Polyhydroxyalkanoate (PHA), polyester ya intracellular yopangidwa ndi tizilombo tambirimbiri, ndi chilengedwe cha polima biomaterial.
CZotsatira za PHA
Biodegradability: PHA imawonongeka mwadzidzidzi, popanda kompositi, ikhoza kukhala yowonongeka mu nthaka ndi madzi, pansi pa mikhalidwe ya aerobic ndi anaerobic, ndipo nthawi yowonongeka imayendetsedwa, malingana ndi mapangidwe ndi kukula kwa mankhwala a PHA ndi zina zakunja.Malingana ndi chilengedwe, kuwonongeka kwa PHA ndi 2 ku 5 nthawi mofulumira kuposa mankhwala opangidwa ndi biodegradable polycaprolactone (PCL) kapena ma polyesters owonongeka opangidwa ndi aliphatic;pamene PHA yapafupi kwambiri ndi polylactic acid (PLA) Biodegradation sidzachitika mosavuta pansi pa madigiri 60 Celsius.
Kugwirizana kwabwino kwachilengedwe: PHA imatha kusinthidwa kukhala ma oligomer ang'onoang'ono a maselo kapena zigawo za monomer m'thupi, zomwe sizowopsa komanso zopanda vuto kwa zamoyo, ndipo sizingayambitse kukanidwa.Choncho, angagwiritsidwe ntchito mafupa yokumba, mankhwala kupitiriza-kumasulidwa wothandizira ndi zina zotero.Mu 2007, suture yotsekeka (TephaFLEX®) yopangidwa ndi P4HB idavomerezedwa ndi US FDA ndipo idakhala chinthu choyamba padziko lonse lapansi kugulitsa mankhwala a PHA.Pakadali pano, dziko lapansi likuphunzira mozama kugwiritsa ntchito PHA m'magawo ambiri monga uinjiniya wa minofu, zida zoyikira, komanso zonyamula zotulutsa mankhwala.
Katundu wabwino wophatikizika: atha kugwiritsidwa ntchito kuphatikiza ndi zida zina.Mwachitsanzo, PHA ikhoza kuphatikizidwa ndi mapepala kuti apange mapepala odzaza ndi zinthu zapadera;kapena kuphatikizidwa ndi chitsulo, aluminiyamu, malata ndi zitsulo zina, ndipo amathanso kuphatikizidwa ndi phulusa la ntchentche kuti apititse patsogolo kutentha ndi kulimba kwa PHA;kuonjezera apo, PHA ndi calcium silicate Compounding imagwiritsidwa ntchito kuonjezera chiwerengero cha kuwonongeka kwa PHA ndikuthetsa vuto la pH mtengo wochepa pambuyo pa kuwonongeka kwa PHA;Itha kuphatikizidwanso ndi zinthu zina zochiritsa ma inorganic kuti apange zida zokutira zomwe sizingagwire madzi.
Zolepheretsa mpweya: PHA ili ndi katundu wabwino wotchinga mpweya ndipo ingagwiritsidwe ntchito posungira mwatsopano;hydrolytic bata: wamphamvu hydrophobicity, ntchito kupanga tableware;optics nonlinear: PHA ili ndi ntchito ya kuwala, ndipo gawo lililonse lachipangidwe lili ndi A chiral carbon angagwiritsidwe ntchito pofufuza chromatographic kuti alekanitse ma isomers a kuwala;Kukhazikika kwa UV: Poyerekeza ndi ma polyolefin ena ndi ma polima a polyaromatic, ili ndi kukhazikika kwa UV bwino.
Kugwiritsa ntchitosku PHA
1. Zida zamankhwala.PHA imagwiritsidwa ntchito kwambiri pazachipatala popanga ma sutures opangira opaleshoni, ma staples, olowa m'malo mwa mafupa, olowa m'malo a mitsempha ya magazi, zonyamulira zotulutsa mankhwala, magolovesi azachipatala, kuvala zovala, ma tamponi, mafilimu azachipatala, ndi zina zotero.
2. Biodegradable ma CD zipangizo ndi madzi ndi chokhalitsa ogula zinthu monga mankhwala aukhondo, matewera, zodzoladzola (exfoliating wothandizira mu zodzoladzola, linings madzi botolo), etc.
3. Zida zamagetsi.Mipando, tableware, magalasi, zosinthira magetsi, zamkati zamagalimoto, etc.
4. Zaulimi.Biodegradable chonyamulira mankhwala ndi feteleza, filimu pulasitiki, etc.
5. Chemical media ndi solvents.Zoyeretsa, utoto, zosungunulira inki, zomatira, zida zowoneka bwino.
6. Amagwiritsidwa ntchito ngati maziko a zipangizo za thermosetting (polyurethane ndi unsaturated polyester resins).
Chifukwa PHA ili ndi biocompatibility yabwino, biodegradability ndi magwiridwe antchito apulasitiki nthawi yomweyo.Chifukwa chake, itha kugwiritsidwa ntchito ngati zida zamankhwala komanso zida zopangira zinthu zomwe zimatha kuwonongeka nthawi imodzi, zomwe zakhala malo ochita kafukufuku kwambiri pazaka zaposachedwa.PHA ilinso ndi zinthu zambiri zomwe zimawonjezera mtengo wamtengo wapatali monga ma optics osagwirizana, piezoelectricity, ndi zotchinga mpweya.
WorldChamp Enterprisesadzakhala okonzeka nthawi zonse kuperekaZinthu za ECOkwa makasitomala ochokera padziko lonse lapansi,Magulovu opangidwa ndi kompositi, zikwama zogulira, chikwama chotuluka, thumba la zinyalala,zodula, chakudya chogulitsira, ndi zina.
WorldChamp Enterprises ndi mnzanu wapamtima kuti muthe kugwiritsa ntchito zinthu za ECO, njira zina zamapulasitiki azikhalidwe, kuti mupewe kuipitsidwa koyera, kupanga nyanja yathu ndi dziko lapansi kukhala zoyera komanso zoyera.
Nthawi yotumiza: Feb-10-2023