Gawo la maselo a celluuse mu matope osakanikirana

Cellulose ether ndi polymer yopanga policle yopangidwa kuchokera ku cellulose yachilengedwe kudzera mu kusintha mankhwala. Cellulose ether ndi zochokera ku cellulose yachilengedwe. Kupanga kwa cellulose ether ndi kosiyana ndi opanga ma polima. Zida zake zoyambirira ndizopenchera, kuphatikiza kwachilengedwe kwa polymer. Chifukwa cha kuchuluka kwa kapangidwe ka cellulose, cellulose yomwe ilibe mphamvu yokhudzana ndi othandizira. Komabe, pambuyo pa mankhwalawa a wothandizira wazotupa, maunyolo a hydrogen pakati pa unyolo wazomwe unyolowo ndi maunyolowo adawonongedwa, ndipo kutulutsidwa kwa Hydroxyyl kumakhala kwa cellulose ya alkali. Pezani ether ether.

Mphamvu za cellulose eder zimatengera mtundu, chiwerengero ndi kufalitsa m'malo opezekapo. Kugawika kwa cellulose kumachitikanso pamtundu wa mipweya yambiri, digiri ya kukongoletsa, kusungunuka komanso ntchito zokhudzana ndi ntchito. Malinga ndi mtundu wa magalamure pa ma molecular cheni, imatha kugawidwa mu monoether ndi osakaniza. MC nthawi zambiri timagwiritsa ntchito ndi monoether, ndipo HPMC imasakaniza ether. Methyl cellulose ether mc ndiye chinthucho pambuyo pa gulu la hydroxyl pa gawo la glucose la cellulose yazachilengedwe yagawidwa ndi methoxy. Ndi chinthu chomwe chimapangidwa ndi gawo la gulu la hydroxyl pa unit ndi gulu lina la methoxy ndi gawo lina lokhala ndi gulu la hydroxypyl. Njira yoyesererayo ili [CE) (O) 3-MN) M [THE) T] Th3] Ah vhdroxyethyl exerose exula.

Potengera kusungunuka, imatha kugawidwa mu ionic komanso yosakhala ionic. Madzi osungunuka amadzi osakhala a celluse a ionic amakhala ndi mndandanda wa ma alkyl angapo a ma alkyl, ndi hydroxyalkyl et. Ionic CMC imagwiritsidwa ntchito makamaka popanga zotupa, kusindikiza mwadongosolo ndi kupanikizika ndi kufufuza kwamafuta. Opanda MC, HPMC, hemoc, etc. amagwiritsidwa ntchito makamaka popanga, mankhwala tsiku lililonse, mankhwala osungirako, osokoneza bongo, osokoneza bongo.

Kusunga kwamadzi kwa cellulose ether

Popanga ziphato zomangira, makamaka matope osakanikirana owuma, cellulose ether amagwira ntchito yosasinthika, makamaka popanga matope apadera (matope osinthika), ndi chinthu chofunikira komanso chofunikira komanso chofunikira.

Udindo wofunikira wa sungunuka wamadzi wosungunulira wamadzi mu matope makamaka ali ndi magawo atatu, imodzi ndi njira yabwino yopezera ndalama, inayo ndiye chidwi cha matope ndi simenti.

