Ibyiza bya Cationic Cellulose Ether Igisubizo

Umuti wo gukemura ibintu bya charge-density cationic selulose ether (KG-30M) kubiciro bitandukanye bya pH byizwe hamwe nigikoresho cyo gukwirakwiza laser, uhereye kuri radiyo hydrodynamic (Rh) kumpande zitandukanye, kandi umuzi bisobanura radiyo kare yo kuzunguruka. Rg Ikigereranyo na Rh cyerekana ko imiterere yacyo idasanzwe ariko yegereye serefegitura.Hanyuma, hifashishijwe rheometero, ibisubizo bitatu byibanze kuri cateric selulose ethers hamwe nubucucike butandukanye bwizwe byakozweho ubushakashatsi burambuye, maze haganirwaho ingaruka ziterwa no kwibanda, agaciro ka pH hamwe nubucucike bwacyo ubwabyo kumiterere ya rheologiya.Nkuko kwibandaho byiyongereye, uwerekanye Newton yabanje kugabanuka hanyuma aragabanuka.Guhindagurika cyangwa no kwisubiramo bibaho, kandi imyitwarire ya thixotropique iba kuri 3% (agace kinshi).Ubucucike buringaniye buringaniye ni ingirakamaro kubona zeru-zeru nyinshi, kandi pH ntigira ingaruka nke mubwiza bwayo.

Amagambo y'ingenzi:cationic selulose ether;morphologie;ubukonje bwa zeru;rheologiya

Ibikomoka kuri selile hamwe na polymers zahinduwe zagiye zikoreshwa cyane mubijyanye n’ibicuruzwa by’umubiri n’isuku, ibikomoka kuri peteroli, imiti, ibiryo, ibicuruzwa byita ku muntu, gupakira, n’ibindi. ubushobozi, ikoreshwa cyane mumiti ya buri munsi, cyane cyane shampo, kandi irashobora kunoza umusatsi nyuma yo kwiyuhagira.Igihe kimwe, kubera guhuza neza kwayo, irashobora gukoreshwa muri bibiri-imwe-imwe-yose-imwe-imwe.Ifite kandi ibyifuzo byiza byo gusaba kandi byashimishije ibihugu bitandukanye.Mu bitabo byavuzwe ko ibisubizo bikomoka kuri selulose byerekana imyitwarire nk'amazi ya Newtonian, fluid pseudoplastique, thixotropic fluid na viscoelastic fluid hamwe no kwiyongera kwinshi, ariko morphologie, rheologiya hamwe ningaruka ziterwa na selile selile selile mubisubizo byamazi Hariho bike raporo z'ubushakashatsi.Uru rupapuro rwibanze ku myitwarire ya rheologiya ya quaternary ammonium yahinduwe ya selile yamashanyarazi, kugirango itange ibisobanuro bifatika.

1. Igice cyubushakashatsi

1.1 Ibikoresho bibisi

Cateric selulose ether (KG-30M, JR-30M, LR-30M);Ibicuruzwa bya Kanada Dow Chemical Company, bitangwa na Procter & Gamble Company Kobe R&D Centre mu Buyapani, byapimwe na Vario EL isesengura ryibanze (Isosiyete y’Abadage Elemental Company), icyitegererezo Ibirimo azote ni 2.7%, 1.8%, 1.0% (ubwinshi bwamafaranga ni 1.9 Meq / g, 1.25 Meq / g, 0,7 Meq / g uko bikurikirana), kandi irageragezwa n’umudage ALV-5000E laser laser Scattering igikoresho (LLS) yapimye uburemere bwacyo uburemere bwa molekile ni 1.64×106g / mol.

1.2 Gutegura igisubizo

Icyitegererezo cyahanaguwe no kuyungurura, dialyse no gukonjesha.Gupima urukurikirane rw'ibitegererezo bitatu byuzuye, hanyuma wongere igisubizo gisanzwe hamwe na pH 4.00, 6.86, 9.18 kugirango utegure kwibanda.Kugirango hamenyekane neza ko ibyitegererezo byasheshwe burundu, ibisubizo byicyitegererezo byose byashyizwe kumurongo wa magneti mugihe cyamasaha 48 mbere yo kwipimisha.

