Ibiranga nibisabwa bya PHA

Polyhydroxyalkanoate (PHA), polyester yo mu nda ikomatanyirijwe hamwe na mikorobe myinshi, ni biomaterial isanzwe ya polymer.

CIbiranga PHA

Ibinyabuzima bishobora kwangirika: PHA ihita ibora ibinyabuzima, idafite ifumbire mvaruganda, irashobora kwangirika mu butaka n’amazi, mu kirere cy’ikirere na anaerobic, kandi igihe cyo kwangirika kirashobora kugenzurwa, bitewe nubunini nubunini bwibicuruzwa bya PHA nibindi bihe byo hanze.Ukurikije ibidukikije, igipimo cyo kwangirika kwa PHA cyihuta inshuro 2 kugeza kuri 5 ugereranije na chimique ya biodegradable material polycaprolactone (PCL) cyangwa izindi polotike ya alifatique yangirika;mugihe PHA yegeranye cyane ni aside polylactique (PLA) Biodegradation ntizoroshye kugaragara munsi ya dogere selisiyusi 60.

Biocompatibilité nziza: PHA irashobora kwangirika muri oligomeri ntoya cyangwa ibice bya monomer mumubiri, bidafite uburozi kandi bitangiza ibinyabuzima, kandi ntibizatera kwangwa.Kubwibyo, irashobora gukoreshwa kumagufa yubukorikori, ibiyobyabwenge bikomeza-kurekura nibindi nkibyo.Mu 2007, suture ikurura (TephaFLEX®) ikozwe muri P4HB yemejwe na FDA yo muri Amerika kandi ibaye ibicuruzwa byambere byubuvuzi bwa PHA byamamaye kwisi.Kugeza ubu, isi irimo kwiga cyane ikoreshwa rya PHA mubice byinshi nkubwubatsi bwa tissue, ibikoresho byatewe, hamwe nabatwara ibiyobyabwenge bikomeza kurekura.

Umutungo mwiza uhuriweho: urashobora gukoreshwa muguhuza nibindi bikoresho.Kurugero, PHA irashobora kongerwamo impapuro kugirango ikore impapuro zipakira hamwe nibintu byihariye;cyangwa ikomatanyirijwe hamwe nicyuma, aluminium, amabati nibindi bikoresho byuma, kandi birashobora no kongerwamo ivu ryisazi kugirango bitezimbere imikorere yubushyuhe nubukomere bwa PHA;hiyongereyeho, PHA na calcium silikatike Ifumbire ikoreshwa mukwongera igipimo cyo gutesha agaciro PHA no gukemura ikibazo cyagaciro gake pH nyuma yo kwangirika kwa PHA;irashobora kandi kwongerwaho hamwe nuburyo bumwe na bumwe bwo gukiza imiti kugirango ikore ibikoresho byo gutwikira hamwe nibikorwa bidafite amazi.

Imiterere ya gazi ya gazi: PHA ifite ibyiza bya bariyeri kandi irashobora gukoreshwa mububiko bushya;hydrolytic stabilite: hydrophobicity ikomeye, ikoreshwa mugukora ibikoresho byo kumeza;optique idafite umurongo: PHA ifite ibikorwa bya optique, kandi buri gice cyubatswe gifite Carbone ya chiral irashobora gukoreshwa mubisesengura rya chromatografique kugirango itandukane isomeri optique;UV itajegajega: Ugereranije nizindi polyolefine na polyaromatic polymers, ifite UV ihagaze neza.

Gusabasya PHA

1. Ibikoresho byubuvuzi.PHA isanzwe ikoreshwa mubuvuzi mugukora suture yo kubaga, staples, insimburangingo yamagufa, abasimbura imiyoboro yamaraso, abatwara ibiyobyabwenge bikomeza kurekura, gants zo kwa muganga, ibikoresho byo kwambara, tampon, firime yubuvuzi, nibindi.

2. Ibikoresho byo gupakira ibinyabuzima bishobora kwangirika kandi bidafite amazi kandi biramba nkibicuruzwa byabaguzi nkibicuruzwa by isuku, impuzu, kwisiga (ibikoresho bya exfoliating muma cosmetike, amacupa yamazi), nibindi.

3. Ibikoresho.Ibikoresho, ibikoresho byo kumeza, ibirahure, amashanyarazi, imbere yimodoka, nibindi

4. Ibikomoka ku buhinzi.Ibinyabuzima byangiza imiti yica udukoko nifumbire, firime ya plastike, nibindi

5. Itangazamakuru ryimiti nigishishwa.Isuku, amarangi, imashini ya wino, ibifatika, ibikoresho bikora neza.

6. Ikoreshwa nkibikoresho fatizo kubikoresho bya termosetting (polyurethane na resin polyester idahagije).