Synthesis hamwe na Rheologiya Ibiranga Hydroxyethyl Cellulose Ether

Imbere ya catalizike yonyine ya alkali, hydroxyethyl yinganda selulose yakiriwe na N- (2,3-epoxypropyl) trimethylammonium chloride (GTA) cationisation reagent kugirango itegure amonium ya quaternary isimburwa cyane hakoreshejwe uburyo bwumye Ubwoko bwumunyu Hydroxyethyl selulose ether (HEC). Ingaruka z'ikigereranyo cya GTA na hydroxyethyl selulose (HEC), igipimo cya NaOH na HEC, ubushyuhe bwa reaction, hamwe nigihe cyo kubyitwaramo neza cyakorewe iperereza hamwe na gahunda yubushakashatsi bumwe, kandi uburyo bwiza bwo gukora bwabonetse binyuze muri Monte Kwigana Carlo. Kandi reaction ya reaction ya cationic etherification reagent igera kuri 95% binyuze mubigeragezo. Muri icyo gihe, imiterere ya rheologiya yaraganiriweho. Ibisubizo byerekanaga ko igisubizo cyaHEC yerekanye ibiranga amazi atari Newtonian, kandi ubwiza bwayo bugaragara bwiyongereye hamwe no kwiyongera kwumuti wibisubizo; muburyo bumwe bwumuti wumunyu, ikigaragara cyubwiza bwaHEC yagabanutse hamwe no kwiyongera k'umunyu wongeyeho. Munsi yikigereranyo kimwe, ikigaragara cya viscosity yaHEC muri sisitemu yo gukemura CaCl2 irarenze iyoHEC muri sisitemu yo gukemura.

Amagambo y'ingenzi:Hydroxyethylselile ether; inzira yumye; imiterere ya rheologiya

Cellulose ifite ibiranga amasoko akungahaye, ibinyabuzima bigabanuka, ibinyabuzima bihuza kandi byoroshye kubyara, kandi ni ahantu h’ubushakashatsi mu bice byinshi. Cationic selulose nimwe mubahagarariye byingenzi bikomoka kuri selile. Muri polymers cationic kubicuruzwa byumuntu ku giti cye byanditswe na CTFA y’ishyirahamwe ry’inganda za Fragrance, ikoreshwa ryayo ni irya mbere. Irashobora gukoreshwa cyane mubyongeweho umusatsi, korohereza, gucukura shale hydration inhibitor hamwe namaraso arwanya coagulation hamwe nizindi nzego.

Kugeza ubu, uburyo bwo gutegura amonium cateric hydroxyethyl selulose ether ya quaternary ni uburyo bwo gukemura, busaba ubwinshi bwimyanda ihenze, buhenze, butagira umutekano, kandi bwangiza ibidukikije. Ugereranije nuburyo bwo gukemura, uburyo bwumye bufite ibyiza byingenzi byuburyo bworoshye, gukora neza cyane, no kwanduza ibidukikije. Muri iyi nyandiko, cationic selulose ether yashizwemo nuburyo bwumye kandi imyitwarire yayo ya rheologiya yarizwe.

1. Igice cyubushakashatsi

1.1 Ibikoresho na reagent

Hydroxyethyl selulose (ibicuruzwa bya HEC, inganda zayo zisimbuza DS ni 1.8 ~ 2.0); cationisation reagent N- (2,3-epoxypropyl) trimethylammonium chloride (GTA), yateguwe na epoxy chloride Propane na trimethylamine yakozwe ubwayo mubihe bimwe; kwishyiriraho alkali; Ethanol na acide glacial acetike isesenguye neza; NaCl, KCl, CaCl2, na AlCl3 ni imiti yera neza.

1.2 Gutegura quaternary ammonium cationic selile

Ongeramo 5g ya hydroxyethyl selulose hamwe nigitigiri gikwiye cya catalizike yakozwe murugo muri silindrike yicyuma ya silindrike ifite moteri, hanyuma ukangure muminota 20 mubushyuhe bwicyumba; hanyuma ongeraho umubare runaka wa GTA, komeza ukangure muminota 30 mubushyuhe bwicyumba, hanyuma witondere kubushyuhe nigihe runaka, ibicuruzwa bikomeye byavanze cyane cyane byabonetse. Igicuruzwa kibisi cyinjijwe mumuti wa Ethanol urimo aside irike ikwiye, kuyungurura, gukaraba, no gukama vacuum kugirango ubone ifu ya quaternary ammonium cationic selulose.

1.3 Kumenya agace ka azote igice cya kane cya amonium cationic hydroxyethyl selulose

Igice kinini cya azote mu byitegererezo cyagenwe nuburyo bwa Kjeldahl.

2. Igishushanyo mbonera no gutezimbere inzira yumye

Uburyo bumwe bwo gushushanya bwakoreshejwe mugushushanya ubushakashatsi, hanyuma hakorwa iperereza ku ngaruka za GTA na hydroxyethyl selulose (HEC), igipimo cya NaOH na HEC, ubushyuhe bwa reaction nigihe cyo kubyitwaramo neza.

