Uiga ma Fa'aoga ole PHA

O le Polyhydroxyalkanoate (PHA), o se polyester intracellular fa'apipi'iina e le tele o meaola ninii, o se polymer biomaterial masani.

Cuiga o le PHA

Biodegradability: O le PHA e faʻaleagaina faʻafuaseʻi, e aunoa ma le faʻapalapala, e mafai ona faʻaleagaina i le palapala ma le vai, i lalo ole aerobic ma anaerobic tulaga, ma o le taimi faʻaleagaina e mafai ona faʻatonutonuina, e faʻatatau i le tuufaatasiga ma le tele o le PHA oloa ma isi tulaga fafo.Fa'alagolago i le si'osi'omaga, o le fa'aleagaina o le PHA e 2 i le 5 taimi e sili atu le vave nai lo le polycaprolactone (PCL) fa'apipi'i fa'ama'i fa'ama'iina po'o isi polyesters aliphatic fa'aleagaina;a'o le PHA pito lata ane ole polylactic acid (PLA) E le faigofie ona tupu le biodegradation i lalo ole 60 tikeri Celsius.

Lelei biocompatibility: E mafai ona faʻaleagaina le PHA i ni oligomers mole mole poʻo vaega monomer i totonu o le tino, e le oona ma le afaina i meaola, ma o le a le mafua ai le teena.O le mea lea, e mafai ona faʻaoga i ponaivi faʻapitoa, vailaʻau faʻamalolo-faʻamalolo ma mea faapena.I le 2007, o le suture absorbable (TephaFLEX®) na faia i le P4HB na faʻamaonia e le US FDA ma avea ma faʻatau muamua PHA oloa faafomaʻi i le lalolagi.I le taimi nei, o loʻo suʻesuʻeina ma le malosi e le lalolagi le faʻaogaina o le PHA i le tele o matata e pei o le inisinia faʻainisinia, mea faʻapipiʻi, ma vailaʻau faʻamalolo faʻamalolo.

Lelei tu'ufa'atasi meatotino: e mafai ona fa'aoga fa'atasi ma isi mea.Mo se faʻataʻitaʻiga, e mafai ona tuʻufaʻatasia le PHA ma le pepa e fai ai pepa afifiina ma mea faʻapitoa;poʻo le faʻapipiʻiina i le uʻamea, alumini, apa ma isi mea uʻamea, ma e mafai foi ona faʻapipiʻiina i le pefu lele e faʻaleleia ai le faʻaogaina o le vevela ma le faigata o le PHA;e le gata i lea, o le PHA ma le calcium silicate Compounding e faʻaaogaina e faʻateleina ai le faʻaleagaina o le PHA ma foia le faʻafitauli o le maualalo o le pH pe a uma le faʻaleagaina o le PHA;e mafai fo'i ona tu'ufa'atasia ma nisi vaila'au fa'amalolo fa'alanoka e maua ai mea fa'apipi'i ma galuega e le susu.

Mea fa'alava kesi: O le PHA o lo'o i ai mea lelei pa'u kesi ma e mafai ona fa'aoga i le teuina fou;mautu hydrolytic: hydrophobicity malosi, faʻaaogaina i le gaosiga o laulau laulau;nonlinear optics: PHA o lo'o i ai gaioiga fa'apitoa, ma ta'itasi fa'avae iunite e iai. E mafai ona fa'aogaina le kaponi chiral mo su'esu'ega chromatographic e vavae ese ai isomers opitika;UV mautu: Fa'atusatusa i isi polyolefins ma polyaromatic polymers, e sili atu le mautu UV.

Fa'atataugaso le PHA

1. Mea fa'alesoifua maloloina.O le PHA e masani ona faʻaaogaina i le falemaʻi e gaosia ai suʻi taʻavale, mea faʻapipiʻi, sui ponaivi, sui o le toto toto, vailaʻau faʻamalolo faʻamalolo, totigilima fomaʻi, mea faʻaofuofu, tampons, ata tifaga, ma isi.

2. Mea fa'apipi'i fa'aolaola ma mea fa'atau ma mea fa'atau ma tumau e pei o oloa tumama, napekini, mea fa'alelei (su'i fa'ama'i i mea teuteu, fagu vai), ma isi.

3. Mea faigaluega.Meafale, ipu laulau, matatioata, ki eletise, totonu o taavale, ma isi.

4. Fa'ato'aga.O lo'o feavea'i fa'ama'i fa'ato'aga o vaila'au fa'ato'aga ma fetilaisa, ata palasitika, ma isi.

5. Fa'asalalauga vaila'au ma solvents.Mea fa'amamā, vali, vaitusi vaitusi, mea fa'apipi'i, mea e fa'aogaina mata.

6. Fa'aaogaina e fai ma mea fa'avae mo mea e fa'anofoina (polyurethane ma polyester resins e le'o tumu).