Ibisubizo by'ibizamini bya selile

Binyuze mu isesengura nincamake y'ibisubizo bya selile ya ether mu bice bitatu, imyanzuro nyamukuru niyi ikurikira:

5.1 Umwanzuro

1. Cellulose ether gukuramo ibikoresho bibisi

.

na bagasse gukuramo selile, kandi inzira yo gukuramo selile yari nziza. Mugihe cyateguwe neza,

Ugereranije ubuziranenge bwa lignocellulose, ingano y'ibyatsi selile na bagasse selulose byose byari hejuru ya 90%, kandi umusaruro wabo wose wari hejuru ya 40%.

.

Kuri cm 1510-1 (kunyeganyega kwa skeletale yimpeta ya benzene) no kuri cm 1730-1 (kurambura kwinyeganyeza kwa karuboni C = O)

Nta mpinga yari ihari, byerekana ko lignin na hemicellulose mu bicuruzwa byakuweho ahanini byavanyweho, kandi selile yabonetse yari ifite ubuziranenge bwinshi. n'umuhengeri

Birashobora kugaragara uhereye kumurongo wo hanze winjiza ko ugereranije nibintu bya lignine bigabanuka ubudahwema nyuma ya buri ntambwe yo kuvura, kandi UV yinjira muri selile yabonetse iragabanuka.

Ikirangantego cyabonetse cyari hafi ya ultraviolet absorption spécral ya potasiyumu permanganate yambaye ubusa, byerekana ko selile yabonetse yari yera. na X.

Isesengura rya X-ray ryerekanye ko ugereranije na kristu ya selile yabonetse yabonetse neza.

2. Gutegura ethers ya selile

.

Ubushakashatsi bwa orthogonal hamwe nubushakashatsi bwibintu bimwe byakozwe mugutegura CMC, HEC na HECMC bivuye mubiti bya pinusi alkali selulose.

Gutezimbere. Muburyo bwiza bwo gutegura neza, CMC hamwe na DS kugeza kuri 1.237, HEC hamwe na MS kugeza 1.657 byabonetse.

na HECMC hamwe na DS ya 0.869. .

Muri selile ether HEC, itsinda rya hydroxyethyl ryahujwe neza; muri selile ether HECMC, hydroxyethyl itsinda ryahujwe neza

Amatsinda ya Carboxymethyl na hydroxyethyl.

.

urwego rwo gusimbuza.

.

Imiterere ya kristu yose yahinduwe mubwoko bwa selile II, kandi kristu yagabanutse cyane.

3. Gukoresha selile ya ether paste

.

Pseudoplastique ya selile eshatu ya selile iruta iya SA, kandi ugereranije na SA, ifite agaciro ka PVI yo hasi, ikaba ikwiriye cyane gucapa neza.

Indabyo; gahunda yikigereranyo cyo gushiraho paste enye ni: SA> CMC> HECMC> HEC; ubushobozi bwo gufata amazi ya CMC paste yumwimerere,

72

Guhuza urea hamwe no kurwanya umunyu S bisa na SA, kandi guhunika ububiko bwa paste yumwimerere ya CMC biruta SA, ariko the

Guhuza kwa HEC paste mbisi ni bibi kurenza ibya SA;

Ubwuzuzanye nububiko bwa sodium bicarbonate birutwa na SA;

SA irasa, ariko ubushobozi bwo gufata amazi, guhuza na sodium bicarbonate hamwe nububiko bwa HEECMC paste mbisi biri munsi ya SA. .

kandi igipimo cya depaste cya CMC kiruta icya SA; igipimo cya depaste no gucapa wumva HEC isa na SA, ariko isura ya HEC iruta iya SA.

Ingano yamabara, ubworoherane nibara ryihuta kubisiba biri munsi ya SA; Icapiro rya HECMC umva, kwihuta kwamabara guswera bisa na SA;

Ikigereranyo cya paste kiri hejuru ya SA, ariko ikigaragara cyumusaruro wamabara hamwe nububiko bwa HECMC biri munsi ya SA.

5.2 Ibyifuzo

Uhereye kubikorwa bya 5.1 selulose ether paste irashobora kuboneka, selile ether paste irashobora gukoreshwa mubikorwa

Irangi ryandika, cyane cyane anionic selulose ethers. Bitewe no gutangiza hydrophilic group carboxymethyl, abanyamuryango batandatu

Imyitwarire yitsinda ryibanze rya hydroxyl kumpeta, hamwe nuburyo bubi nyuma ya ionisiyoneri icyarimwe, birashobora guteza imbere irangi rya fibre hamwe namabara asize. Ariko, muri rusange,

Ingaruka yo gukoresha selile ya ether icapura paste ntabwo ari nziza cyane, cyane cyane kubera urwego rwo gusimbuza cyangwa gusimbuza molari ya selulose ether.

Bitewe nurwego ruto rwo gusimburwa, gutegura ether ya selile ifite impamyabumenyi yo gusimbuza cyane cyangwa impamyabumenyi ihanitse ikenera ubushakashatsi.