Madzi osunga ma cellulose ethel ether amatengera madzi ophatikizika, kapangidwe ka matope, makulidwe a matope, kufunidwa kwamadzi kwa matope. Kusunga kwamadzi kwa maselo a cellulose kumachokera ku sulubility ndi madzinjeme a cellulose e okha. Monga tonse tikudziwa, ngakhale kuti ma cellulose a cellulose amakhala ndi mitundu yambiri yamagulu ambiri, samasungunuka m'madzi, chifukwa mawonekedwe a cellulose ali ndi crystality wamkulu. Kutha kwa ma hydrobyl kwa magulu a hydroxyl sikukwanira kuphimba maukonde olimba ndi van Der Waals pakati pa mamolekyulu. Chifukwa chake, zimangotupa koma sizisungunuka m'madzi. Pamene gawo lazolowera limayambitsidwa mu mawonekedwe a ma molecular, osati gawo lokhalo lomwe limawononga unyolo wa hydrogen, komanso mgwirizano wa hydchain umawonongedwa chifukwa cha ukwati wapafupi ndi maunyolo oyandikana nawo. Kukula m'malo mwake, kwakukulu pakati pa mamolekyulu. Chachikulu mtunda. Zotsatira zazikulu zakuwononga magwiridwe antchito a hydrogen, ma cellulose amasungunuka osungunuka madzi pachipindachi atayamba kukula ndi yankho lolowa, ndikupanga yankho lalitali. Kutentha kukakwera, hydration kwa polima kumachepetsa, ndipo madzi pakati pa maunyolo amachotsedwa kunja. Mphamvu zokwanira zikakhala zokwanira, mamolekyulu amayamba kuphatikizika, ndikupanga mawonekedwe atatu a gel osakaniza ndikupindidwa. Zinthu zomwe zikukhudza madzi osungira matope zimaphatikizapo mamasukidwe a cellulose, kuchuluka komwe kumawonjezera, kukoma kwa tinthu ndi kutentha kwa ma tinthu.

Mawonekedwe apamwamba a ethel ether, yabwino kwambiri yosunga madzi, ndikukweza mawu a polymer. Kutengera ndi kuchuluka kwa mabowo (kuchuluka kwa polymerization) kwa polymer, kumatsimikiziridwanso ndi kutalika kwa ma tealecular kapangidwe kake ndi mawonekedwe amitundu, ndi kugawa kwamitundu yambiri kumakhudzanso ma vidiyo. [η] = kmí

[η]
m polyme molecular kulemera
α polymer mawonekedwe okhazikika
K isccess Sonyezani bwino

Makutu a polymer yankho limatengera kuchuluka kwa kuchuluka kwa polymer. Maonekedwe ndi ndende ya ethel ether eleul amakhudzana ndi pulogalamuyi m'minda yosiyanasiyana. Chifukwa chake, ethel cellulose ali ndi mawonekedwe osiyanasiyana akufa, ndipo kusintha kwa ma viscy kumadziwika kwambiri chifukwa cha kuwonongeka kwa alkali cellulose, ndiye kuti, kuthyolako kwa cellulose ma unyolo.
Kuchuluka kwa cellulose ether ether wowonjezera matope, kukonzanso magwiridwe antchito, komanso kuwoneka bwino, zabwino zomwe zimasungidwa bwino.

Chifukwa cha kukula kwa tinthu, tinthu tating'onoting'ono, zomwe zimasungidwa bwino. Onani Chithunzi 3. Pambuyo pa tinthu tating'onoting'ono ta cellulose ether en matchere ndi madzi, malowo amasungunula ndipo amapanga gel kuti muchepetse mamolekyulu amadzi kuti apitilize. Ochepera Kuchepera Kubala yunifolomu kumasungunuka, ndikupanga yankho lamitambo kapena ma Applomerates. Imakhudza kwambiri kusungira kwamadzi kwa maselo a cellulose, ndipo solobose ndi imodzi mwazinthu zomwe zimasankha cellulose ether ether ether ether.