1.3 Ibipimo byo gukwirakwiza urumuri

Koresha LLS kugirango upime uburemere-buringaniye bwa molekuline yuburemere bwicyitegererezo mugisubizo cyamazi yo mumazi ,, radiyo hydrodynamic numuzi bisobanura kwaduka kwaduka kwizunguruka mugihe coefficient ya kabiri ya Villi hamwe nimpande zitandukanye,), hanyuma ushishoze ko ether ya cationic selile iri muri igisubizo cyamazi ukurikije igipimo cyacyo.

1.4 Ibipimo bya Viscosity hamwe niperereza ryamagambo

Igisubizo cyibanze kuri CCE cyizwe na Brookfield RVDV-III + rheometero, hanyuma hasuzumwa ingaruka ziterwa nubushuhe, ubwinshi bwamafaranga hamwe nagaciro ka pH kumiterere ya rheologiya nka viscosity sample.Mugihe cyo hejuru cyane, birakenewe gukora iperereza kuri thixotropy.

2. Ibisubizo n'ibiganiro

2.1 Ubushakashatsi ku Gukwirakwiza Umucyo

Bitewe nimiterere yihariye ya molekile, biragoye kubaho muburyo bwa molekile imwe ndetse no mumashanyarazi meza, ariko muburyo bwa micelles zimwe zihamye, cluster cyangwa amashyirahamwe.

Iyo igisubizo cyamazi yo mumazi (~ o.1%) ya CCE yagaragaye hamwe na microscope ya polarize, munsi yumurima wumukara wa orthogonal yumurima, "inyenyeri" ibibara byaka nibibari byiza byagaragaye.Irangwa kandi no gukwirakwiza urumuri, imbaraga za hydrodynamic ya radiyo kuri pH zitandukanye, imizi isobanura kwadarato ya radiyo yo kuzunguruka hamwe na coefficient ya kabiri ya Villi yabonetse ku gishushanyo cya Berry iri kuri Tab.1. Igishushanyo cyo gukwirakwiza imikorere ya hydrodynamic ya radiyo yabonetse ku gipimo cya 10-5 ahanini ni impinga imwe, ariko ikwirakwizwa ni ryagutse cyane (Ishusho 1), byerekana ko hari amashyirahamwe yo mu rwego rwa molekile hamwe n’ibintu byinshi muri sisitemu. ;Hano hari impinduka, kandi indangagaciro za Rg / Rb ziri hafi 0.775, byerekana ko imiterere ya CCE mugisubizo yegereye serefegitura, ariko ntabwo isanzwe ihagije.Ingaruka ya pH kuri Rb na Rg ntabwo igaragara.Kurwanya mubisubizo bya buffer bikorana na CCE kugirango ikingire amafaranga kumurongo wuruhande rwayo kandi igabanuke, ariko itandukaniro riratandukanye nubwoko bwa contion.Ibipimo byo gukwirakwiza urumuri rwa polymers byishyurwa birashobora guhura ningufu ndende zikorana no kwivanga hanze, kuberako hariho amakosa nimbogamizi mubiranga LLS.Iyo igice kinini kirenze 0,02%, habaho impinga ebyiri zidashobora gutandukana cyangwa impinga nyinshi mubishushanyo mbonera bya Rh.Mugihe kwibandaho kwiyongera, Rh nayo iriyongera, byerekana ko macromolecules nyinshi ifitanye isano cyangwa yegeranye.Iyo Cao n'abandi.yakoresheje urumuri rusakara kugirango yige copolymer ya carboxymethyl selulose na macromers ikora hejuru, hariho kandi impinga ebyiri zidashobora gutandukana, imwe yari hagati ya 30nm na 100nm, igereranya imiterere ya micelles kurwego rwa molekile, naho ubundi Impinga Rh irasa nini, ifatwa nkigiteranyo, bisa nibisubizo byagenwe muriyi mpapuro.

