction cellulose and microcrystalline cellulose.
Characterization of composite microstructure, morphology, crystallinity, and Raman spectra.

Main Results:

Cellulose type significantly influences the microstructure and morphology of cellulose/CaCO3 composites.
Composites comprised pure phase CaCO3 (calcite) and cellulose.
Microcrystalline cellulose resulted in higher crystallinity and CaCO3 microspheres, unlike the fiber-like structures from alkali extraction cellulose.

Conclusions:

The choice of cellulose type is critical for the successful formation and specific characteristics of cellulose/CaCO3 composites.
Microcrystalline cellulose offers advantages in achieving higher crystallinity and unique morphologies.
Understanding these influences allows for targeted synthesis of cellulose/CaCO3 composites with desired properties.