Kukula kwa cellulose ether

Cellulose earsKodi gulu la polima losiyanasiyana limagwiritsidwa ntchito kwambiri pamakampani osiyanasiyana chifukwa cha zomwe awonjezere. Kuyambira ndi mawu oyamba kwa cellulose etter etters, zojambula zawo, pepalali limaperekanso njira zomwe zimagwirizanitsa momwe zimakhalira kukula, kupangitsa momwe ma tekisiri awo amathandizira mamolekyulu amadzi. Mitundu yosiyanasiyana ya cellulose imakambidwa, kuphatikiza methyl cellulose, hydroxthyl cellulose, hydroxypropyl cellulose, ndi carboxymethl cellulose, iliyonse yokhala ndi mawonekedwe amtundu wapadera. Mapulogalamu a cellosese yokhala ndi mafakitale monga zomangamanga, mankhwala, zodzola, komanso chisamaliro chaumwini, ndikuwonetsa mbali yawo yopanga. Pomaliza, tanthauzo la celluse yokhazikika mu mafakitale amakono limatsimikizika, komanso chidwi chamtsogolo komanso chitukuko chamitseko cha celluse ether.

Cellulose eyange akuimira gulu la anthu omwe amachokera ku cellulose, biopolymer biopolymer yopezeka kwambiri muzomera kukhoma la cell. Ndi zojambula zapadera zamankhwala, cellulosese yokhazikika zimagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, makamaka chifukwa cha mphamvu zawo. Kutha kwa cellulose ed kuti uwonjezere mawonekedwe a ma Iscc ndikuwongolera mipweya yosiyanasiyana imawapangitsa kuti akhale ofunika kwambiri pakupanga zida zomanga zamalonda.

1. Zowopsa za cellulose et

Musanatsuke mu kukula kwa mankhwala a cellulose, ndikofunikira kuti mumvetsetse zinthu zawo. Cellulose amaphatikizika kudzera mu kusintha kwa mankhwala kwa cellulose, makamaka yokhudza kusintha kwa chikhumi. Magulu a hydroxyl (-Oh) omwe alipo mu cellulose regocbone pansi mwamphamvu zomwe zimachitika ndi ma ether magulu (-), komwe R imayimira m'malo osiyanasiyana. Izi zolowa zimakhudza kusintha kwa maselo ndi katundu wa cellulose, kupereka mawonekedwe osiyana cellose eder.

Zosintha zosintha mu cellose etress zimalimbikitsa kusandulika kwawo, zachiwerewere, komanso zokumba. Mulingo wa zolowa m'malo mwake, zomwe zimatanthauza kuchuluka kwa ma hydroxyl a boryroglucose pa unit, imachita mbali yofunika kudziwa zinthu zomwe zimapangidwira. Ds wapamwamba kwambiri nthawi zambiri amagwirizana ndi zochulukitsa ndikukula bwino.

2.Meanischaisms ya kukula

Kukula kwa kukula kowonetsedwa ndi cellulose kumayambira pakuyamikiridwa kwawo ndi mamolekyulu amadzi. Mukabalalika m'madzi, cellulose etration hydration, momwe mamolekyu amadzi amapangira ma hydrogen maatomu a ethergen ndi magulu a hydroxyl a maunyolo a polymer. Njira yama hydration iyi imatsogolera ku kutupa kwa cellulose ether etherment ndi mapangidwe a mawonekedwe atatu okhala ndi mawonekedwe am'madzi.

Kukakamira kwa ma elelul cellulose ndi mapangidwe a ngodya za hydrogen pakati pa mamolekyulu a polymer amathandizira kupititsa patsogolo. Kuphatikiza apo, magetsi a magetsi pakati pa ma etherser madera ena amathandizira pofuna kunyamula maunyolo oyandikira ndikupititsa patsogolo kubadwa mu zosungunulira.

Khalidwe la zikhalidwe za ma elelulose ethel ethel solids imakhudzidwa ndi zinthu monga polymer ndende, digiri ya kulowetsedwa, kunenepa kwambiri, ndi kutentha. Pamapeto otsika, ma cellulose othetsera kuwonetsa machitidwe a Newtonia, pomwe pamalo okwera kwambiri, amawonetsa machitidwe a pseudoplastic kapena shear.

3.TTpes of Cellulose et
Cellulose et ankalemes, aliyense akupereka katundu wokulirapo woyenera kugwiritsa ntchito zinthu zosiyanasiyana. Mitundu yomwe imagwiritsidwa ntchito kwambiri ya cellulose yophatikizira:

Methyl cellulose (Mc): Methyl cellulose imapezeka ndikukulitsa cellulose ndi magulu a methyl. Imasungunuka m'madzi ozizira ndi mitundu yowoneka bwino, mayankho a viscous. MC imawonetsa bwino zosamalira madzi ndipo nthawi zambiri amagwiritsidwa ntchito ngati wokulirapo m'mabalika, zokutira, ndi zinthu zina.

