Kev paub txog PHA

Polyhydroxyalkanoate (PHA), ib qho intracellular polyester synthesized los ntawm ntau cov kab mob, yog ib tug natural polymer biomaterial.

Hauv cov kab mob microbial, tshwj xeeb tshaj yog cov kab mob hlwb, muaj ntau cov polymer polyesters - Polyhydroxyalkanoates (PHA).Qhov no yog ib tug natural polymer biomaterial.Nws tsis yog hais txog qee yam polymer, tab sisib lub sij hawm dav dav rau cov chav kawm ntawm polymers nrog cov qauv zoo sib xws thiab cov khoom sib txawv.

PHA tau muaj kev paub dhau losplaub theem ntawm kev loj hlob.

Thawj tiam ntawm PHA, polyhydroxybutyrate (PHB), tau tsim los ntawm Chemie Linz AG hauv Austria hauv xyoo 1980s (ib xyoos ib zaug ntawm 100 tons).Raws li qhov ntxov tshaj plaws PHA series khoom siv, PHB kuj yog qhov yooj yim tshaj plaws thiab feem ntau cov qauv hauv PHA tsev neeg.Nws muaj cov txheej txheem siab tsis tu ncua, nyuaj thiab nkig, thiab nws cov khoom siv thiab cov ntsiab lus melting zoo ib yam li polypropylene (PP);tab sis lub elongation ntawm tawg Tsawg tus nqi, siab brittleness.Yog li, PHB feem ntau tsis tuaj yeem siv los ua ib qho khoom siv thiab yuav tsum tau hloov kho kom ua tiav qhov kev ua tau zoo.

Lub tiam thib ob ntawm PHA, polyhydroxybutyric acid copolyester (PHBV), tau ua lag luam los ntawm ICI hauv xyoo 1980s.PHBV yog PHA copolymer uas muaj qhov hnyav molecular ntau dua 300,000.PHBV, raws li kev txhim kho rau thawj tiam khoom PHB, tau zoo heev txhim kho nws elasticity tom qab ntxiv 3-hydroxyvalerate (3HV) monomer.Vim tias nws tuaj yeem decomposed tag nrho hauv compost, av, seawater thiab lwm qhov chaw, nws kuj muaj biocompatibility zoo thiab siab barrier kev ua tau zoo rau cov kua thiab gases, ua PHBV ib tug zoo tagnrho tib neeg cov ntaub so ntswg engineering khoom rau kev kho mob sutures.hlau, pob txha ntsia hlau, thiab lwm yam, thiab tseem tuaj yeem siv ua liaj ua teb mulch,hnab khoom, tableware thiab cov khoom ntim khoom noj.Tam sim no, cov txheej txheem tsim khoom ntawm PHBV cov khoom tau tsim ntxiv, thiab tau siv rau hauv cov tais golf,pov tseg tableware, films, phaj, ntim thiab lwm yam teb.

Lub cim thib peb ntawm PHA-poly 3-hydroxybutyrate-3-hydroxyhexanoate (PHBHHx), txij li xyoo 1998, Tsinghua University Microbiology Laboratory thiab Guangdong Jiangmen Biotechnology Development Center tau ua tiav kev tsim cov hydroxybutyric acid thawj zaug hauv ntiaj teb Kev tsim khoom siv thev naus laus zis ntawm copolymer. PHBHHx nrog hydroxycaproic acid, thiab paub txog kev tsim khoom loj.Piv nrog PHBV, PHBHHx muaj qis crystallinity thiab siab dua ductility, thiab nws cov kev ua tau zoo yog piv rau cov polyethylene (PE) yas.

Plaub tiam PHA-copolymer ntawm poly-3-hydroxybutyrate thiab 4-hydroxybutyrate (P3HB4HB lossis P34HB), muaj cov yeeb yaj kiab zoo thiab cov khoom siv lub cev, tab sis cov dej tsis zoo.Lub thib plaub tiam PHA tau pom zoo daim ntawv thov kev cia siab nyob rau hauv lub teb ntawm cov ntaub so ntswg engineering kev tshawb fawb, xws li scaffold cov ntaub ntawv nyob rau hauv cov pob txha cov ntaub so ntswg engineering mus thauj tib neeg pob txha pob txha mesenchymal qia hlwb, thiab lwm yam.

Vim tias PHA muaj biocompatibility zoo, biodegradability thiab thermal ua haujlwm ntawm cov yas tib lub sijhawm.Yog li ntawd, nws tuaj yeem siv los ua cov ntaub ntawv biomedical thiabbiodegradable ntim cov ntaub ntawvnyob rau tib lub sijhawm, uas tau dhau los ua qhov kev tshawb fawb tseem ceeb tshaj plaws hauv kev lag luam biomaterials hauv xyoo tas los no.PHA kuj muaj ntau yam khoom muaj nqis ntxiv xws li nonlinear optics, piezoelectricity, thiab roj barrier zog.

WorldChamp Enterprisesyuav npaj txhij txhua lub sij hawm los muab covECO cov khoomrau cov neeg siv khoom los ntawm thoob plaws lub ntiaj teb,hnab looj tes compostable, khoom noj khoom haus hnab, checkout hnab, thoob khib nyiab hnab,tais diav, khoom noj khoom haus, lwm.

WorldChamp Enterprises yog koj tus khub zoo tshaj plaws los siv cov khoom siv ECO, lwm txoj hauv kev ntawm cov khoom siv yas, los tiv thaiv cov pa phem dawb, ua rau peb cov dej hiav txwv thiab lub ntiaj teb huv thiab huv.