Table 3 Summary of some cellulose derivatives and its corresponding hydrogel processing methods

Cellulose form wood

Polar solvents

NMMO

Solution polymerization at 85 °C

[97]

Cellulose from cotton pulp

Polar solvents

LiCl/DMAc

Solution polymerization at 75–90 °C

[98]; [99]; [100]

Filter paper

Ionic solvents

[Amim]Cl

Solution polymerization at 70 °C, 2 h

([101]; [102])

Tunicate cellulose

Alkali aqueous systems

Alkali/urea

Polymerization at −12 to −10 °C, 5–10 min

[103]

Cotton linter

Alkali aqueous systems

Alkali/thiourea

Polymerization at −5 °C, 2–10 min

[104]

Carboxymethylcellulose

(CMC)

Polar solvents

H₂O

Solution polymerization, In situ polymerization

[105]; [106]; [107]

Methyl cellulose (MC)

Polar solvents

DCM/DMSO

Solution polymerization, In situ polymerization

[106]; [108]; [109]

Hydroxyethyl cellulose (HEC)

Polar solvents

H₂O

Solution polymerization, cryogenic treatment

[106]; [110]

Hydroxypropyl methyl cellulose (HEMP)

Polar solvents

H₂O/ethanol

Solution polymerization, inverse-phase suspension polymerization

[106]; [111]

Cellulose acetate (CA)

Polar solvents

Acetone/H₂O

Chemical cross-linking

[112]