Imiterere yimiti nuwakoze selile ya Ethers

Ether ya selulose nicyiciro cyibintu bikoreshwa cyane mubikorwa bitandukanye, harimo ubwubatsi, ibiryo, imiti, no kwita kubantu. Izi mvange zikomoka kuri selile, polymer karemano iboneka mu bimera, kandi ikorwa binyuze muburyo bwo guhindura imiti. Muri iki kiganiro, tuzaganira ku miterere yimiti ya selile ethers na bamwe mubakora inganda zikomeye.

Imiterere yimiti ya selile ya Ethers:

Ether ya selile ikomoka kuri selile, polymer yumurongo ugizwe nibice bya glucose bihujwe na beta-1,4 glycosidic. Igice gisubiramo selile cyerekanwe hepfo:

Guhindura imiti ya selile kugirango itange selile ya selile irimo gusimbuza amatsinda ya hydroxyl kumurongo wa selile hamwe nandi matsinda akora. Amatsinda akoreshwa cyane kuriyi ntego ni methyl, Ethyl, hydroxyethyl, hydroxypropyl, na carboxymethyl.

Methyl Cellulose (MC):

Methyl selulose (MC) ni selile ya selile ikorwa no gusimbuza amatsinda ya hydroxyl kumurongo wa selile hamwe nitsinda rya methyl. Urwego rwo gusimbuza (DS) rwa MC rushobora gutandukana kuva 0.3 kugeza 2.5, bitewe nibisabwa. Uburemere bwa molekuline ya MC mubusanzwe buri hagati ya 10,000 na 1.000.000 Da.

MC ni umweru kugeza kuri cyera, nta mpumuro nziza, kandi ifu itagira uburyohe ikemuka mumazi hamwe na solge nyinshi. Bikunze gukoreshwa nkibibyimbye, bihuza, na emulisiferi mu nganda zitandukanye, harimo ibiryo, imiti, no kwita ku muntu ku giti cye. Mu nganda zubaka, MC ikoreshwa nkiyongera mubicuruzwa bishingiye kuri sima kugirango bitezimbere imikorere, gufata amazi, nimbaraga zifatika.

Ethyl Cellulose (EC):

Ethyl selulose (EC) ni selile ya selile ikorwa no gusimbuza amatsinda ya hydroxyl kumurongo wa selile hamwe nitsinda rya Ethyl. Urwego rwo gusimbuza (DS) rwa EC rushobora gutandukana kuva 1.5 kugeza 3.0, bitewe nibisabwa. Uburemere bwa molekuline ya EC mubusanzwe buri hagati ya 50.000 na 1.000.000 Da.

EC ni umweru kugeza kuri-cyera, nta mpumuro nziza, kandi idafite uburyohe butabora mumazi ariko bigashonga mumashanyarazi menshi. Bikunze gukoreshwa nka binder, firime-yahoze, hamwe nogukomeza-gusohora mubikorwa bya farumasi. Byongeye kandi, EC irashobora gukoreshwa nkibikoresho byo gutwikira ibiryo nibicuruzwa bya farumasi kugirango bitezimbere kandi bigaragare.

Hydroxyethyl Cellulose (HEC):

Hydroxyethyl selulose (HEC) ni selile ya selile ikorwa no gusimbuza amatsinda ya hydroxyl kumurongo wa selile hamwe nitsinda rya hydroxyethyl. Urwego rwo gusimbuza (DS) rwa HEC rushobora gutandukana kuva 1.5 kugeza 2.5, bitewe nibisabwa. Uburemere bwa molekuline ya HEC mubusanzwe buri hagati ya 50.000 na 1.000.000 Da.

HEC ni umweru kugeza kuri-cyera, nta mpumuro nziza, kandi itagira uburyohe butangirika mumazi hamwe na solge nyinshi. Bikunze gukoreshwa nkibibyimbye, emulisiferi, na stabilisateur mu nganda zitandukanye, harimo ibiryo, imiti, no kwita kubantu. Mu nganda zubaka, HEC ikoreshwa nk'inyongera mu bicuruzwa bishingiye kuri sima mu rwego rwo kunoza imikorere, gufata amazi, n'imbaraga zifatika.

