LOW-DENSITY POLYETHYLENE (LDPE)

Low-density polyethylene (LDPE) is most commonly used as plastic and has been extensively used as a backbone for radiation grafting with different monomers (Fig. 15.2). This is essentially due to its excellent chemical resistance and high impact strength. Due to its high chemical inertness against solvents, acids and bases, poly­ethylene (PE) as a matrix material became a very popular membrane after grafting with various hydrophilic monomers.

ccccccccc

HHHHHHHH

H

H

H

H

H

H

H

c

c

c

c

c

c

c

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

c

c

c

c

c

c

c

c

H

H

H

H

H

H

H

H

FIGURE 15.2 LDPE structure.