Hydroxyethyl selulose (HEC) ni polymer idafite ionic, amazi-elegitoronike ikomoka kuri selile ikoresheje guhindura imiti.Irasanga ikoreshwa cyane mubikorwa bitandukanye bitewe nimiterere yihariye, nko kubyimba, gutuza, hamwe nubushobozi bwo gukora film.Mubisabwa aho pH ihagaze neza, gusobanukirwa uburyo HEC yitwara mubihe bitandukanye bya pH ni ngombwa.
PH ihagaze neza ya HEC bivuga ubushobozi bwayo bwo gukomeza ubusugire bwimiterere, imiterere ya rheologiya, hamwe nibikorwa murwego rwibidukikije bya pH.Uku gushikama ni ingenzi mubisabwa nkibicuruzwa byita ku muntu, imiti, imiti, ibikoresho byubwubatsi, aho pH yibidukikije bishobora gutandukana cyane.
Imiterere:
HEC isanzwe ikomatanyirizwa mugukora selile hamwe na okiside ya Ethylene mubihe bya alkaline.Iyi nzira itera gusimbuza hydroxyl matsinda yumugongo wa selile hamwe na hydroxyethyl (-OCH2CH2OH).Urwego rwo gusimbuza (DS) rwerekana impuzandengo ya hydroxyethyl matsinda kuri anhydroglucose murwego rwa selile.
Ibyiza:
Gukemura: HEC irashonga mumazi kandi ikora ibisubizo bisobanutse neza.
Viscosity: Yerekana imyitwarire ya pseudoplastique cyangwa yogosha, bivuze ko ububobere bwayo bugabanuka mugihe cyo guhangayika.Iyi mitungo ituma iba ingirakamaro mubisabwa aho gutembera ari ngombwa, nk'amabara hamwe.
Kubyimba: HEC itanga viscosity kubisubizo, ikagira agaciro nkibikoresho byiyongera muburyo butandukanye.
Gukora firime: Irashobora gukora firime zoroshye kandi zibonerana mugihe zumye, zikaba zifite akamaro mubisabwa nka adhesives na coatings.
pH Guhagarara kwa HEC
Imiterere ya pH ya HEC iterwa nibintu byinshi, harimo imiterere yimiti ya polymer, imikoranire nibidukikije, hamwe ninyongeramusaruro zose ziboneka.
pH ituze rya HEC mubice bitandukanye bya pH:
1. Acide pH:
Kuri acide pH, muri rusange HEC irahagaze neza ariko irashobora gukorerwa hydrolysis mugihe kinini mugihe cya acide ikaze.Nyamara, mubikorwa byinshi bifatika, nkibicuruzwa byumuntu ku giti cye hamwe n’ibifuniko, aho pH ihura na aside, HEC ikomeza guhagarara neza mubisanzwe pH (pH 3 kugeza 6).Kurenga pH 3, ibyago bya hydrolysis biriyongera, bigatuma kugabanuka gahoro gahoro kwijimye no gukora.Ni ngombwa gukurikirana pH yimikorere irimo HEC no kuyihindura nkibikenewe kugirango umutekano ubeho.
2. Kutabogama pH:
HEC yerekana ituze ryiza mubihe bitagira aho bibogamiye pH (pH 6 kugeza 8).Uru rutonde rwa pH rusanzwe mubikorwa byinshi, harimo kwisiga, imiti, nibicuruzwa byo murugo.HEC irimo formulaire igumana ubwiza bwayo, kubyimbye, hamwe nibikorwa muri rusange murwego rwa pH.Nyamara, ibintu nkubushyuhe nimbaraga za ionic birashobora guhindura ituze kandi bigomba kwitabwaho mugihe cyiterambere.
3. Alkaline pH:
HEC ntabwo ihagaze neza mubihe bya alkaline ugereranije na acide cyangwa pH idafite aho ibogamiye.Ku rwego rwo hejuru rwa pH (hejuru ya pH 8), HEC irashobora kwangirika, bigatuma kugabanuka kwijimye no gutakaza imikorere.Alkaline hydrolysis ya ether ihuza umugongo wa selile na groupe hydroxyethyl irashobora kubaho, bigatuma habaho urunigi no kugabanya uburemere bwa molekile.Kubwibyo, muburyo bwa alkaline nkibikoresho cyangwa ibikoresho byubwubatsi, ubundi polymer cyangwa stabilisateur birashobora guhitamo kuruta HEC.