2.2 Ubushakashatsi ku myitwarire ya rheologiya

2.2.1 Ingaruka zo kwibanda:Gupima ubwiza bugaragara bwibisubizo bya KG-30M hamwe nibitekerezo bitandukanye ku bipimo bitandukanye byogosha, kandi ukurikije uburyo bwa logarithmic yo kugereranya amategeko agenga ingufu zasabwe na Ostwald-Dewaele, mugihe igice kinini kitarenze 0.7%, hamwe nurukurikirane rw'imirongo igororotse. hamwe na coefficient yumurongo urenze 0.99 byabonetse.Kandi uko kwibanda kwiyongera, agaciro kerekana ibintu bya Newton n kagabanuka (byose bitarenze 1), byerekana amazi ya pseudoplastique.Iyobowe nimbaraga zogosha, iminyururu ya macromolecular itangira guhindagurika no kwerekera, bityo ububobere bugabanuka.Iyo igice kinini kirenze 0,7%, coefficente yumurongo uhuza umurongo ugororotse wabonetse iragabanuka (hafi 0,98), n n itangira guhindagurika cyangwa no kuzamuka hamwe no kwiyongera kwinshi;iyo igice kinini kigeze kuri 3% (Igishusho 2), imbonerahamwe Ubukonje bugaragara bwambere bwiyongera hanyuma bukagabanuka niyongera ryikigero cyogosha.Uru ruhererekane rwibintu bitandukanye na raporo zindi anionic na cationic polymer ibisubizo.N agaciro kazamutse, ni ukuvuga, umutungo utari Newtonian ucika intege;Amazi ya Newtonian ni amazi meza, kandi kunyerera hagati ya intermolecular bibaho bitewe nigikorwa cyo guhagarika umutima, kandi ntishobora kugarurwa;Amazi atari Newtonian arimo igice cya elastique gishobora kugarurwa nigice cyimbere kidasubirwaho.Mubikorwa byo guhagarika umutima, kunyerera bidasubirwaho hagati ya molekile bibaho, kandi mugihe kimwe, kubera ko macromolecules irambuye kandi yerekanwe hamwe nogosha, hashobora kubaho igice cyoroshye cya elastique.Iyo imbaraga zo hanze zavanyweho, macromolecules ikunda gusubira kumurongo wambere uhetamye, bityo agaciro ka n kazamuka.Kwibanda bikomeje kwiyongera kugirango habeho imiterere y'urusobe.Iyo impagarara zogosha ari nto, ntizisenywa, kandi hazabaho gusa guhinduka kwa elastique.Muri iki gihe, elastique izarushaho kwiyongera, viscosity izacika intege, kandi agaciro ka n kazagabanuka;mugihe impagarara zogosha zigenda ziyongera mugihe cyo gupima, bityo n Agaciro gahindagurika.Iyo igice kinini kigeze kuri 3%, ubwiza bugaragara bwambere bwiyongera hanyuma bukagabanuka, kubera ko ubwoya buto butera kugongana kwa macromolecules kugirango habeho igiteranyo kinini, bityo ububobere bukazamuka, kandi guhangayikishwa no gukata bikomeza kumena igiteranyo., ububobere buzongera kugabanuka.

Mu iperereza rya thixotropy, shiraho umuvuduko (r / min) kugirango ugere kuri y yifuzwa, ongera umuvuduko mugihe gisanzwe kugeza ugeze ku giciro cyagenwe, hanyuma uhite umanuka uva kumuvuduko mwinshi usubira mubiciro byambere kugirango ubone ibikwiranye Guhangayikishwa no gukata, isano bifitanye nigipimo cyogosha cyerekanwe ku gishushanyo cya 3. Iyo igice kinini kiri munsi ya 2,5%, umurongo wo hejuru hamwe nu murongo wo kumanuka wuzuzanya rwose, ariko iyo igice kinini ari 3%, imirongo ibiri oya birebire cyane, kandi umurongo wo hasi urasubira inyuma, byerekana thixotropy.

