PBAT (polybutylene terephthalate) bụ mbiri maka polybutylene terephthalate. Akụrụngwa maka nkwadebe nke PBAT bụ tumadi adipic acid (AA), terephthalic acid (PTA), butylene glycol (BDO) dị ka monomers, dị ka akụkụ ụfọdụ nke esterification ma ọ bụ transesterification mmeghachi omume na polycondensation mmeghachi omume synthesize polyadipic acid / butylene terephthalate. ester, wee site na esterification, polycondensation na granulation nzọụkwụ atọ iji kwadebe ngwaahịa ikpeazụ. PBAT nwere mgbanaka benzene, ya mere ọ nwere nkwụsi ike nke molekụla dị elu, ma ọnụ ọgụgụ mmebi molekụla dị ala; ụmụ irighiri ihe na-ejide nnukwu ohere ma na-enyere aka ịgwakọta na ụmụ irighiri ihe ndị ọzọ; O nwere agbụ abụba, nke na-ekwe nkwa mgbanwe dị mma nke ụdọ molekụla ma si otú a dị mma ductility.
PBAT bụ polymer semi-crystalline, na-emekarị okpomọkụ crystallization bụ gburugburu 110 Celsius C, na agbaze ebe bụ banyere 130 Celsius C, na njupụta dị n'etiti 1.18g/ml ~ 1.3g/ml. The crystallinity nke PBAT bụ banyere 30%, na Shore hardness dị n'elu 85. PBAT bụ a copolymer nke aliphatic na aromatic otu, nke na-agwakọta magburu onwe mbibi Njirimara nke aliphatic polyesters na ezi n'ibu Njirimara nke aromatic polyesters. Ọrụ nhazi nke PBAT dị nnọọ ka LDPE, a pụkwara ịfụ ihe nkiri ahụ na ngwa nhazi LDPE.
PBAT nwere ezigbo biodegradability, na ngwaahịa ndị e mere na PBAT na-adị mfe na kpamkpam kpamkpam site n'enyemaka nke microorganisms eke na nje bacteria, emecha ghọọ carbon dioxide na mmiri. N'ihi ductility ya dị mma, elongation na nkwụsịtụ, nkwụsị ọkụ na mmetụta mmetụta, PBAT nwere ike iji mee ihe na ụlọ ọrụ nkwakọ ngwaahịa plastik, dị ka akpa ịzụ ahịa, akpa mkpofu, wdg, ma na-ejikwa tebụl, ihe nkiri mulch na ubi ndị ọzọ.
Oge nzipu: Jan-19-2023