Ibintu bigira ingaruka kuri pH
Ibintu byinshi bishobora guhindura pH ituze rya HEC:
Impamyabumenyi yo gusimbuza (DS): HEC ifite agaciro gakomeye ka DS ikunda guhagarara neza murwego rwagutse rwa pH bitewe no kongera gusimbuza amatsinda ya hydroxyl hamwe nitsinda rya hydroxyethyl, ibyo bikaba byongera imbaraga zo gukemura amazi no kurwanya hydrolysis.
Ubushyuhe: Ubushyuhe bwo hejuru burashobora kwihutisha imiti, harimo hydrolysis.Kubwibyo, kubungabunga ububiko bukwiye no gutunganya ubushyuhe nibyingenzi mukuzigama pH ituze ya HEC irimo formulaire.
Imbaraga za Ionic: Ubwinshi bwumunyu cyangwa izindi ion muburyo bwo gukora birashobora kugira ingaruka kumitekerereze ya HEC muguhindura imbaraga zayo no gukorana na molekile zamazi.Imbaraga za Ionic zigomba kuba nziza kugirango hagabanuke ingaruka zihungabanya umutekano.
Inyongeramusaruro: Kwinjizamo inyongeramusaruro nka surfactants, preservatives, cyangwa buffering agent birashobora kugira ingaruka kuri pH ituze rya HEC.Igeragezwa ryubwuzuzanye rigomba gukorwa kugirango hongerwemo guhuza no gutuza.
Gusaba no Gutekereza
Gusobanukirwa pH ihamye ya HEC ningirakamaro kubashinzwe gukora inganda zitandukanye.
Hano hari bimwe byihariye bisabwa:
Ibicuruzwa byawe bwite: Muri shampo, kondereti, n'amavuta yo kwisiga, kubungabunga pH murwego rwifuzwa (mubisanzwe bitagira aho bibogamiye) byemeza ituze hamwe nimikorere ya HEC nkumubyimba kandi uhagarika.
Imiti: HEC ikoreshwa muguhagarika umunwa, ibisubizo byamaso, hamwe nibisobanuro byingenzi.Ibiteganijwe bigomba gutegurwa no kubikwa mubihe bibungabunga umutekano wa HEC kugirango ibicuruzwa bikorwe neza kandi birambe.
Ipitingi n'irangi: HEC ikoreshwa nk'impinduka ya rheologiya kandi ikabyimbye mu marangi ashingiye ku mazi.Abashinzwe gutegura bagomba guhuza pH ibisabwa nibindi bipimo ngenderwaho nko kwiyegeranya, kuringaniza, no gukora firime.
Ibikoresho byubwubatsi: Mubikorwa bya simaitima, HEC ikora nkumukozi wo kubika amazi kandi itezimbere imikorere.Nyamara, imiterere ya alkaline muri sima irashobora guhangana na HEC itajegajega, bisaba guhitamo neza no guhindura imikorere.
Hydroxyethyl selulose (HEC) itanga imiterere yingirakamaro kandi ikora mubikorwa bitandukanye.Gusobanukirwa pH ihamye ningirakamaro kubashinzwe gutegura iterambere rihamye kandi ryiza.Mugihe HEC yerekana ituze ryiza mubihe pH idafite aho ibogamiye, hagomba gutekerezwa kubidukikije bya acide na alkaline kugirango birinde kwangirika no gukora neza.Muguhitamo icyiciro cya HEC gikwiye, guhitamo ibipimo ngenderwaho, no gushyira mubikorwa uburyo bwo kubika neza, abashinzwe gukora barashobora gukoresha inyungu za HEC murwego runini rwibidukikije bya pH.
Igihe cyo kohereza: Werurwe-29-2024