Table 6. Sustainability Profile of Fibrous Polymers Used Fiber in Wearable E-Textiles.

polymers	raw materials	biodegradability	composting	recyclability	energy consumption	carbon footprint	environmentally friendly
rPET	postconsumer PET bottles	nonbiodegradable	noncompostable	can be recycled several times from PET which stands as rPET	35 MJ/kg324	0.45 kg CO2 equivalent per kilogram of rPET324	rPET reduces energy consumption 79% and greenhouse gas emissions 67%
PLA	100% renewable source/bio-based: corn	biodegradable by microorganism	industrial-scale composting needed which is not enough in facilities, i.e., conditionally compostable	other plastic in resin identification, sometimes recyclable: but not in bulk scale	58.9 MJ/kg325	500 g CO2/kg325	production uses 65% less energy than conventional virgin plastics; bioplastics are safe as food packaging materials, though they are not microwaveable