PBAT yog thermoplastic biodegradable yas. Nws yog ib qho copolymer ntawm butanediol adipate thiab butanediol terephthalate. Nws muaj cov yam ntxwv ntawm PBA thiab PBT. Nws tsis tau tsuas yog zoo ductility thiab elongation ntawm so, tab sis kuj zoo tshav kub kuj thiab tej yam khoom; Tsis tas li ntawd, nws kuj muaj biodegradability zoo heev. Nws yog ib qho ntawm cov khoom siv biodegradable tshaj plaws hauv kev tshawb fawb ntawm biodegradable plastics thiab ib qho ntawm cov khoom siv degradable zoo tshaj plaws hauv khw.
PBAT yog ib tug semi crystalline polymer. Lub crystallization kub feem ntau yog nyob ib ncig ntawm 110 ℃, lub melting point yog hais txog 130 ℃, thiab qhov ceev yog nruab nrab ntawm 1.18g / ml thiab 1.3g / ml. Lub crystallinity ntawm PBAT yog hais txog 30%, thiab ntug hardness yog ntau tshaj 85. PBAT yog ib tug copolymer ntawm aliphatic thiab aromatic polyesters, uas combines cov zoo heev degradation zog ntawm aliphatic polyesters thiab cov zoo mechanical zog ntawm aromatic polyesters. Kev ua haujlwm ntawm PBAT zoo ib yam li LDPE. LDPE cov cuab yeej ua haujlwm tuaj yeem siv rau kev tshuab tshuab.