Iyo inonyanya kukosha pfuma ye cellulose ether mhinduro ndeyezvivakwa zvaro zvivakwa. Izvo zvakakosha zvezvivakwa zvezvakawanda zvemasero zvinoita kuti vashandiswe zvakanyanya muminda dzakasiyana siyana, uye kudzidza kwezvivakwa zvinobatsira mukuvandudzwa kweminda itsva yekushandisa kana kuvandudzwa kwemamwe minda yekushandisa. Li Jing kubva kuShanghai Jiao Tong University akaitisa kurongeka kwekufunda pazvinhu zvakatsanangurwa zvecarboxymethylcellose (cmc), kusanganisira pesvedzero yeCMC's molecular mamiriro emahara (molecular uremu uye degree rekutsiva), kusungira pH, uye ionic simba. Mhedzisiro yekutsvaga inoratidza kuti zero-shear viscosity yemhinduro inowedzera nekuwedzera kweiyo molecular uremu uye huwandu hwekutsiva. Kuwedzera kweiyo molecular uremu zvinoreva kukura kweiyo molecular cheni, uye iyo iri nyore kupinda pakati pemamorekuru inowedzera iyo visikopa yemhinduro. Dhigirii rakakura rekutsiva kunoita kuti mamorekuru atambanudzire zvakanyanya mumhinduro. Iyo nyika iripo, iyo hydrodynamic vhoriyamu yakakura, uye visikoka inova yakakura. Iyo viscosity yeCMC yemukati mhinduro inowedzera nekuwedzera kwekusimbisa, iyo ine viscoelasticity. Iyo viscosity yemhinduro inoderedza neiyo ph kukosha, uye kana yakaderera pane imwe kukosha, iyo viscosity inowedzera zvishoma, uye pakupedzisira yakasununguka acid inoumbwa uye yakagadzirirwa. CMC ipolyanionic polymer, paunenge uchiwedzera zvinyoro-nyoro munyu neNa + Nhe Shiel Shield, visikoity ichaderera nenzira yakajeka. Kuwedzerwa kweCate Cation CAZI + kunoita kuti visikopa yemhinduro yekudzikira kutanga uye wozowedzera. Kana iko kusungwa kweCA2 + kwakakwirira kupfuura iyo Stoichometric Point, CMC mamorekuru inofambidzana neCA2 +, uye kururamisa kuripo mumhinduro. Liang Yaqin, North University of China, etc. Yakashandisa nzira yeVisaCometer yekuitisa zvinhu zvakanyanyisa uye zvakamanikidzwa Mhedzisiro yekutsvaga yakawana kuti: (1) Cationic hydroxyll Cellown ine maitiro ePolyelelelelte viscosity mumvura yakachena, uye viscosity yakaderera inowedzera nekuwedzera kwekuwedzera. Iyo Intrinsic viscosity yeCatoxyl Hydroxyl CellEtHeleth Celluloseeth yekutsiva yakakura kupfuura iyo yeCatoxhyl hydroxyl cellouter ine yakaderera degree yekutsiva. (2) Mhinduro yeConic Hydroxyll CellenchersxtHexheseTole Exhillose Hunhu uye ine shear Matindu Mune imwe yekuvharirwa kwemhinduro yemunyu, chec inooneka viscossity inoderera nekuwedzera kweiyo yakawedzerwa munyu. Pasi peiyo shear shea, iyo jekersal yeCEC muCACL2 Solution system yakakosha pane iyo chec muNacl Solution system.
Nekuwedzera kwekutsvagisa nekuwedzera kwekuwedzera kweminda yekushandisa, zvivakwa zvemamiriro akasanganiswa emishini anoumbwa nemari yakasiyana cellulose eterowo. Semuenzaniso, sodium carboxymeyl cellerose (Nacmc) uye hydroxaketl Cellermement (ine zvigadzirwa zvemafuta ekuramba Kunyangwe iyo yekutanga ine yakanaka viscosity, inokanganiswa nyore nyore nekudziya kwekudziya uye tembiricha; Kunyangwe iyo yekupedzisira ine tembiricha yakanaka uye yekushomeka kwemunyu, kugona kwayo kwakashata kune murombo uye dosage iri yakakura. Vaongorori vakasangana nemhinduro mbiri uye vakawana kuti visikoka mhinduro yakave yakakura, kudzikisira kwekushomeka uye kuramba kwemunyu kwakavandudzwa kusvika kune imwe nhanho, uye maitiro ekunyorera akawedzerwa. Verica towvij et al. vakadzidza maitiro ezvinyorwa zvemhinduro yeiyo yakasanganiswa system yakanyorwa yeHPMC uye Nacmc uye anionic siractorct Iyo rheological maitiro ehurongwa zvinoenderana neHPMC-NACMC, HPMC-SDS uye NAPMC- (HPMC- SDS) mhedzisiro yakaitika pakati.
Iyo rheological zvivakwa zve cellulose ether solutions inokanganiswawo nezvakaringana zvinhu, zvakadai sekuwedzera, zvekunze mechaniti simba uye tembiricha. Tomoaki hino et al. akadzidza mhedzisiro yekuwedzera kweiyo nicotine pane rateological zvivakwa zve hydroxypropropropropluslose. Pa25c uye kuderera kwakadzika kupfuura 3%, HPMC yakaratidza Newtonian Fluid maitiro. Apo nikotini yakawedzerwa, iyo visikoka yakawedzera, iyo yakaratidza kuti nikotini yakawedzera kupinda kweHpcmamorekuru. Nikotine pano inoratidzira iyo inokwazisa iyo inosimudza iyo gel point uye fog point yeHPMC. Simba rezvemakaniki seShear reSheya richavawo nezvokumanikidza pane zvivakwa zve cellulose ether mhinduro kumhinduro. Uchishandisa rheological turbidimeter uye diki kona yekuparadza chiridzwa, inowanikwa iyo mumhinduro yeSilute, ichiwedzera chiyero chesheya, nekuda kwekuvhiringidza kusanganisa, tembiricha yekudziya yekuwedzera ichawedzera.
Kutumira Nguva: Kubvumbi-28-2024