Nūhou

Ua hoʻokūkū ʻia ka hoʻohana ʻana i nā plastics synthetic i loaʻa mai ka petroleum ma muli o nā pilikia kaulana loa o ka haumia keʻokeʻo. Ua lilo ka ʻimi ʻana i nā kumuwaiwai kalapona hou i mea nui a wikiwiki hoʻi. Ua manaʻo nui ʻia ka waikawa Polylactic (PLA) he koho kūpono e pani i nā mea petroleum maʻamau. Ma ke ʻano he kumuwaiwai hou i loaʻa mai ka biomass me nā waiwai mechanical kūpono, biocompatibility maikaʻi, a me ka degradability, ua ʻike ʻo PLA i ka ulu nui ʻana o ka mākeke i nā plastics ʻenekinia, nā mea biomedical, nā lole, nā noi hoʻopili ʻoihana. Eia nō naʻe, ʻo kona kūpaʻa wela haʻahaʻa a me ka paʻakikī haʻahaʻa e kaupalena nui i kāna laulā o nā noi.

Ua hana ʻia ka hoʻohuihui ʻana o ka polylactic acid (PLA) a me ka thermoplastic silicone polyurethane (TPSiU) elastomer e hoʻoikaika i ka PLA.

Ua hōʻike nā hopena ua hoʻohui maikaʻi ʻia ʻo TPSiU i loko o ka PLA, akā ʻaʻohe hopena kemika i hana ʻia. ʻAʻohe hopena maopopo o ka hoʻohui ʻana o TPSiU i ka mahana hoʻololi aniani a me ka mahana heheʻe o PLA, akā ua hoʻemi iki i ka crystallinity o PLA.

Ua hōʻike ke ʻano morphology a me nā hopena loiloi mechanical dynamic i ka hoʻohālikelike thermodynamic maikaʻi ʻole ma waena o PLA a me TPSiU.

Ua hōʻike ʻia nā haʻawina hana rheological he wai pseudoplastic ka PLA/TPSiU heheʻe. I ka piʻi ʻana o ka nui o TPSiU, ua hōʻike ka mānoanoa o nā hui PLA/TPSiU i kahi ʻano o ka piʻi mua a laila ka hāʻule ʻana. ʻO ka hoʻohui ʻana o TPSiU he hopena koʻikoʻi i nā waiwai mechanical o nā hui PLA/TPSiU. I ka wā i 15 wt% ka nui o TPSiU, ua hiki ka elongation i ka haki ʻana o ka hui PLA/TPSiU i 22.3% (5.0 manawa o ka PLA maʻemaʻe), a ua hiki ka ikaika o ka hopena i 19.3 kJ/m2 (4.9 manawa o ka PLA maʻemaʻe), e hōʻike ana i ka hopena toughening maikaʻi.

Ke hoʻohālikelike ʻia me TPU, ʻoi aku ka maikaʻi o ka hopena paʻakikī o TPSiU ma ka PLA ma kekahi ʻaoʻao a ʻoi aku ka maikaʻi o ke kūpaʻa wela ma kekahi ʻaoʻao.

Eia naʻe,SILIKE SI-TPVhe elastomers silicone thermoplastic vulcanized dynamic i hoʻopaʻa ʻia. Ua huki nui ʻia ka hopohopo ma muli o kona ʻili me ka silky kū hoʻokahi a me ka pā ʻili-aloha, kūpaʻa maikaʻi loa i ka hōʻiliʻili lepo, ʻoi aku ka maikaʻi o ke kūpaʻa ʻana i ke kahakaha ʻana, ʻaʻohe plasticizer a me ka ʻaila palupalu, ʻaʻohe pilikia kahe koko / pipili, ʻaʻohe ʻala.

Eia kekahi, ʻoi aku ka maikaʻi o ka hopena paʻakikī ma ka PLA.

Hāʻawi kēia mea kūikawā palekana a aloha i ke kaiapuni i kahi hui maikaʻi o nā waiwai a me nā pono mai nā thermoplastics a me ka rubber silicone i hoʻopili piha ʻia. kūpono no nā ʻili hiki ke komo, nā plastics ʻenekinia, nā mea biomedical, ka lole, nā noi hoʻopili ʻoihana.

ʻIke ma luna, i lawe ʻia mai Polymers (Basel). Iune 2021; 13(12): 1953., Hoʻololi ʻana i ka Toughening o ka Polylactic Acid e Thermoplastic Silicone Polyurethane Elastomer. a, Super Tough Poly(Lactic Acid) Blends A Comprehensive Review”（RSC Adv., 2020,10,13316-13368）