I-Cellulose yikhompawundi yendalo efumaneka kakhulu kwindalo, idlala indima ebalulekileyo kwisakhiwo kunye nomsebenzi wezinto eziphilayo ezahlukeneyo kunye ne-ecosystem. Iimpawu zayo ezikhethekileyo kunye nokuguquguquka kwazo kukhokelele kwiindlela ezahlukeneyo zokusetyenziswa kumashishini, nto leyo eyenza ukuba ibe yenye yezona biopolymers zibalulekileyo.
1. Imithombo yeCellulose:
I-Cellulose ngokuyintloko ifunyanwa kwiindonga zeeseli zezityalo, isebenza njengesakhi solwakhiwo ngendlela yee-microfibrils. Ifumaneka kwiindonga zeeseli zezicubu ezahlukeneyo zezityalo, kubandakanya umthi, umqhaphu, i-hemp, i-flax, i-jute, kunye nezinye ezininzi. Le mithombo yahlukile kumxholo we-cellulose kunye nolungelelwaniso lwesakhiwo, nto leyo echaphazela ukufaneleka kwayo kwiindlela ezahlukeneyo zokusetyenziswa.
Umthi: Umthi ngomnye wemithombo emininzi ye-cellulose, apho imithi efana nepayini, i-oki, kunye ne-spruce iqulethe ubungakanani obukhulu bale biopolymer. Isebenza njengesakhi esiphambili kwiindonga zeseli zezicubu ezinjengomthi, inika isityalo amandla kunye nokuqina.
Ikhotoni: Iifayibha zekhotoni zenziwe phantse yonke yi-cellulose, nto leyo eyenza ukuba zibe zizinto ezixabisekileyo zokwenza ilaphu. Iintambo ezinde, ezine-fibrous ze-cellulose zinegalelo ekuqineni, ekufunxeni nasekuphefumleni kwamalaphu ekhotoni, nto leyo eyenza ukuba afaneleke kakhulu kwiimpahla nakwimpahla zasekhaya.
I-Hemp kunye neFlax: Iifayibha ze-hemp kunye neflax nazo zizityebi kwi-cellulose kwaye bezisetyenziswa kwimbali yokuvelisa ilaphu. Ezi fayibha zendalo zibonelela ngokuqina, iipropati zokususa umswakama, kunye nokuzinza kokusingqongileyo, nto leyo eyenza ukuba zithandwe kakhulu kwilaphu elinobuhlobo nokusingqongileyo.
Ezinye Izinto Zezityalo: Ngaphandle kwemithombo ekhankanyiweyo apha ngasentla, i-cellulose inokukhutshwa kwezinye izinto zezityalo ezahlukeneyo ezifana ne-bamboo, i-sugar bagasse, i-corn stover, kunye neentsalela zezolimo. Le mithombo ikwanceda ekuveliseni iimveliso ezisekelwe kwi-cellulose ngendlela ezinzileyo ngelixa inciphisa ukuxhomekeka kwi-cellulose yemveli ephuma kwimithi.
2.Iimpawu zeCellulose:
I-Cellulose ineempawu ezahlukeneyo ezinegalelo kwizicelo zayo ezahlukeneyo:
Ukubola kwe-biogradability: I-Cellulose iyabola, oko kuthetha ukuba inokwahlulwahlulwa ziintsholongwane zibe ziikhompawundi ezilula ezifana ne-carbon dioxide namanzi. Le mpawu yenza izinto ezisekelwe kwi-cellulose zibe nobuhlobo nokusingqongileyo, ingakumbi xa kusetyenzwa apho ukulahla kunye nolawulo lwenkunkuma kuyingxaki.
Ukuthambeka kwamanzi: I-Cellulose inomdla omkhulu kwiimolekyuli zamanzi ngenxa yokubakho kwamaqela e-hydroxyl kwisakhiwo sayo semolekyuli. Olu hlobo lokuthambeka kwamanzi lwenza ukuba izinto ezisekwe kwi-cellulose zikwazi ukufunxa nokugcina amanzi, nto leyo eyenza ukuba zilungele ukusetyenziswa njengokwenza iphepha, ukugquma amanxeba, kunye neemveliso zococeko.
Amandla Oomatshini: Iifayibha ze-cellulose zinamandla oomatshini agqwesileyo, zibonelela ngokuqina nokuqina kwezinto ezenziwe ngazo. Le propati ibaluleke kakhulu kwizicelo ezifuna ukuqina kwesakhiwo, njengakwimpahla yelaphu, izinto ezidityanisiweyo, kunye neemveliso zephepha.
Ingahlaziywa kwaye Ihlala Ihleli: Njenge-biopolymer yendalo ephuma kwimithombo yezityalo, i-cellulose ivuseleleka kwaye ihlala ihleli. Imveliso yayo ayixhomekekanga kwimithombo yamafutha efosili enomda kwaye inokuba negalelo ekuthathweni kwekhabhoni xa ifunyanwa kumahlathi alawulwa ngokuthembekileyo kunye neendlela zolimo.
