Diapers are absorbent material used on babys to retain urine and poo (faeces) Because of the material in them, traditional diapers/baby nappies can eventually contaminate groundwater when they are disposed as rubbish. These diapers/baby nappies contain less hazardous material (the article claims)

These are nappies in the UK, used mostly with babies.

Thanks Austin

Diapers are baby diapers. This new material will make the absorbent better if it is used to make the baby diapers.