Ukusetshenziswa kwamapulasitiki okwenziwa okususelwa ku-petroleum kuphonswe inselelo ngenxa yezingqinamba ezaziwa kakhulu zokungcoliswa okumhlophe. Ukufuna izinsizakusebenza zekhabhoni ezingavuseleleke njengenye indlela sekubaluleke kakhulu futhi ziphuthume kakhulu. I-Polylactic acid (PLA) ibheke kabanzi ngenye indlela yokushintsha izinto ezijwayelekile ze-petroleum. Njengomsebenzi ovuselelekayo osuselwa kwi-biomass enezinto ezifanele zemishini, ukuwohloka okuhle, nokulimazeka, i-PLA iye yabhekana nokukhula kwemakethe okuqhumayo kumapulasitiki wobunjiniyela, izicelo ze-biomedical, izindwangu zokufaka izimboni. Kodwa-ke, ukumelana kwayo okuphansi kanye nokuqina okuphansi kukhawulele kakhulu ububanzi bawo bezicelo.
Ukuncibilika kwe-acid ye-polylactic acid (PLA) kanye ne-elastomer ye-wermoplastic polyurethane (tpsiu) i-elastomer yenziwe ku-plan pla.
Imiphumela ikhombisile ukuthi i-tpsiu yahlanganiswa ngempumelelo ku-PLA, kepha akukho ukusabela kwamakhemikhali okwenzekile. Ukungezwa kwe-tpsiu bekungekho mphumela osobala ekushiseni kokushintshwa kwengilazi nokushisa okuncibilikayo kwe-PLA, kepha kunciphise kancane i-crystaltaltive of Pla.
Imiphumela yokuhlaziya ye-morphology kanye ne-Dynamic Mechanical Hlanzana yabonisa ukuhambisana okumpofu kwe-thermodynamic phakathi kwe-PLA ne-TPSIU.
Izifundo ze-Rheological zokuziphatha zikhombise ukuthi i-PLA / TPSIU MELT yayivame ukugcwala i-pseudoplastic fluid. Njengoba okuqukethwe kwe-tpsiu kukhuphuke, ukubonwa okubonakalayo kwePla / Tpsiu Blends kubonise umkhuba wokuvuka kuqala bese uyawa. Ukungezwa kwe-tpsiu kwaba nomphumela obalulekile kwizakhiwo zemishini ze-pla / tpsiu zixube. Lapho okuqukethwe kwe-tpsiu kwakungu-15 WT%, ukugcwala ekwephuleni kwe-Pla / Tpsiu Blend kufinyelelwe ama-22.3% (ama-50 times nge-Pla emsulwa), futhi amandla wethonya elifinyelelwe ku-19.3 KJ / M2 (izikhathi ezi-4,9 zepla), ephakamisa umphumela omuhle onamandla.
Uma kuqhathaniswa ne-TPU, i-tpsiu inomphumela ongcono onamandla ku-Pla ngakolunye uhlangothi kanye nokumelana okungcono kokushisa ngakolunye uhlangothi.
Noma kunjalo,Silike Si-TPVi-allmoplers enelungelo lobunikazi elishukumisayo le-allmoplanical armopled arastomers. Idonsele ukukhathazeka okukhulu ngenxa yendawo yayo enokuphikisana okuhlukile kwesikhumba kanye nesikhumba, ukumelana okuhle kakhulu kokungcola, ukumelana kokopha okungcono, kungabikho egcekeni / ubungozi obunamathelayo, akukho bungozi obunamathelayo, akukho bungozi obunamathelayo, akukho bungozi obunamathelayo, akukho bungozi.
Kanye, umphumela ongcono kakhulu we-pla.
Lokhu okuhlukile okuphephile okuphephile futhi okunobungane kwezemvelo, kuhlinzeka ngenhlanganisela enhle yezakhiwo nezinzuzo ezivela kuma-thermoplastics kanye nerabha le-silicone exhumeke ngokuphelele. Amasudi wokugqoka ongagqokekayo, amapulasitiki wobunjiniyela, izinto zemvelo, izindwangu, izinhlelo zokusebenza zokupakisha zezimboni.
Ngenhla imininingwane, ekhishwe ku-polymers (Basel). 2021 Jun; 13 (12): 1953., Ukuguqulwa okunamandla kwe-polylactic acid ngu-Thermoplastic Silicone Polyurethane Elastomer. Futhi, i-Super Houfy Poly (i-lactic acid) ihlanganisa ukubuyekezwa okuphelele "(RSC Adv., 2020,10,13316-13368)
Isikhathi sePosi: Jul-08-2021