3.Izicelo ezahlukeneyo zeCellulose:
I-Cellulose isetyenziswa kakhulu kumashishini ahlukeneyo, ngenxa yeempawu zayo ezikhethekileyo kunye nokuguquguquka kwayo:
Iphepha kunye nokuPakisha: Mhlawumbi ukusetyenziswa kwe-cellulose okwaziwayo kukwenziwa kwephepha kunye nekhadibhodi. Iifayibha ze-cellulose zezona zinto ziphambili ezisetyenziswa ekwenzeni iphepha, zibonelela ngesakhelo solwakhiwo kunye neempawu zomphezulu ezifunekayo ekubhaleni, ekuprinteni, nasekupaketheni. Ukongeza, izixhobo zokupakisha ezisekelwe kwi-cellulose zibonelela ngezinye iindlela ezinobuhlobo nokusingqongileyo endaweni yokupakisha iplastiki yendabuko, zinegalelo kwimizamo yokuzinza.
Impahla Eyenziwe Ngelaphu: Iifayibha ze-cellulose ezivela kumqhaphu, i-hemp, i-flax, kunye nezinye izityalo zisontwa zibe yimisonto kwaye zilukwe okanye zithungwe zibe ngamalaphu eempahla, amalaphu asekhaya, kunye nokusetyenziswa kwemizi-mveliso. I-cotton, ngakumbi, yifayibha esekwe kwi-cellulose esetyenziswa kakhulu kwishishini lempahla ngenxa yokuthamba kwayo, ukuphefumla kwayo, kunye nokuguquguquka kwayo. Utshintsho kwiindlela zokucubungula lukwakhokelele ekuphuhlisweni kweefayibha ezisekwe kwi-cellulose ezifana ne-lyocell kunye ne-modal, ezibonelela ngeempawu eziphuculweyo kunye neenzuzo zokusingqongileyo.
Izixhobo zeBiomedical: Izixhobo ezisekelwe kwi-cellulose zisetyenziswa kwicandelo le-biomedical, kubandakanya ukugqunywa kwamanxeba, izikhonkwane zobunjineli bezicubu, iinkqubo zokuhambisa amayeza, kunye nokufakelwa kwezonyango. Ukuhambelana kwezinto eziphilayo kunye nokubola kwe-cellulose kwenza ukuba ifaneleke kwezo zicelo, apho ukusebenzisana neenkqubo zebhayoloji kubalulekile ekusebenzeni nasekukhuselekeni.
Imizi-mveliso yokutya kunye neyeza: Izinto eziphuma kwi-cellulose ezifana ne-cellulose ethers (umz., i-methylcellulose, i-carboxymethylcellulose) kunye ne-cellulose esters (umz., i-cellulose acetate, i-cellulose nitrate) zisetyenziswa njengezinto ezithibazayo, ezizinzisayo, ezixubayo, kunye nee-arhente ezenza ifilimu kwifomyula yokutya kunye neyeza. Ezi zongezo ezisekelwe kwi-cellulose ziphucula ubume, uzinzo kwishelufu, kunye nokuthandeka kweemveliso zokutya ngelixa ziqinisekisa ukusebenza kakuhle kokuhanjiswa kwamayeza kunye nokufana kwedosi kwifomyula yamayeza.
Amandla Ahlaziyekayo kunye neeBiofuels: I-biomass etyebileyo kwi-cellulose isebenza njengesondlo sokuvelisa amandla avuselelekayo kunye nee-biofuels ngeenkqubo ezifana ne-biomass gasification, i-fermentation, kunye ne-enzyme hydrolysis. I-Cellulosic ethanol, ephuma kwi-cellulose degradation, inika enye indlela ezinzileyo endaweni yeefosili kwaye inegalelo ekunciphiseni ukukhutshwa kwegesi ezibangela ukufudumala komhlaba.
Izinto ezidityanisiweyo: Iifayibha ze-cellulose zidityaniswe kwizinto ezidityanisiweyo ukuphucula iipropati zoomatshini ezifana namandla, ukuqina, kunye nokumelana nempembelelo. Ezi zixhobo ezidityanisiweyo ezisekelwe kwi-cellulose zifumana ukusetyenziswa kwizinto zeemoto, izixhobo zokwakha, ifenitshala, kunye neempahla zemidlalo, zibonelela ngezinye iindlela ezilula nezinobuhlobo nendalo kunezixhobo eziqhelekileyo.
I-Cellulose, njenge-biopolymer yendalo efumaneka kwiindonga zeeseli zezityalo, ineempawu ezikhethekileyo kunye nokusetyenziswa okwahlukeneyo kumashishini onke. Ukusuka ekwenzeni amaphepha kunye neempahla ukuya kwizixhobo zonyango kunye namandla avuselelekayo, i-cellulose inegalelo kuphuhliso oluzinzileyo kunye nokuvelisa izinto ezintsha kwiinkalo ezahlukeneyo. Uphando oluqhubekayo kunye nophuhliso lwetekhnoloji ekucutshungulweni nasekusetyenzisweni kwe-cellulose luthembisa ukwandisa ukusetyenziswa kwayo kunye nokujongana nemingeni yehlabathi enxulumene nokugcinwa kwezixhobo kunye nokuzinza kokusingqongileyo. Njengoko uluntu luqhubeka nokubeka phambili ukuzinza kunye nokuqonda indalo, izixhobo ezisekwe kwi-cellulose zikulungele ukudlala indima ebalulekileyo ekwakheni ikamva eliluhlaza nelizinzileyo.
Ixesha lokuthumela: Matshi-06-2024