3. Ubushakashatsi ku miterere ya rheologiya

3.1 Ingaruka zo kwibanda hamwe n'umuvuduko wo kuzunguruka

Gufata ingaruka yikigero cyogukata kugaragara kugaragara kwaHEC mubitekerezo bitandukanye Ds = 0.11 nkurugero, birashobora kugaragara ko uko igipimo cyogosha kigenda cyiyongera kuva kuri 0.05 kugeza 0.5 s-1, ubwiza bugaragara bwaHEC igisubizo kiragabanuka, cyane cyane kuri 0.05 ~ 0.5s-1 bigaragara ko viscosity yagabanutse cyane kuva 160MPa·s kugeza 40MPa·s, kogosha, byerekana ko iHEC igisubizo cyamazi cyerekanaga imiterere ya rheologiya itari Newtonian. Ingaruka zo gukoreshwa kwimyitozo ngororamubiri ni ukugabanya imbaraga zikorana hagati yibice bitatanye. Mubihe bimwe, imbaraga nini, niko bigaragara cyane.

Irashobora kandi kugaragara uhereye kumyanya igaragara ya 3% na 4%HEC ibisubizo byamazi ko kwibumbira hamwe ari 3% na 4% kubiciro bitandukanye. Ikigaragara kigaragara cyibisubizo byerekana ko ubushobozi bwayo bwiyongera bwiyongera hamwe nibitekerezo. Impamvu nuko uko kwibanda kwiyongera muri sisitemu yo gukemura, kwanga hagati ya molekile zurunigi nyamukuru rwaHEC no hagati y'iminyururu ya molekile iriyongera, kandi ibigaragara bigaragara byiyongera.

3.2 Ingaruka yibitekerezo bitandukanye byumunyu wongeyeho

Kwibanda kwaHEC Byakosowe kuri 3%, kandi ingaruka zo kongeramo umunyu NaCl kumiterere yubwiza bwumuti byakorewe iperereza kubiciro bitandukanye.

Birashobora kugaragara mubisubizo ko ubwiza bugaragara bugabanuka hamwe no kwiyongera kwumunyu wongeyeho, byerekana ibintu bya polyelectrolyte bigaragara. Ni ukubera ko igice cya Na + mugisubizo cyumunyu gihujwe na anion yaHEC urunigi rw'uruhande. Uko ubunini bwumuti wumunyu bugenda bwiyongera, niko urwego rwo kutabogama cyangwa gukingira polyion hamwe na contion, no kugabanuka kwangwa na electrostatike, bigatuma kugabanuka kwubwinshi bwumuriro wa polyion. , urunigi rwa polymer rugabanuka kandi rugahinduka, kandi ikigaragara kigabanuka.

3.3 Ingaruka zumunyu wongeyeho kuri

Irashobora kugaragara uhereye kumyuka ibiri itandukanye yongeyeho umunyu, Nacl na CaCl2, kumyambarire igaragara yaHEC igisubizo ko ububobere bugaragara bugabanuka hiyongereyeho umunyu wongeyeho, kandi ku kigero kimwe cyogosha, ubwiza bugaragara bwaHEC igisubizo muri sisitemu yo gukemura ya CaCl2 Ikigaragara kigaragara ni hejuru cyane kuruta iyoHEC igisubizo muri NaCl sisitemu yo gukemura. Impamvu nuko umunyu wa calcium ari ion ihwanye, kandi biroroshye guhambira kuri Cl- yumunyururu wa polyelectrolyte. Ihuriro ryitsinda rya amonium ya kaneHEC hamwe na Cl- iragabanuka, kandi gukingira ni bike, kandi ubwinshi bwamafaranga yumurongo wa polymer ni mwinshi, bikaviramo kwangwa na electrostatike kwangwa kumurongo wa polymer nini, kandi urunigi rwa polymer rurarambuye, kuburyo bigaragara ko ububobere bugaragara buri hejuru.

4. Umwanzuro

Gutegura byumye bya selile cationic yasimbuwe cyane nuburyo bwiza bwo gutegura hamwe nuburyo bworoshye, gukora neza cyane, hamwe n’umwanda muke, kandi birashobora kwirinda gukoresha ingufu nyinshi, kwangiza ibidukikije, nuburozi buterwa no gukoresha imiti.

Igisubizo cya cationic selulose ether yerekana ibiranga amazi atari Newtonian kandi ifite ibiranga kunanuka; uko igisubizo cya misa cyiyongera, kugaragara kwayo kugaragara; muburyo bumwe bwumuti wumunyu,HEC ikigaragara cyijimye cyiyongera hamwe no kwiyongera no kugabanuka. Munsi yikigereranyo kimwe, ikigaragara cya viscosity yaHEC muri sisitemu yo gukemura CaCl2 irarenze iyoHEC muri sisitemu yo gukemura.