Amakuru

Ikoreshwa rya pulasitiki ikoze mu bukorikori ikomoka kuri peteroli riragoye bitewe n’ibibazo bizwi cyane by’umwanda w’umweru. Gushaka umutungo kamere wa karuboni usubiramo nk’ubundi buryo byabaye ingenzi cyane kandi byihutirwa. Aside polylactic (PLA) yakunze gufatwa nk’ubundi buryo bushobora gusimbura ibikoresho bisanzwe bikomoka kuri peteroli. Nk’umutungo ushobora kongera gukoreshwa ukomoka kuri biomass ufite imiterere ikwiye ya mekanike, uhuza neza n’ibinyabuzima, kandi udashobora kwangirika, PLA yagize iterambere rikomeye mu bijyanye na pulasitiki ikoze mu buhanga, ibikoresho bya biomedical, imyenda, n’ikoreshwa mu gupakira mu nganda. Ariko, ubushobozi bwayo bwo kudakoresha ubushyuhe buke n’ubukomere buke bigira ingaruka zikomeye ku buryo ikoreshwa.

Hakozwe ivanga rya aside polylactic (PLA) na thermoplastic silicone polyurethane (TPSiU) elastomer kugira ngo PLA ikomeze.

Ibisubizo byagaragaje ko TPSiU yavanze neza na PLA, ariko nta ngaruka za shimi zabayeho. Kongeramo TPSiU nta ngaruka zigaragara byagize ku bushyuhe bw'impinduka mu kirahuri n'ubushyuhe bwo gushonga kwa PLA, ariko byagabanyije gato ubwiza bwa PLA.

Ibisubizo by'isesengura ry'imiterere n'imikorere y'imashini byagaragaje imikoranire mibi ya thermodynamic hagati ya PLA na TPSiU.

Ubushakashatsi ku myitwarire y’imitsi bwagaragaje ko ubusanzwe PLA/TPSiU yashongaga yari amazi ya pseudoplastic. Uko ingano ya TPSiU yiyongeraga, ubukana bwa PLA/TPSiU bwagaragaje ko butangira kuzamuka hanyuma bukagabanuka. Kongeramo TPSiU byagize ingaruka zikomeye ku miterere y’imitsi ya PLA/TPSiU. Iyo ingano ya TPSiU yari 15 wt%, uburebure bw’umuvuduko wa PLA/TPSiU bwageze kuri 22.3% (inshuro 5.0 z’umuvuduko wa PLA), kandi imbaraga z’ingaruka zageze kuri 19.3 kJ/m2 (inshuro 4.9 z’umuvuduko wa PLA, bigaragaza ko ubwiyongere bw’umuvuduko burushaho kuba bwiza.

Ugereranyije na TPU, TPSiU ifite ingaruka nziza zo gukomera kuri PLA ku ruhande rumwe kandi irwanya ubushyuhe ku rundi ruhande.

Ariko,SILIKE SI-TPVni elastomer ikoresha thermoplastic ya vulcanized thermoplastic Silicone. Yateye impungenge nyinshi kubera ubuso bwayo bufite imiterere yihariye kandi ikora neza ku ruhu, irwanya umwanda cyane, irwanya gushwaragurika neza, idafite plasticizer n'amavuta yoroshya, nta ngaruka zo kuva amaraso cyangwa gufatana, nta mpumuro mbi.

Ikindi kandi, ingaruka nziza zo gukomera kuri PLA.

Iyi mashini idasanzwe ifite umutekano kandi irinda ibidukikije, itanga uruvange rwiza rw'imiterere n'inyungu zikomoka kuri thermoplastics na silicone rubber ifatanye neza, ikoreshwa mu kwambara, pulasitiki z'ubuhanga, ibikoresho bya siyansi, imyenda, n'ibikoresho byo gupfunyika mu nganda.

Amakuru ari hejuru, yakuwe muri Polymers (Basel). 2021 Kamena; 13 (12): 1953., Guhindura aside polylactic hifashishijwe Thermoplastic Silicone Polyurethane Elastomer. na, Super Tough Poly (aside lactic) ivanga Isuzuma Ryuzuye” (RSC Adv., 2020,10,13316-13368)