Chitin 1.2 INDEX

F. M. Arshid, C. H. Giles, and S. K. Jain. J. Chem. Soc. 1956, 1272-7. IR, index of refraction, dielectric constant, and H bond association of esters adsorption by cellulose acetate, chitin, etc. 

It is well known that chitin is a semicrystalline polymer. Consequently, it is necessary to verify whether chitin s crystalline volume fraction changes with heat treatment and its influence on relaxation behaviors. The diffraction pattern of purified a-chitin powder is shown in Figure 2.8. The five characteristic crystalline reflections for a-chitin are present [51]. They are indexed as (020), (110), (120),... 

Depolymerized chitin, carboxymethyl, and hydroxyethyl-chitin were used to coat soybean seeds before plantation in the field. It was reported that dry weight of the plants increased by 8% and the crop yield also increased by 12% in comparison to the control (Hirano 1996). Potato tubes were also coated with chitin and chitosan powder and the yield of potato increased up to 50% (Hirano 1996). Wheat seeds were also coated with chitosan and vigor index of wheat seedlings increased by 20%-30% compared to the control, and suitable concentration for chitosan treatment was 4 mg/mL (Reddy et al. 1999). 

Table 1 CrystaiUnity index of chitin chitosan composite film doped with the group -CHjOH from the Side Chain. This additional...

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