Hydroxypropyl methyl selulose (HPMC) ni selile ya selile ikorwa no gusimbuza amatsinda ya hydroxyl kumurongo wa selile hamwe na hydroxypropyl na methyl. Urwego rwo gusimbuza (DS) rwa HPMC rushobora gutandukana kuva 0.1 kugeza 0.5 mugusimbuza hydroxypropyl na 1,2 kugeza kuri 2.5 mugusimbuza methyl, bitewe nibisabwa. Uburemere bwa molekuline ya HPMC mubusanzwe buri hagati ya 10,000 na 1.000.000 Da.

HPMC ni umweru utari umweru, udafite impumuro nziza, kandi udafite uburyohe butangirika mumazi hamwe na solge nyinshi. Bikunze gukoreshwa nkibibyimbye, bihuza, na emulisiferi mu nganda zitandukanye, zirimo ubwubatsi, ibiryo, imiti, no kwita ku muntu ku giti cye. Mu nganda zubaka, HPMC ikoreshwa nk'inyongeramusaruro mu bicuruzwa bishingiye kuri sima mu rwego rwo kunoza imikorere, gufata amazi, n'imbaraga zifatika.

Abakora Cellulose Ethers mumahanga:

Hariho abakora ibintu byinshi byingenzi bakora selile ya selile, harimo Dow Chemical Company, Ashland Inc., Shin-Etsu Chemical Co., Ltd., AkzoNobel NV, na Daicel Corporation.

Dow Chemical Company nimwe mubakora inganda zikora selile, harimo HPMC, MC, na EC. Isosiyete itanga amanota menshi hamwe nibisobanuro kuri ibyo bicuruzwa, bitewe nibisabwa. Ethers ya selulose ya Dow ikoreshwa mubikorwa bitandukanye, harimo ubwubatsi, ibiryo, imiti, no kwita kubantu.

Ashland Inc. nundi mukora uruganda rukora selile, harimo HEC, HPMC, na EC. Isosiyete itanga amanota menshi hamwe nibisobanuro kuri ibyo bicuruzwa, bitewe na porogaramu. Ether ya selile ya Ashland ikoreshwa mu nganda zitandukanye, zirimo ubwubatsi, ibiryo, imiti, no kwita ku muntu ku giti cye.

Shin-Etsu Chemical Co., Ltd. ni uruganda rukora imiti rwo mu Buyapani rukora ethers ya selile, harimo HEC, HPMC, na EC. Isosiyete itanga amanota menshi hamwe nibisobanuro kuri ibyo bicuruzwa, bitewe nibisabwa. Imashini ya selile ya Shin-Etsu ikoreshwa mu nganda zitandukanye, zirimo ubwubatsi, ibiryo, imiti, no kwita ku muntu ku giti cye.

AkzoNobel NV ni isosiyete mpuzamahanga yo mu Buholandi ikora ethers ya selile, harimo HEC, HPMC, na MC. Isosiyete itanga amanota menshi hamwe nibisobanuro kuri ibyo bicuruzwa, bitewe na porogaramu. Ethers ya selulose ya AkzoNobel ikoreshwa mu nganda zitandukanye, zirimo ubwubatsi, ibiryo, imiti, no kwita ku muntu ku giti cye.

Daicel Corporation ni uruganda rukora imiti rwabayapani rukora ethers ya selile, harimo HPMC na MC. Isosiyete itanga amanota menshi hamwe nibisobanuro kuri ibyo bicuruzwa, bitewe nibisabwa. Ether ya selile ya Daicel ikoreshwa mu nganda zitandukanye, zirimo ubwubatsi, ibiryo, imiti, no kwita ku muntu ku giti cye.

Umwanzuro:

Ether ya selile ni urwego rwibintu biva muri selile kandi bikoreshwa cyane mubikorwa bitandukanye. Imiterere yimiti ya selile ya selile irimo gusimbuza amatsinda ya hydroxyl kumurongo wa selile hamwe nandi matsinda akora, nka methyl, Ethyl, hydroxyethyl, hydroxypropyl, na carboxymethyl. Hariho abakora ibintu byinshi byingenzi bakora selile ya selile, harimo Dow Chemical Company, Ashland Inc., Shin-Etsu Chemical Co., Ltd., AkzoNobel NV, na Daicel Corporation. Izi sosiyete zitanga ibyiciro byinshi byamanota nibisobanuro bya selile ya selile, bitewe nibisabwa.