Hydroxyethyl Cellulose pH Yumva?

Hydroxyethylcellulose (HEC) ni polymer idafite amazi ya elegitoronike ikoreshwa cyane mu gutwikira, kwisiga, ibikoresho byo kubaka, ubuvuzi n’inganda. Igikorwa cyacyo nyamukuru ni nkibibyibushye, bihagarika, ibikorwa bya firime na stabilisateur, bishobora guteza imbere imiterere yimiterere yibicuruzwa. HEC ifite ibisubizo byiza, kubyimba, gukora firime no guhuza, bityo itoneshwa mubice byinshi. Ariko, kubijyanye no guhagarara kwa HEC nigikorwa cyayo mubidukikije bitandukanye pH, nikintu cyingenzi kigomba gusuzumwa mubikorwa bifatika.

Kubijyanye na pH sensitivite, hydroxyethylcellulose, nka polymer itari ionic, mubisanzwe ntabwo yunvikana nimpinduka za pH. Ibi bitandukanye nibindi byongera ionic (nka carboxymethylcellulose cyangwa polymers zimwe na zimwe za acrylic), zirimo amatsinda ya ionic mumiterere ya molekile kandi zikunda gutandukana cyangwa ionisiyonike mubidukikije bya acide cyangwa alkaline. , bityo bigira ingaruka kubyimbye hamwe na rheologiya yibisubizo. Kuberako HEC idafite amafaranga yishyurwa, ingaruka zayo zo kubyimba hamwe nubushobozi bwo gukemura bikomeza kuba byiza cyane murwego rugari rwa pH (mubisanzwe pH 3 kugeza pH 11). Iyi mikorere ituma HEC ihuza na sisitemu zitandukanye zo gukora kandi irashobora kugira ingaruka nziza mubyimbye munsi ya acide, itabogamye cyangwa idafite alkaline.

Nubwo HEC ifite ituze ryiza mubihe byinshi bya pH, imikorere yayo irashobora kugira ingaruka kubidukikije bikabije bya pH, nka acide cyane cyangwa alkaline. Kurugero, mugihe cya acide cyane (pH <3), gukomera kwa HEC birashobora kugabanuka kandi ingaruka zo kubyimba ntizishobora kuba ingirakamaro nko mubutabogamye cyangwa acide nkeya. Ni ukubera ko hydrogene ion irenze urugero bizagira ingaruka kumihindagurikire ya molekile ya HEC, bigabanye ubushobozi bwo gukwirakwiza no kubyimba mumazi. Mu buryo nk'ubwo, mubihe bya alkaline cyane (pH> 11), HEC irashobora kwangirika igice cyangwa guhindura imiti, bikagira ingaruka kumubyimba.

Usibye gukemuka ningaruka zibyibushye, pH irashobora no kugira ingaruka kubihuza HEC nibindi bice bigize formulaire. Mubidukikije bitandukanye bya pH, ibintu bimwebimwe bikora birashobora ionize cyangwa gutandukana, bityo bigahindura imikoranire yabo na HEC. Kurugero, mubihe bya acide, ibyuma bimwe na bimwe byuma cyangwa ibikoresho bya cationic bikora bishobora gukora ibice hamwe na HEC, bigatuma ingaruka zayo zibyimba bigabanuka cyangwa bigwa. Kubwibyo, mugushushanya, imikoranire hagati ya HEC nibindi bikoresho mubihe bitandukanye bya pH bigomba kwitabwaho kugirango habeho ituze n'imikorere ya sisitemu yose.

Nubwo HEC ubwayo itumva neza impinduka za pH, igipimo cyayo cyo gusesa hamwe nuburyo bwo gusesa bishobora guterwa na pH. Ubusanzwe HEC irashonga vuba mugihe kidafite aho kibogamiye cyangwa acide nkeya, mugihe mubihe bya acide cyangwa alkaline cyane inzira yo gusesa irashobora kugenda gahoro. Kubwibyo, mugihe utegura ibisubizo, akenshi birasabwa kubanza kongeramo HEC kumuti wamazi utabogamye cyangwa hafi-utabogamye kugirango umenye neza ko ushonga vuba kandi neza.

Hydroxyethylcellulose (HEC), nka polymer itari ionic, ntabwo yunvikana kuri pH kandi irashobora gukomeza ingaruka zifatika zifatika hamwe nubushobozi bwo gukemura hejuru ya pH. Imikorere yayo irasa neza murwego rwa pH 3 kugeza pH 11, ariko muri acide ikabije hamwe na alkali ibidukikije, ingaruka zayo zo kubyimba no gukomera birashobora kugira ingaruka. Kubwibyo, mugihe usaba HEC, nubwo mubihe byinshi bidakenewe ko twita cyane kumihindagurikire ya pH, mubihe bikabije, ibizamini bikwiye hamwe nibihinduka biracyasabwa kugirango habeho ituze n'imikorere ya sisitemu.