Research have shown that exposure of phthalates in our surrounding are harmful for human health because phthalate tends to leach out of the plastic and contaminate food, furniture and etc. Phthalate are used as plasticizer for variety of things such as furniture, clothing, building material and many more. Today, researchers led by Rebecca Braslau and her team have addressed those issue by developing a safer chemical, a non-migratory plasticizer.
These non-migratory plasticizer are bonded to the PVC compared to the traditional phthalate that are melted together with PVC. Because it is chemically bonded, the chemical will not leach out of the plastic.
Source: https://polymer-additives.specialchem.com/news/industry-news/ucsc-non-migratory-plasticizers-pvc-000216384?src=pbsc-5FE1511A-3F4F-4050-8482-F83825DAA376-pushbottom-2