Fecha de publicación: 27/09/2022 Fuente: WIPO Wine The invention discloses an environment-friendly plasticizer, nitrile rubber and a preparation method thereof, and relates to the technical field of rubber production, and the environment-friendly plasticizer is a dried pawpaw pectin extract. The papaya pectin extract is used as a plasticizer, so that the production cost of the rubber can be effectively reduced, and the processability of the rubber and partial performance of a rubber compound and vulcanized rubber are improved. The papaya pectin extract is mainly derived from a by-product after wine brewing of papaya and belongs to a renewable resource. Through detection, the papaya pectin extract does not contain aromatic rings and accords with the current international development trend of environment-friendly plasticizers, the flash point of the papaya pectin is high, the emission of volatile matters is reduced in the production process, and the papaya pectin extract is more environment-friendly. And the papaya pectin extract has large molecular weight, is not easy to migrate out of the rubber matrix, and has good stability.