Qaab-dhismeedka Kiimikada iyo Soo-saareha Ethers Cellulose

Ether-ka Cellulose waa nooc ka mid ah xeryahooda si weyn looga isticmaalo warshado kala duwan, oo ay ku jiraan dhismaha, cuntada, dawooyinka, iyo daryeelka shaqsiyeed. Xeryahooda waxaa laga soo qaatay cellulose, polymer-ka dabiiciga ah ee laga helo dhirta, waxaana lagu soo saaraa habka wax ka beddelka kiimikada. Maqaalkan, waxaan ka wada hadli doonaa qaabdhismeedka kiimikada ee ethers cellulose iyo qaar ka mid ah soosaarayaasha waaweyn ee xeryahooda.

Qaab dhismeedka Kiimikada Cellulose Ethers:

Ether-yada Cellulose waxa laga soo qaatay cellulose, polymer toosan oo ka kooban unugyo gulukoos oo ku xidhan beta-1,4 glycosidic bonds. Unugga soo noqnoqda ee cellulose ayaa lagu muujiyay hoos:

Wax ka beddelka kiimikaad ee cellulose si loo soo saaro ethers cellulose waxay ku lug leedahay beddelka kooxaha hydroxyl ee silsiladda cellulose ee kooxo kale oo shaqeynaya. Kooxaha ugu badan ee loo isticmaalo ujeedadan waa methyl, ethyl, hydroxyethyl, hydroxypropyl, iyo carboxymethyl.

Methyl Cellulose (MC):

Methyl cellulose (MC) waa ether cellulose ah oo ay soo saarto beddelka kooxaha hydroxyl ee silsiladda cellulose ee kooxaha methyl. Heerka beddelka (DS) ee MC way kala duwanaan kartaa 0.3 ilaa 2.5, iyadoo ku xidhan codsiga. Miisaanka molecular ee MC caadi ahaan waa inta u dhaxaysa 10,000 ilaa 1,000,000 Da.

MC waa caddaan ilaa cad-cad, aan ur lahayn, iyo budo aan dhadhamin oo ku milmay biyaha iyo inta badan dareerayaasha organic. Waxaa caadi ahaan loo isticmaalaa sidii dhumuc, xidhe, iyo emulsifier ee warshadaha kala duwan, oo ay ku jiraan cuntada, daawooyinka, iyo daryeelka shakhsiyeed. Warshadaha dhismaha, MC waxaa loo isticmaalaa wax lagu daro alaabta cement-ku-saleysan si loo wanaajiyo karti-u-shaqeynta, haynta biyaha, iyo xoogga xabagta.

Ethyl Cellulose (EC):

Ethyl cellulose (EC) waa eter cellulose ah oo ay soo saarto beddelka kooxaha hydroxyl ee silsiladda cellulose ee kooxaha ethyl. Heerka beddelka (DS) ee EC way kala duwanaan kartaa 1.5 ilaa 3.0, iyadoo ku xidhan codsiga. Miisaanka kelli ee EC caadi ahaan waa inta u dhaxaysa 50,000 ilaa 1,000,000 Da.

EC waa cad ilaa cad-cad, aan ur lahayn, iyo budo aan dhadhamin taas oo aan lagu milmi karin biyaha laakiin ku milma inta badan dareerayaasha organic. Waxa caadi ahaan loo isticmaalaa sidii xidhe, filim-hore, iyo wakiilka sii-daynta joogtada ah ee warshadaha dawooyinka. Intaa waxaa dheer, EC waxaa loo isticmaali karaa sida walxaha dahaarka ah ee cuntada iyo alaabta dawooyinka si loo hagaajiyo xasilloonida iyo muuqaalkooda.

Hydroxyethyl Cellulose (HEC):

Hydroxyethyl cellulose (HEC) waa ether cellulose ah oo ay soo saarto beddelka kooxaha hydroxyl ee silsiladda cellulose ee kooxaha hydroxyethyl. Heerka beddelka (DS) ee HEC way kala duwanaan kartaa 1.5 ilaa 2.5, iyadoo ku xidhan codsiga. Miisaanka kelli ee HEC caadi ahaan waa inta u dhaxaysa 50,000 ilaa 1,000,000 Da.

HEC waa cad ilaa cad-cad, aan ur lahayn, iyo budo aan dhadhamin oo ku milmay biyaha iyo inta badan dareerayaasha organic. Waxaa caadi ahaan loo isticmaalaa sidii dhumuc, emulsifier, iyo xasiliye warshado kala duwan, oo ay ku jiraan cuntada, daawooyinka, iyo daryeelka shakhsi ahaaneed. Warshadaha dhismaha, HEC waxaa loo isticmaalaa sida wax lagu daro alaabta cement-ku-saleysan si loo hagaajiyo karti-shaqsiyeedka, haynta biyaha, iyo xoogga xabagta.