Hydroxyethyl cellulose (hec): hydroxyethyl cellulose ndi synthesi

Zed poyambitsa ma gydroxyethyl magulu am'deralo a cellulose. Imasungunuka m'madzi onse ozizira komanso otentha ndikuwonetsa machitidwe a pseudoplactic. Hec amagwiritsidwa ntchito kwambiri m'mapangidwe ogulitsa mankhwala, zinthu zachinsinsi, komanso ngati thiccener m'matumba a lambi.

Hydroxypropyl cellulose (hpc): hydroxypyl cellulose yakonzedwa ndikusintha kwa cellulose ndi magulu a hydroxypyl. Imasungunuka pamitundu yosiyanasiyana, kuphatikizapo madzi, mowa, komanso ma sol sol sol. HPC imagwiritsidwa ntchito ngati Thicker, Bander, ndi wothandizira makanema pa mankhwala, zodzoladzola, ndi zokutira.

Carboxymethyl cellulose (cmc): Carboxymethyl cellose imapangidwa ndi carboxymethy hymethymet ya cellulose ndi acid acid kapena mchere wa sodium. Imasungunuka kwambiri m'madzi ndikupanga ma viscous mayankho okhala ndi ma preeudoplastic. CMC imapeza mapulogalamu ambiri mu zakudya, mankhwala opangira mankhwala, zolemba, ndi kupanga mapepala.

Ma celloulose awa akuwonetsa zopindika, kusagwirizana, komanso kuphatikizidwa ndi zosakaniza zina, zimapangitsa kuti akhale oyenera pamakampani osiyanasiyana.

4.Pappecation of cellose etrase
Kutulutsa kotheratu kwa cellulose etres kumawapangitsa kuti akhale ofunikira pakugwiritsa ntchito mafakitale osiyanasiyana. Mapulogalamu ena ofunikira a cellulose eder edew

Zipangizo zomangira: cellulose yopangidwa ndi zowonjezera zomwe zimawonjezera zida zamiyeso monga matope, grout, ndi pulasitala kuti azitha kuvuta, kusungidwa kwamadzi, komanso kutsatira. Amakhala ngati rheology osintha, kupewa tsankho ndikuwonjezera ntchito yomanga.

Mankhwala opanga mankhwala: cellulose etyala amapeza mapulogalamu ambiri opanga mankhwala ngati omanga, kusokoneza, komanso othandizira m'mapiritsi, mapiritsi, ndi osintha ma ophthalmic. Amasintha zochulukitsa za ufa, kutsogolera piritsi, ndikuwongolera kutulutsidwa kwa zosankha.

Zakudya: Cellulose, nthawi zambiri amagwiritsidwa ntchito ngati kukula, kukhazikika, komanso kukhazikika pamitundu yambiri, kuphatikizapo msuzi, mavalidwe, zakudya, zinthu zamkaka. Amawonjezera kapangidwe, mamasukidwe, komanso pakamwa pakamwa pomwe amakonza masiketi ndikuletsa syneresis.

Zodzikongoletsera komanso chisamaliro chaumwini: cellulose yogwiritsidwa ntchito mu zodzoladzola komanso zinthu zachinsinsi monga zonona, zotupa, ma shamsis, ndi mankhwala okuzirana, komanso othandizira makanema. Amapatsa mphamvu zabwino zambiri, kuwonjezera pa zinthu zolimbitsa thupi, ndikupereka mawonekedwe osalala, owoneka bwino.

Utoto ndi zokutira:Cellulose earsTumikirani monga Rheogy zowongolera zotupa, zowonjezera, ndi zomatira, kukonza mafaloni a Viccn, kutha kukana, ndi mapangidwe filimu. Amathandizira kukhazikika kwa mapangidwe, kupewa utoto wokhazikika, komanso kugwiritsa ntchito katundu.

Mphamvu ya kukula kwa cellulose imakhudza mbali yofunika kwambiri yopanga mafakitale ndi mapangidwe ake. Makhalidwe awo apadera azikhalidwe, kuphatikizidwa ndi zosakaniza zina, ndipo biodegradiation zimawapangitsa kusankha ngati amakonda omwe amakonda opanga m'magulu osiyanasiyana. Pamene mafakitale akupitilizabe kuyika njira zokwanira komanso zothetsera ma eco, zomwe zimapangitsa kuti cellulose ikhale ikuyenera kukwera.