Ngaba i-polyanionic cellulose i-polymer

I-Polyanionic cellulose (PAC) ngokwenene i-polymer, ngokukodwa i-derivative ye-cellulose. Le khompawundi inomdla ifumana usetyenziso olubanzi kuwo wonke amashishini ahlukeneyo ngenxa yeempawu zayo ezizodwa kunye nokusebenza.

Ubume bePolyanionic Cellulose:

I-Polyanionic cellulose ithathwe kwi-cellulose, enye yezona polymers zendalo zininzi emhlabeni. I-Cellulose yi-polysaccharide ehambelanayo eyenziwe ngamacandelo aphindaphindiweyo e-glucose adityaniswe kunye ne-β (1→ 4) iibhondi ze-glycosidic. Yenza icandelo eliphambili leendonga zeeseli zesityalo. I-cellulose ye-Polyanionic i-cellulose eguqulwayo, apho amanye amaqela e-hydroxyl amatyathanga e-cellulose athatyathwa ngamaqela e-anionic. La maqela e-anionic ahlala ebandakanya i-carboxylate (-COO⁻), i-sulfonate (-SO₃⁻), okanye i-phosphate (-PO₄⁻) amaqela. Ukuqaliswa kwala maqela e-anionic kunika ukunyibilika kwamanzi kunye nezinye iimpawu ezinqwenelekayo kwipolymer.

Ukwenziwa kwePolyanionic Cellulose:

I-Polyanionic cellulose idla ngokudityaniswa ngokuguqulwa kweekhemikhali zeselulosi. Enye indlela eqhelekileyo ibandakanya ukuphendula i-cellulose kunye nekhompawundi ye-anhydride phantsi kweemeko ezithile ukwazisa amaqela e-anionic kwi-cellulose backbone. Iimeko zokusabela kunye nohlobo lwe-anhydride esetyenzisiweyo lumisela iqondo lokuthatha indawo (DS) yamaqela e-anionic kwikhonkco leselulosi. Amaxabiso aphezulu e-DS abangela ukunyibilika okukhulu kwamanzi kunye nokusebenza okuphuculweyo kwizicelo ezithile.

Iipropati zePolyanionic Cellulose:

I-Polyanionic cellulose ibonisa iipropathi ezininzi ezizodwa eziyenza ilungele uluhlu olubanzi lwezicelo:

Ukunyibilika kwamanzi: Ukuqaliswa kwamaqela e-anionic kunika ukunyibilika kwamanzi kwi-polyanionic cellulose, evumela ukuba yenze izisombululo ezizinzileyo okanye ukusabalalisa emanzini. Le propati iluncedo ngokukodwa kwizicelo apho iinkqubo ezisekelwe emanzini zikhethwa.

Ukuguqulwa kwe-Thickening kunye neRheology: I-cellulose ye-Polyanionic isetyenziswa ngokubanzi njenge-agent ekhulayo kunye ne-rheology modifier kumashishini ahlukeneyo, kuquka ukutya, amayeza, kunye neemveliso zokhathalelo lomntu. Inika i-viscosity kwaye iphucula ukuzinza kunye nokuthungwa kwezinto ezenziweyo.

I-Flocculation and Fluid Los Control: Kumashishini afana nokugrumba i-oyile, i-polyanionic cellulose isetyenziselwa ukukwazi ukujikeleza izinto eziqinileyo kunye nokulawula ukulahlekelwa kwamanzi. Inceda ukugcina uzinzo kwi-wellbore kwaye iphucula ukusebenza kakuhle kokomba.

Ukuhambelana: I-cellulose ye-Polyanionic iyahambelana noluhlu olubanzi lwezinye iikhemikhali kunye nezongezo, okwenza kube yinto eguquguqukayo yokuqulunqwa kwizicelo ezahlukeneyo. Inokufakwa ngokulula kwiinkqubo ezahlukeneyo ngaphandle kokubangela imiba yokuhambelana.

I-Biodegradability: Ngaphandle kokuguqulwa kwayo okwenziweyo, i-polyanionic cellulose igcina i-biodegradability ye-cellulose. Olu phawu lubalulekile ekunciphiseni impembelelo yokusingqongileyo, ngakumbi kwizicelo apho ukulahlwa kuyinkxalabo.

