Kushandiswa kwemapurasitiki ekugadzira anobva mupetroleum kunopikiswa nekuda kwenyaya dzinonyanya kuzivikanwa dzekusvibiswa kwechena.Kutsvaga zviwanikwa zvekabhoni zvinogoneka seimwe nzira kwave kwakakosha uye nekukasira.Polylactic acid (PLA) yave ichionekwa zvakanyanya seimwe nzira inogona kutsiva yakajairika petroleum-yakavakirwa zvinhu.Sechinhu chinovandudzwa chinobva kubiomass chine zvimiro zvakakodzera zvemuchina, yakanaka biocompatibility, uye kuderera, PLA yakaona kuputika kwemusika kukura mumapurasitiki einjiniya, biomedical zvinhu, machira, maindasitiri ekurongedza maapplication.Nekudaro, kushomeka kwayo kwekupisa uye kushomeka kwakadzika kunodzikamisa huwandu hwayo hwekushandisa.
Kusanganiswa kwepolylactic acid (PLA) uye thermoplastic silicone polyurethane (TPSiU) elastomer kwakaitwa kuomesa PLA.
Mhedzisiro yacho yakaratidza kuti TPSiU yakanyatso kusanganiswa muPLA, asi hapana kuita kwemakemikari kwakaitika.Kuwedzerwa kweTPSiU kwakanga kusina mhedzisiro yakajeka pane yegirazi yekuchinja tembiricha uye kunyunguduka tembiricha yePLA, asi zvishoma yakaderedza crystallinity yePLA.
Iyo morphology uye dynamic mechanical analysis mhedzisiro yakaratidza hurombo hwe thermodynamic kuenderana pakati pePLA neTPSiU.
Rheological maitiro ezvidzidzo zvakaratidza kuti PLA/TPSiU yakanyunguduka yaive yakajairika pseudoplastic fluid.Sezvo zvirimo zveTPSiU zvakawedzera, iyo inooneka viscosity yePLA/TPSiU misanganiswa yakaratidza maitiro ekutanga kusimuka obva adonha.Kuwedzerwa kweTPSiU kwakave nekuita kwakakosha pane mechanical properties yePLA/TPSiU blends.Kana zviri mukati meTPSiU zvaive 15 wt%, kurebesa pakuputsika kwePLA/TPSiU musanganiswa wakasvika 22.3% (5.0 nguva yePLA yakachena), uye simba rekuita rakasvika 19.3 kJ/m2 (4.9 nguva yePLA yakachena), zvichiratidza kunaka kwekuomesera.
Kuenzaniswa neTPU, TPSiU ine zvirinani kuomesera mhedzisiro paPLA kune rumwe rutivi uye nani kupisa kupisa kune rimwe divi.
Zvisinei,SILIKE SI-TPVndeye patented dynamic vulcanized thermoplastic Silicone-based elastomers.Yakakwevera kushushikana kwakanyanya nekuda kwechiso chayo ine Yakasarudzika silky uye ine ganda-inoshamwaridzika kubata, yakanakisa tsvina kuunganidza kuramba, nani kukwenya kuramba, isina plasticizer uye inopfavisa mafuta, hapana kubuda ropa / inonamira njodzi, hapana hwema.
Zvakare, zvirinani kuomesera maitiro paPLA.
Iyi yakasarudzika yakachengeteka uye yakasarudzika-inoshamwaridzika zvinhu, inopa yakanaka musanganiswa wezvivakwa uye mabhenefiti kubva kune thermoplastics uye yakazara-yakabatanidzwa silicone rubha.masutu ekupfekeka pamusoro, einjiniya mapurasitiki, biomedical zvinhu, machira, maindasitiri ekurongedza maapplication.
Pamusoro peruzivo, rwakatorwa kubva kuPolymers (Basel).2021 Jun;13(12): 1953., Toughening Modification yePolylactic Acid neThermoplastic Silicone Polyurethane Elastomer.uye, Super Tough Poly(Lactic Acid) Inosanganisa Ongororo Yakazara”(RSC Adv., 2020,10,13316-13368)
Nguva yekutumira: Jul-08-2021