Igihe cyo guterwa no guhagarika umutima bizwi nkurwanya rheologiya.Kurwanya indwara ya Rheologiya ni imyitwarire iranga viscoelastic fluid na fluid hamwe na thixotropique.Byagaragaye ko binini y biri mubice bimwe, r yihuta igera kuburinganire, kandi igihe cyo kuba gito ni gito;ku gice gito cyo hasi (<2%), CCE ntabwo yerekana kurwanya imvugo.Iyo igice kinini cyiyongereye kugera kuri 2,5%, byerekana imbaraga zikomeye zishingiye ku gishushanyo (Ishusho 4), kandi bifata iminota 10 kugirango ugere kuburinganire, mugihe kuri 3.0%, igihe cyo kuringaniza gifata iminota 50.Thixotropy nziza ya sisitemu ifasha mubikorwa bifatika.

2.2.2 Ingaruka yubucucike bwamafaranga:imiterere ya logarithmic ya formulaire ya Spencer-Dillon yatoranijwe, aho zeru-zeru zijimye, b ihora kumurongo umwe hamwe nubushyuhe butandukanye, kandi ikiyongera hamwe no kwiyongera kwubushuhe kubushyuhe bumwe.Ukurikije amategeko agenga ingufu zemejwe na Onogi mu 1966, M ni misile igereranije ya polymer, A na B ihoraho, naho c nigice kinini (%).Igishushanyo．5 Imirongo itatu ifite ingingo zigaragara zigera kuri 0,6%, ni ukuvuga ko hari agace gakomeye.Kurenga 0,6%, ubukonje bwa zeru-shear bwiyongera byihuse hamwe no kwiyongera kwingutu C. Imirongo yintangarugero eshatu hamwe nubucucike butandukanye buri hafi cyane.Ibinyuranyo, iyo igice kinini kiri hagati ya 0.2% na 0.8%, ubukonje bwa zeru bwagabanutse bwa sample ya LR hamwe nubucucike buke buke ni bunini, kuko ishyirahamwe rya hydrogène risaba guhuza runaka.Kubwibyo, ubwinshi bwamafaranga bufitanye isano cyane no kumenya niba macromolecules ishobora gutondekwa muburyo bukurikiranye kandi bworoshye;binyuze mu igeragezwa rya DSC, usanga LR ifite impinga ya kristalisiti idakomeye, byerekana ubwinshi bwumuriro, kandi ubukana bwa zeru-shear buri hejuru murwego rumwe.Iyo agace ka misa kari munsi ya 0.2%, LR niyo ntoya, kuko mugisubizo cyoroshye, macromolecules ifite ubukana buke buke irashobora gukora icyerekezo cya coil, bityo ubukonje bwa zeru-shear bukaba buke.Ibi bifite akamaro keza ko kuyobora muburyo bwo kubyimba.

2.2.3 pH ingaruka: Igishushanyo cya 6 nigisubizo cyapimwe kuri pH zitandukanye murwego rwa 0.05% kugeza 2,5%.Hano hari aho ihindagurika igera kuri 0.45%, ariko imirongo itatu yenda guhuzagurika, byerekana ko pH nta ngaruka zigaragara zifite kuri zeru-shear, ibyo bikaba bitandukanye cyane no kwiyumvamo selile ya anionic selile na pH.

3. Umwanzuro

KG-30M yumuti wamazi wamazi wizwe na LLS, kandi gukwirakwiza hydrodynamic radius yabonetse ni impinga imwe.Uhereye ku mfuruka zishingiye ku kigereranyo cya Rg / Rb, birashobora kwemezwa ko imiterere yacyo yegeranye na serefegitire, ariko ntibisanzwe bihagije.Kubisubizo bya CCE hamwe nubucucike butatu, ubwiza bwiyongera hamwe no kwiyongera kwinshi, ariko umubare wa Newton uhiga n ubanza kugabanuka, hanyuma uhindagurika ndetse urazamuka;pH igira ingaruka nke mubucucike, kandi ubucucike buringaniye burashobora kubona ububobere buke.