Tšusumetso ea DS ho carboxymethyl cellulose Boleng

Degree of Substitution (DS) ke paramente ea bohlokoa e susumetsang haholo boleng le ts'ebetso ea Carboxymethyl Cellulose (CMC). DS e bolela palo e tloaelehileng ea lihlopha tsa carboxymethyl tse nkeloang sebaka ho karolo e 'ngoe le e 'ngoe ea anhydroglucose ea mokokotlo oa selulose. Boleng ba DS bo ama likarolo tse fapaneng tsa CMC, ho kenyeletsoa ho qhibiliha ha eona, viscosity, bokhoni ba ho boloka metsi, le boitšoaro ba rheological. Mona ke kamoo DS e susumetsang boleng ba CMC kateng:

1. Sollubility:

• Low DS: CMC e nang le DS e tlase e na le tšekamelo ea ho se qhibilihe ka metsing ka lebaka la lihlopha tse fokolang tsa carboxymethyl tse fumanehang bakeng sa ionization. Sena se ka etsa hore ho be le linako tse liehang tsa ho qhibiliha le linako tse telele tsa ho ntša metsi.
• High DS: CMC e nang le DS e phahameng e qhibiliha haholoanyane metsing, kaha palo e ntseng e eketseha ea lihlopha tsa carboxymethyl e ntlafatsa ionization le ho qhalana ha liketane tsa polymer. Sena se lebisa ho ho qhibiliha ka potlako le ho ntlafatsa thepa ea hydration.

2. Viscosity:

• Low DS: CMC e nang le DS e tlase hangata e bonts'a viscosity e tlase maemong a itseng ha e bapisoa le limaraka tse holimo tsa DS. Lihlopha tse fokolang tsa carboxymethyl li baka likamano tse fokolang tsa ionic le mekhatlo e fokolang ea polymer chain, e lebisang ho fokotseha ha viscosity.
• DS e Phahameng: Limaraka tse phahameng tsa DS CMC li atisa ho ba le viscosity e phahameng ka lebaka la ho eketseha ha ionization le likamano tse matla tsa polymer chain. Palo e kholo ea lihlopha tsa carboxymethyl e khothaletsa tlamahano e pharalletseng ea hydrogen le ho ts'oara, e leng se hlahisang tharollo e phahameng ea viscosity.

3. Paballo ea Metsi:

• DS e tlase: CMC e nang le DS e tlase e kanna ea fokotsa matla a ho boloka metsi ha ho bapisoa le limaraka tse holimo tsa DS. Lihlopha tse fokolang tsa carboxymethyl li fokotsa palo ea libaka tse teng bakeng sa ho tlama le ho monya metsi, e leng se bakang ho boloka metsi ho tlaase.
• DS e Phahameng: Limaraka tse phahameng tsa DS CMC hangata li bonts'a thepa e phahameng ea ho boloka metsi ka lebaka la palo e ntseng e eketseha ea lihlopha tsa carboxymethyl tse fumanehang bakeng sa hydration. Sena se ntlafatsa bokhoni ba polima ea ho monya le ho boloka metsi, ho ntlafatsa ts'ebetso ea eona e le sekontiri se teteaneng, se tlamang kapa se laolang mongobo.

4. Boitšoaro ba Rheological:

• DS e tlase: CMC e nang le DS e tlase e atisa ho ba le boitšoaro bo bongata ba ho phalla ha Newton, ka viscosity e ikemetseng ntle le sekhahla sa ho kuta. Sena se etsa hore e tšoanelehe bakeng sa lits'ebetso tse hlokang viscosity e tsitsitseng holim'a mefuta e mengata e fapaneng ea litekanyetso tsa ho kuta, joalo ka ts'ebetsong ea lijo.
• DS e phahameng: Limaraka tse phahameng tsa DS CMC li ka bonts'a boits'oaro ba pseudoplastic kapa ho beta, moo viscosity e fokotsehang ka sekhahla sa ho kuta. Thepa ena e molemo bakeng sa lits'ebetso tse hlokang bonolo ho pompa, ho fafatsa, kapa ho hasana, joalo ka lipente kapa lihlahisoa tsa tlhokomelo ea motho.

5. Botsitso le Kamano:

• DS e tlase: CMC e nang le DS e tlase e ka bonts'a botsitso bo betere le ho lumellana le metsoako e meng ea metsoako ka lebaka la ionization ea eona e tlase le likamano tse fokolang. Sena se ka thibela karohano ea mekhahlelo, pula, kapa litaba tse ling tsa botsitso lits'ebetsong tse rarahaneng.
• DS e Phahameng: Limaraka tse phahameng tsa DS CMC li ka 'na tsa e-ba bonolo haholoanyane ho gelation kapa karohano ea mekhahlelo ka litharollo tse tsepamisitsoeng kapa mocheso o phahameng ka lebaka la likamano tse matla tsa polymer. Ho hlophisoa ka hloko le ho sebetsa hoa hlokahala ho netefatsa botsitso le ho lumellana maemong a joalo.

Degree of Substitution (DS) e susumetsa haholo boleng, ts'ebetso, le ho tšoaneleha ha Carboxymethyl Cellulose (CMC) bakeng sa lits'ebetso tse fapaneng. Ho utloisisa kamano lipakeng tsa thepa ea DS le CMC ho bohlokoa bakeng sa ho khetha kereiti e nepahetseng ho fihlela litlhoko tse ikhethileng tsa ho hlophisoa le litekanyetso tsa ts'ebetso.