Reaction Behavior of Cellulose in the Homogeneous Esterification of Bagasse Modified with Phthalic Anhydride in Ionic Liquid 1-Allyl-3-methylimidazium Chloride

Figure 4

2D HSQC NMR spectra of unmodified cellulose (C0, spectrum a), phthalated cellulose (C5, spectra b and d), and phthalated bagasse (S5, spectrum c).

(a)

(b)

(c)

(d)