Kukula ndi thixotropy ya cellulose ether

Ntchito yachiwiri ya cellulose ether - kukula, zimatengera: kuchuluka kwa polymerization kwa cellulose ether ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel, yankho ndi mikhalidwe ina. Katundu wolumikizidwayo ndi wapadera ku cellulose ya alkyl ndi zotumphukira zake. Kuchuluka kwa milita kumakhudzana ndi kuchuluka kwa malo olowa m'malo mwake, yankho ndi zowonjezera. Kwa hydroxyalyl osinthidwa, gel katundu wa gel omwe amakhudzananso ndi kuchuluka kwa hydroxyalkyl. Kwa ma viscrence otsika MC ndi HPMC, 10% -15% yankho la MC ndi HPMC imatha kukonzekera 2% -3% yothekera ndi 1% -2% yankho. Kulemera kwambiri kwa cellulose etheulose ether ali ndi luso lalikulu. Mu yankho lomweli, yankho lomweli ndi miyala yosiyanasiyana imakhala ndi ma viscosies osiyanasiyana. Digirii. Ma Isccience amangotha ​​kugwiritsa ntchito kuchuluka kwa ma celluur ether ether. Mavinyewa ake alibe kudalira pang'ono mtengo wometa ubweya, ndipo ma virus okwera amafika ku Viccect, ndipo kuchuluka kowonjezereka ndikochepa, ndipo mafayilo amatengera luso la kukula. Chifukwa chake, kukwaniritsa zosasinthika, kuchuluka kwa ethel ether ether (kukhazikika kwa yankho) ndi njira ya kusintha kwa iyenera kutsimikiziridwa. Kutentha kwa gel kulimanso kumachepetsa chozungulira ndikuwonjezeka kwa kuchuluka kwa njira yothetsera vutoli, ndipo ma gels firiji mukamaliza ndende inayake. Kukhazikika kwa HPMC ndikokwera kwambiri kutentha.

Kusasinthika kumathanso kusinthidwa ndikusankha kukula kwa tinthu ndikusankha cellulose eders eders osiyanasiyana osinthika. Kusintha komwe kumatchedwa ndikuyambitsa digiri ina ya migodi ya hydroxyaxyalkyll pamtundu wa mafupa a MC. Mwa kusintha malingaliro ogwirizana a magawo awiri a magawo awiriwo, ndiye kuti, ma DS ndi MS ndi mfundo zokhudzana ndi methoxy ndi ma hydroxyaxyalyl omwe nthawi zambiri amati. Zofunikira zogwirira ntchito zamagetsi ether ether zimatha kusinthidwa posintha malingaliro a wachibale wa magawo awiri.

Cellulose eder omwe amagwiritsidwa ntchito mu maluwa omanga ufa ayenera kusungunuka mwachangu m'madzi ozizira ndikupereka kusasinthika koyenera kwa dongosolo. Ngati atapatsidwa mtengo wina wamphongo, imakhalabe ndi chipika chodalirika komanso cocloidal.

Palinso ubale wabwino pakati pa kusasinthika kwa sitementi ya simenti ndi mlingo wa ether ether. Cellulose ether ingakulitse kwambiri matope a matope. Kukulira mlingo, zoonekeratu zotsatira zake.

Mawonekedwe apamwamba kwambiri cellulose a mu chixotropy ali ndi hixotropy, yomwe ilinso chinthu chachikulu cha cellulose ether ether. Mankhwala am'madzi amtundu wa MC nthawi zambiri amakhala ndi madzi amtundu wa pseudopropropic komanso masamba a Newtonian pamtunda wotsika. Pseudoplation imachulukana ndi kulemera kwa maselo kapena ndende ya ethel ether, mosasamala mtundu wa gawo la mpweya wolowa m'malo mwake. Chifukwa chake, cellulose edi ya kalasi ya ma visce yomwe ija, ziribe kanthu mc, hpmc, hemc, nthawi zonse imawonetsa zomwezo ngati kuchuluka kwa zomwe zimachitika nthawi zonse. Ma gels amapangidwa kuti kutentha kukuwukitsidwa, komanso kutulutsa kambiriko kwambiri. Kukhazikika kwambiri komanso kutsika kwa ma vinclose yotsika cellulose kumawonetsa thixotropy ngakhale pansi pa kutentha kwa gel. Katunduyu ndi phindu lalikulu pakusintha kwa malo opangira matope omanga. Ikufunika kufotokozedwa pano kuti kukwera kwa magazi kwa cellulose, koma mamasukidwe apamwamba kwambiri, omwe amakhala ndi vuto lofanana ndi matope ake komanso omanga. Maonekedwe ake, zoonekeratu kuti zimakula kwambiri patavala matope, koma siyofanana. Maonekedwe ena apakati komanso otsika, koma ma celluse osinthidwa ali ndi luso labwino pokonzanso mphamvu ya matope onyowa. Ndi kuwonjezeka kwa mafakisoni, kusungira kwamadzi kwa ethel ethel ether