Study on Characteristics of Six Polysaccharides and Cellulose Blends

Abstract

In order to study the internal cross-linking mechanism between cellulose and polysaccharides as wet-end additives in papermaking reconstituted tobacco, crystalline cellulose (MCC) was used as the target in this paper, sodium alginate (SA) , pullulan (Pul) , κ-carrageenan (κ-C), carboxymethyl chitosan (CMCS), hydroxypropyl chitosan (HPCS) and tamarind polysaccharide (TSP) were selected, the structure and composition of the monomer polysaccharides were determined by dynamic light scattering and ion chromatography, at the same time, the characteristics of the above-mentioned polysaccharides and MCC blend were analyzed, the results showed that SA contained a lot of negative charge, which resulted in weak adhesion and poor adsorption ability in cellulose blend; Pul was the most compact chain conformation, effectively improve the adhesion of cellulose, can be quickly adsorbed on cellulose; κ-C increased the viscosity of MCC blend and could adhere the 30μm size fragments of cellulose CMCS had strong adhesion to cellulose edge; due to the introduction of carboxymethyl group, the hydrophilicity of HPCS and the apparent viscosity of MCC blend increased greatly; the complex branched-chain structure of TSP results in high storage modulus of TSP/cellulose blend, and the amount of TSP adsorbed on cellulose is large and lasts long. Pul, TSP, κ-c, CMCS and TSP could adsorb cellulose well.