Hydroxypropyl methyl cellulose (HPMC) waa eter cellulose ah oo ay soo saarto beddelka kooxaha hydroxyl ee silsiladda cellulose ee leh hydroxypropyl iyo methyl kooxaha. Heerka beddelka (DS) ee HPMC waxay ku kala duwanaan kartaa 0.1 ilaa 0.5 beddelka hydroxypropyl iyo 1.2 ilaa 2.5 beddelka methyl, iyadoo ku xidhan codsiga. Miisaanka kelli ee HPMC waxa uu caadi ahaan ku jiraa inta u dhaxaysa 10,000 ilaa 1,000,000 Da.

HPMC waa cad ilaa cad, aan ur lahayn, iyo budo aan dhadhamin oo ku milmay biyaha iyo inta badan dareerayaasha organic. Waxaa caadi ahaan loo isticmaalaa sidii dhumuc, xidhe, iyo emulsifier ee warshadaha kala duwan, oo ay ku jiraan dhismaha, cuntada, daawooyinka, iyo daryeelka shakhsiyeed. Warshadaha dhismaha, HPMC waxa loo isticmaalaa wax lagu daro alaabta cement-ku-salaysan si loo wanaajiyo karti-shaqsiyeedka, haysashada biyaha, iyo xoogga xabagta.

Soo-saareyaasha Cellulose Ethers dibadda:

Waxaa jira dhowr warshadood oo waaweyn oo ah ethers cellulose, oo ay ku jiraan Shirkadda Dow Chemical, Ashland Inc., Shin-Etsu Chemical Co., Ltd., AkzoNobel NV, iyo Daicel Corporation.

Shirkadda Dow Chemical waa mid ka mid ah soosaarayaasha hormuudka ka ah ether-ka cellulose, oo ay ku jiraan HPMC, MC, iyo EC. Shirkaddu waxay soo bandhigtaa darajooyin kala duwan iyo qeexitaanno kala duwan oo alaabtan ah, iyadoo ku xidhan codsiga. Ether-ka Selulose ee Dow waxaa loo isticmaalaa warshado kala duwan, oo ay ku jiraan dhismaha, cuntada, dawooyinka, iyo daryeelka gaarka ah.

Ashland Inc. waa soo saaraha kale ee weyn ee ethers cellulose, oo ay ku jiraan HEC, HPMC, iyo EC. Shirkaddu waxay soo bandhigtaa darajooyin kala duwan iyo tilmaamo kala duwan oo alaabtan ah, iyadoo ku xidhan codsiga. Ashland's cellulose ethers waxaa loo isticmaalaa warshado kala duwan, oo ay ku jiraan dhismaha, cuntada, daawooyinka, iyo daryeelka shakhsi ahaaneed.

Shin-Etsu Chemical Co., Ltd. waa shirkad kiimiko ah oo Jabbaan ah oo soo saarta ethers cellulose, oo ay ku jiraan HEC, HPMC, iyo EC. Shirkaddu waxay soo bandhigtaa darajooyin kala duwan iyo qeexitaanno kala duwan oo alaabtan ah, iyadoo ku xidhan codsiga. Shin-Etsu's cellulose ethers waxaa loo isticmaalaa warshado kala duwan, oo ay ku jiraan dhismaha, cuntada, daawooyinka, iyo daryeelka shakhsi ahaaneed.

AkzoNobel NV waa shirkad caalami ah oo Nederland ah oo soo saarta ethers cellulose, oo ay ku jiraan HEC, HPMC, iyo MC. Shirkaddu waxay soo bandhigtaa darajooyin kala duwan iyo tilmaamo kala duwan oo alaabtan ah, iyadoo ku xidhan codsiga. AkzoNobel's cellulose ethers waxaa loo isticmaalaa warshado kala duwan, oo ay ku jiraan dhismaha, cuntada, daawooyinka, iyo daryeelka shakhsi ahaaneed.

Daicel Corporation waa shirkad kiimiko ah oo Jabbaan ah oo soo saarta ethers cellulose, oo ay ku jiraan HPMC iyo MC. Shirkaddu waxay soo bandhigtaa darajooyin kala duwan iyo qeexitaanno kala duwan oo alaabtan ah, iyadoo ku xidhan codsiga. Eter-ka cellulose-ka Daicel waxaa loo isticmaalaa warshado kala duwan, oo ay ku jiraan dhismaha, cuntada, daawooyinka, iyo daryeelka shakhsi ahaaneed.

Gabagabo:

Ethers Cellulose waa nooc ka mid ah xeryahooda laga soo qaatay cellulose waxaana si weyn looga isticmaalaa warshado kala duwan. Qaab dhismeedka kiimikada ee ethers cellulose waxay ku lug leedahay beddelka kooxaha hydroxyl ee silsiladda cellulose leh kooxo kale oo shaqeynaya, sida methyl, ethyl, hydroxyethyl, hydroxypropyl, iyo karboxymethyl. Waxaa jira dhowr warshadood oo waaweyn oo ah ethers cellulose, oo ay ku jiraan Shirkadda Dow Chemical, Ashland Inc., Shin-Etsu Chemical Co., Ltd., AkzoNobel NV, iyo Daicel Corporation. Shirkadahani waxay bixiyaan darajooyin kala duwan iyo tilmaamo loogu talagalay ether-ka cellulose, iyadoo ku xiran codsiga.