Ukusetyenziswa kwePolyanionic Cellulose:

Iselulosi yePolyanionic ifumana usetyenziso olwahlukeneyo kumashishini amaninzi:

Ishishini leoli negesi: Kwicandelo le-oyile negesi, iPAC iqhele ukusetyenziswa njenge-viscosifier kunye ne-fluid loss control additive in drilling fluids. Inceda ukugcina uzinzo lwe-wellbore, iphucula ukucocwa kwemingxuma, kwaye iphucula ukusebenza kakuhle kokomba.

Ishishini lokutya: Kushishino lokutya, iPAC isebenza njenge-arhente etyebisayo, i-stabilizer, kunye ne-texturizer kwiimveliso ezahlukeneyo ezifana neesosi, izinxibo, iimveliso zobisi, kunye nezimuncumuncu. Iphucula umlomo, iphucula ukuzinza, kwaye ikhusela i-syneresis ekuqulunqweni kokutya.

I-Pharmaceuticals: I-cellulose ye-Polyanionic isetyenziswe kwiifomyula zamachiza njenge-binder, i-disintegrant, kunye ne-ejenti yokukhululwa elawulwayo kwiipilisi kunye nee-capsules. Inceda ekudibaneni kwethebhulethi, iqinisekisa ukukhutshwa kweziyobisi ezifanayo, kwaye iphucula ukuthotyelwa kwesigulane.

Iimveliso zoNonophelo lomntu: Kwiimveliso zokhathalelo lomntu, iPAC iqeshwe njenge-thickener, i-agent yokumisa, kunye ne-emulsion stabilizer kwiimveliso ezifana ne-shampoos, lotions, kunye ne-creams. Iphucula i-viscosity yemveliso, iphucula ukuthungwa, kwaye inqande ukuhlukana kwesigaba.

Izinto zokwakha: I-PAC isetyenziswa kushishino lokwakha njenge-arhente yokugcina amanzi, i-thickener, kunye ne-rheology modifier kwimixube esekwe kwisamente efana nodaka, iigrouts, kunye nodaka. Iphucula ukusebenza, inciphisa ilahleko yamanzi, kwaye iphucula ukunamathela kwi-substrates.

Impembelelo yokusingqongileyo kunye noZinzo:

Ngelixa i-polyanionic cellulose ibonelela ngeenzuzo ezahlukeneyo malunga nokusebenza kunye nokusebenza, ifuthe layo lokusingqongileyo kufuneka liqwalaselwe. Njengenye yezinto eziphuma kwi-cellulose, iPAC igcina i-biodegradability ye-polymer engumzali wayo. Oku kuthetha ukuba phantsi kweemeko ezifanelekileyo, i-cellulose ye-polyanionic inokuchithwa yi-microorganisms ibe yimveliso engenabungozi, igalelo ekuzinzeni kwendalo.

Ngaphaya koko, indalo ehlaziyekayo yeselulosi njengesixhobo ekrwada sePAC synthesis inika inzuzo malunga nokufumaneka kwesixhobo kunye nokuncipha kokuxhomekeka kumafutha efosili. Iinzame ziyaqhuba zokwandisa inkqubo yodibaniso kunye nokuphucula ukonakaliswa kwezinto eziphuma kwipolyanionic cellulose ukunciphisa unyawo lwazo lokusingqongileyo.

I-polyanionic cellulose yipolymer eguquguqukayo evela kwiselulosi, ebonelela ngoluhlu olubanzi lwezicelo kumashishini ahlukeneyo. Iimpawu zayo ezizodwa, ezibandakanya ukunyibilika kwamanzi, amandla okuqina, ukuhambelana, kunye nokubola kwe-biodegradability, kuyenza ibe sithako esixabiseke kakhulu kwimixube emininzi. Ngelixa ukubonelela ngeenzuzo zokusebenza ezibalulekileyo, iinzame ziyaqhubeka zokuqinisekisa ukuba i-polyanionic cellulose kunye nezinto eziphuma kuyo ziveliswa kwaye zisetyenziswe ngendlela enoxanduva lokusingqongileyo, ngaloo ndlela kulungelelaniswa iimfuno zemizi-mveliso kunye neenjongo zozinzo.