Fig. 9.7 Branched polyethylene. Source: Ref 9.1 More

Fig. 9.11 Change of the specific volume of polyethylene with temperature. If it does not crystallize at the melting temperature, polyethylene will remain a supercooled liquid until it reaches its glass transition temperature. Source: Ref 9.1 More

Fig. 9.15 Stress-strain curve for polyethylene. Note the formation and propagation of a necked region along the gage section. Source: Ref 9.2 More

Fig. 9.16 Stages of neck formation and propagation in high-density polyethylene. Source: Ref 9.3 More

Fig. 14.1 Recycling symbols for polymers. (1) Polyethylene terephthalate, also indicated by PET and called polyester. (2) High-density polyethylene (also PE-HD).(3) Polyvinyl chloride, or PVC. (4) Low-density polyethylene (PE-LD), or LLDPE for very-low-density polyethylene. (5) Polypropylene More

Fig. 3.3 Repeat unit for polyethylene. The central molecular structure unit between the brackets is repeated to form the polymer. More

Fig. 3.16 Differential scanning calorimetry data taken during heating of polyethylene, showing onset of melting at 112 °C (234 °F) and termination of melting at 138 °C (280 °F). Source: Barbosa et al. ( Ref 3 ) More

Fig. 3.22 Viscosity versus shear strain rate for high-density polyethylene at temperatures of 170, 190, and 210 °C (340, 375, and 410 °F). Shear thinning is evident by the reduction in viscosity as the strain rate increases, and thermal softening is evident by the temperature effect. More

Fig. 5.17 Relative mixture viscosity versus solids loading for iron in polyethylene. The critical solids loading is identified by the progressive resistance to flow, occurring near 60 vol% in this case. More

Fig. 10 X-ray photoelectron spectroscopy high-resolution spectrum of polyethylene terephthalate More

Fig. 3 Crazing fibrils in linear polyethylene (density, 0.964 g/cm 3 ) More

Fig. 10 Time-to-failure of high-density polyethylene pipes at different stresses and temperatures. Source: Ref 11 More

Fig. 22 Brittle fracture surface of a polyethylene gas pipe showing rib marking at crack arrest. 14.5× More

Fig. 24 Rib markings near the origin of polyethylene gas pipe fracture. 14× More

Fig. 26 SEM view of fatigue striations in medium-density polyethylene, laboratory tested at 0.5 Hz with maximum stress 30% of the yield strength. Crack growth is upward in this view. Original magnification 200×. Source: Ref 23 More

Fig. 30 Fracture band width as a function of crack length for the polyethylene pipe shown in Fig. 29 . T , transition point More

Fig. 4 Ethylene and polyethylene. Source: Ref 4 More

Fig. 10 Rheological profile of high-density polyethylene (HDPE) More

Fig. 17 Dynamic mechanical properties of polyethylene terephthalate (PET) film as a function of temperature; 0.05 mm (0.002 in.) thick specimen, 6.28 rad/s frequency More

Fig. 26 Melting point and percent crystallinity of high-density polyethylene (HDPE) 10 mcal/s range; 10 °C/min (18 °F/min), 7.1 mg (1.5 gr). Source: Ref 29 More