I-PBAT (i-polybutylene terephthalate) sisishunqulelo se-polybutylene terephthalate. Izinto ekrwada ukulungiselela PBAT ubukhulu becala adipic acid (AA), terephthalic acid (PTA), butylene glycol (BDO) njengoko monomers, ngokomlinganiselo othile esterification okanye transesterification reaction kunye nepolycondensation reaction to synthesize polyadipic acid/butylene terephthalate. I-ester, kunye ne-esterification, i-polycondensation kunye ne-granulation amanyathelo amathathu okulungiselela imveliso yokugqibela. I-PBAT iqulethe amakhonkco e-benzene, ngoko inozinzo oluphezulu lwe-molecular thermal, kodwa izinga eliphantsi lokuthotywa kwe-molecular; iimolekyuli zithatha indawo enkulu kwaye zikulungele ukuxubana nezinye iimolekyuli; Inamatyathanga atyebileyo, aqinisekisa ukuguquguquka okuhle kwamatyathanga emolekyuli kwaye ngaloo ndlela i-ductility entle.
I-PBAT yi-polymer ye-semi-crystalline, ngokuqhelekileyo ukushisa kwe-crystallization kujikeleze i-110 ° C, kwaye indawo yokunyibilika i malunga ne-130 ° C, kwaye ubuninzi buphakathi kwe-1.18g / ml ~ 1.3g / ml. I-crystallinity ye-PBAT imalunga ne-30%, kwaye ukuqina kwe-Shore kungaphezulu kwe-85. I-PBAT yi-copolymer yamaqela e-aliphatic kunye ne-aromatics, edibanisa iimpawu ezigqwesileyo zokuthotywa kwe-aliphatic polyesters kunye neempawu ezilungileyo zomatshini ze-polyester ezivumba. Ukusebenza kokucubungula kwe-PBAT kufana kakhulu ne-LDPE, kwaye ifilimu inokuvuthelwa ngezixhobo zokusebenza ze-LDPE.
I-PBAT ine-biodegradability elungileyo, kwaye iimveliso ezenziwe nge-PBAT zilula kwaye zithotywa ngokupheleleyo ngoncedo lwee-microorganisms zendalo kunye neebhaktheriya, ekugqibeleni ziguqulwa zibe yi-carbon dioxide kunye namanzi. Ngenxa ductility yayo elungileyo, elongation ngexesha lekhefu, ukumelana ubushushu kunye neempawu impembelelo, PBAT ingasetyenziswa kwishishini lokupakisha zeplastiki, ezifana iingxowa zokuthenga, iingxowa zenkunkuma, njl.
Ixesha lokuposa: Jan-19-2023