4 Awọn Imọ-ẹrọ iṣelọpọ Ipilẹ ati Awọn agbekalẹ ti HPMC, Maṣe padanu!

Hydroxypropyl methylcellulose (HPMC) jẹ polima to wapọ ti o jẹ lilo pupọ ni ọpọlọpọ awọn ile-iṣẹ, pẹlu ikole, elegbogi, ati awọn ile-iṣẹ ounjẹ.A ṣe agbejade HPMC ni lilo ọpọlọpọ awọn imọ-ẹrọ iṣelọpọ ati awọn agbekalẹ, da lori ohun elo ti a pinnu.Ninu nkan yii, a yoo ṣawari awọn imọ-ẹrọ iṣelọpọ ipilẹ mẹrin ati awọn agbekalẹ ti HPMC ti o ko yẹ ki o padanu.

1. Imọ-ẹrọ Etherification Imọ-ẹrọ etherification jẹ imọ-ẹrọ iṣelọpọ ti a lo julọ fun HPMC.Ninu ilana yii, a ṣe itọju cellulose pẹlu alkali, gẹgẹbi iṣuu soda hydroxide, lati dagba cellulose alkali.Awọn cellulose alkali ti wa ni ki o fesi pẹlu propylene oxide ati methyl kiloraidi lati dagba HPMC.Iwọn iyipada (DS) ti HPMC ni a le ṣakoso nipasẹ ṣiṣatunṣe ipin ti oxide propylene si methyl kiloraidi lakoko iṣesi.

Ilana fun HPMC ti a ṣejade ni lilo imọ-ẹrọ etherification jẹ:

Cellulose + Alkali → Alkali Cellulose Alkali Cellulose + Propylene Oxide + Methyl Chloride → HPMC

2. Imọ-ẹrọ Gbigbe Sokiri Imọ-ẹrọ gbigbẹ fun sokiri jẹ imọ-ẹrọ iṣelọpọ ilọsiwaju diẹ sii fun HPMC.Ninu ilana yii, cellulose ti wa ni tituka ni ojutu alkali ati lẹhinna fesi pẹlu propylene oxide ati methyl kiloraidi.Abajade HPMC ojutu ti wa ni ki o si fun sokiri si dahùn o lati gbe awọn HPMC lulú.

Ilana fun HPMC ti a ṣejade ni lilo imọ-ẹrọ gbigbẹ sokiri jẹ:

Cellulose + Alkali → Alkali Cellulose Alkali Cellulose + Propylene Oxide + Methyl Chloride → HPMC Solusan HPMC Solusan + Gbigbe Sokiri → HPMC Powder

3. Imọ-ẹrọ Idaduro Polymerization Idaduro Imọ-ẹrọ polymerization idadoro jẹ imọ-ẹrọ iṣelọpọ miiran fun HPMC.Ninu ilana yii, cellulose ti wa ni idaduro ninu epo ati lẹhinna fesi pẹlu propylene oxide ati methyl kiloraidi niwaju olupilẹṣẹ polymerization lati ṣe agbekalẹ HPMC.

Ilana fun HPMC ti a ṣejade ni lilo imọ-ẹrọ polymerization idadoro jẹ:

Cellulose + Solvent + Polymerization Initiator → Idaduro Cellulose Cellulose Idaduro + Propylene Oxide + Methyl Chloride → HPMC

4. Imọ-ẹrọ Polymerization Solusan Imọ-ẹrọ polymerization ojutu jẹ imọ-ẹrọ iṣelọpọ tuntun ti o jo fun HPMC.Ninu ilana yii, cellulose ti wa ni tituka ni epo ati lẹhinna fesi pẹlu propylene oxide ati methyl kiloraidi niwaju olupilẹṣẹ polymerization lati ṣe agbekalẹ HPMC.

Ilana fun HPMC ti a ṣejade ni lilo imọ-ẹrọ polymerization ojutu jẹ:

Cellulose + Solvent + Polymerization Initiator → Cellulose Solution Cellulose Solution + Propylene Oxide + Methyl Chloride → HPMC

Ni ipari, HPMC jẹ polima to wapọ ti o ṣejade ni lilo ọpọlọpọ awọn imọ-ẹrọ iṣelọpọ ati awọn agbekalẹ, da lori ohun elo ti a pinnu.Awọn imọ-ẹrọ iṣelọpọ ipilẹ mẹrin ati awọn agbekalẹ ti HPMC pẹlu imọ-ẹrọ etherification, imọ-ẹrọ gbigbẹ sokiri, imọ-ẹrọ polymerization idadoro, ati imọ-ẹrọ polymerization ojutu.Imọye imọ-ẹrọ iṣelọpọ ati agbekalẹ ti HPMC le ṣe iranlọwọ fun awọn aṣelọpọ lati yan ọja HPMC ti o tọ fun awọn ohun elo wọn pato.