Akụkọ

Ojiji plastik sịntetik sitere na mmanụ ala na-ama aka n'ihi nsogbu ndị a maara nke ọma nke mmetọ ọcha. Ịchọ akụrụngwa carbon a na-emegharị emegharị dị ka ihe ọzọ abụrụla ihe dị oke mkpa ma dịkwa ngwa ngwa. A na-ewerekarị Polylactic acid (PLA) dị ka ihe ọzọ nwere ike ịgbanwe iji dochie ihe ndị e ji mmanụ ala mee. Dịka ihe onwunwe a na-emegharị emegharị sitere na biomass nwere ihe onwunwe igwe kwesịrị ekwesị, ezigbo biocompatibility, na ire ere, PLA enwetala mmụba ahịa na-agbawa agbawa na plastik injinia, ihe biomedical, ákwà, ngwa nkwakọ ngwaahịa ụlọ ọrụ mmepụta ihe. Agbanyeghị, obere iguzogide okpomọkụ na obere ike ya na-ebelata oke ojiji ya.

A rụrụ ngwakọta nke polylactic acid (PLA) na thermoplastic silicone polyurethane (TPSiU) elastomer iji mee ka PLA sie ike.

Nsonaazụ gosiri na TPSiU agwakọtala nke ọma na PLA, mana ọ dịghị mmeghachi omume kemịkalụ ọ bụla mere. Mgbakwunye nke TPSiU enweghị mmetụta doro anya na okpomọkụ mgbanwe iko na okpomọkụ agbaze nke PLA, mana ọ belatara ntakịrị kristal nke PLA.

Nsonaazụ nyocha nke morphology na dynamic mechanical gosiri na enweghị ike ijikọ thermodynamic n'etiti PLA na TPSiU.

Ọmụmụ banyere omume rheological gosiri na agbaze PLA/TPSiU na-abụkarị mmiri pseudoplastic. Ka ọdịnaya nke TPSiU na-amụba, viscosity doro anya nke ngwakọta PLA/TPSiU gosiri usoro nke ịrị elu na mbụ wee daa. Mgbakwunye nke TPSiU nwere mmetụta dị ukwuu na njirimara igwe nke ngwakọta PLA/TPSiU. Mgbe ọdịnaya nke TPSiU bụ 15 wt%, ogologo oge na mgbawa nke ngwakọta PLA/TPSiU ruru 22.3% (ugboro 5.0 nke PLA dị ọcha), ike mmetụta ahụ ruru 19.3 kJ/m2 (ugboro 4.9 nke PLA dị ọcha), na-egosi mmetụta siri ike dị mma.

Ma e jiri ya tụnyere TPU, TPSiU nwere mmetụta siri ike karịa na PLA n'otu aka ma nweekwa ike iguzogide okpomọkụ ka mma n'aka nke ọzọ.

Agbanyeghị,SILIKE SI-TPVbụ ihe e ji silicone mee nke nwere ike ịgbanwe agbanwe, nke nwere ike ime ka akpụkpọ ahụ dị nro ma dị nro, ọ na-egbochikwa ịchịkọta unyi nke ọma, ọ naghị enwe ike ịmịcha ihe, ọ naghị enwe ike ịgba ọbara/ịrapara n'ahụ, ọ naghịkwa esi isi.

Nakwa, mmetụta siri ike ka mma na PLA.

Ihe a pụrụ iche dị mma ma dịkwa mma maka gburugburu ebe obibi, na-enye ezigbo njikọta nke ihe onwunwe na uru sitere na thermoplastics na roba silicone jikọtara ọnụ nke ọma. Dabara maka elu a na-eyi, plastik injinia, ihe biomedical, ákwà, na ngwa nkwakọ ngwaahịa ụlọ ọrụ.

Ozi dị n'elu, ewepụtara na Polymers (Basel). 2021 Jun; 13(12): 1953., Mgbanwe Ike nke Polylactic Acid site na Thermoplastic Silicone Polyurethane Elastomer. na, Super Tough Poly(Lactic Acid) Blends A Comprehensive Review”(RSC Adv., 2020,10,13316-13368)