Carboxymethylcellulose (CMC) chinhu chinoshandiswa zvakanyanya mumaindasitiri akasiyana-siyana akadai sezvekudya, mishonga, kugadzira mapepa, machira, uye migodhi. Chinobva mu cellulose yechisikigo, iyo yakawanda mumiti nezvimwe zvinhu zvipenyu. CMC ipolymer inonyungudika mumvura ine hunhu hwakasiyana hunosanganisira viscosity, hydration, adhesion uye adhesion.
Hunhu hweCMC
CMC chinhu chinobva mu cellulose chinogadziriswa nemakemikari nekupinza mapoka e carboxymethyl muchimiro chayo. Kugadziriswa uku kunowedzera kunyungudika uye hydrophilicity ye cellulose, nokudaro zvichivandudza mashandiro ayo. Hunhu hweCMC hunoenderana nehuwandu hwayo hwekutsiva (DS) uye huremu hwe molecular (MW). DS inotsanangurwa seavhareji yehuwandu hwemapoka e carboxymethyl payuniti yega yega yeglucose mumusana we cellulose, nepo MW ichiratidza hukuru nekupararira kwecheni dze polymer.
Chimwe chezvinhu zvakakosha zveCMC ndiko kunyungudika kwayo mumvura. CMC inonyungudika nyore nyore mumvura, zvichiita mhinduro ine simba ine simba repurasitiki. Maitiro aya e rheological anokonzerwa nekudyidzana pakati pemamorekuru eCMC, zvichikonzera kudzikira kwekunaka kwemuviri kana paine shear stress. Hunhu hwemamorekuru eCMC anoita kuti akwanise kushandiswa zvakasiyana-siyana zvakaita sezvikukutu, zvinosimbisa muviri, uye zvinomisa masero.
Chimwe chinhu chakakosha cheCMC kugona kwayo kugadzira firimu. Mhinduro dzeCMC dzinogona kuiswa mumafirimu ane hunhu hwakanaka hwemakanika, kujeka, uye kuchinjika. Mafirimu aya anogona kushandiswa semachira, mapurasitiki uye zvinhu zvekurongedza.
Pamusoro pezvo, CMC ine hunhu hwakanaka hwekubatanidza uye kubatana. Inoita hunhu hwakasimba nepamusoro-soro, kusanganisira huni, simbi, purasitiki nemachira. Hunhu uhwu hwakaita kuti CMC ishandiswe mukugadzira machira ekumonera, manamatiro neingi.
CMC viscosity
Kusimba kweCMC solutions kunoenderana nezvinhu zvakati wandei zvakaita sehuwandu, DS, MW, tembiricha, uye pH. Kazhinji, CMC solutions dzinoratidza kusimba kwakanyanya pahuwandu hwakakwira, DS, uye MW. Kusimba kunowedzerawo nekudzikira kwetembiricha uye pH.
Kuwanda kwemvura muCMC solutions kunodzorwa nekudyidzana kuripo pakati pemacheni epolymer nemamorekuru esolvent ari musolution. Mamorekuru eCMC anosangana nemamorekuru emvura kuburikidza nemahydrogen bonds, zvichigadzira hydration shell yakatenderedza macheni epolymer. Mvura iyi inoderedza kufamba kwemacheni epolymer, nokudaro ichiwedzera kuwanda kwemvura musolution.
Maitiro eCMC solutions anoratidzwa nema flow curves, ayo anotsanangura hukama huripo pakati pekusvuta kwe shear uye shear rate ye solution. CMC solutions dzinoratidza maitiro ekuyerera kwe flow asiri eNewtonian, zvinoreva kuti viscosity yavo inochinja ne shear rate. Pa shear rate yakaderera, viscosity yeCMC solutions yakakwira, nepo pa shear rates yakakwira, viscosity inoderera. Maitiro aya e shear thinning anokonzerwa ne polymer chains alignment uye stretched under shear stress, zvichikonzera kudzikira kwe intermolecular force pakati pe chains uye kudzikira kwe viscosity.
Kushandiswa kweCMC
CMC inoshandiswa zvakanyanya muminda yakasiyana-siyana nekuda kwehunhu hwayo hwakasiyana uye maitiro ayo e rheological. Muindasitiri yezvikafu, CMC inoshandiswa sechinhu chinosimbisa, chinosimbisa, chinosimbisa uye chinovandudza magadzirirwo. Inowedzerwa muzvikafu zvakaita se ice cream, zvinwiwa, masosi nezvinhu zvakabikwa kuti zvivandudze magadzirirwo azvo, kugara kwenguva refu uye kugara kwenguva refu. CMC inodzivirirawo kuumbwa kwemakristaro echando muzvikafu zvakaomeswa nechando, zvichikonzera chigadzirwa chakapfava, chine kirimu.
Muindasitiri yemishonga, CMC inoshandiswa semushonga unosunga, unobvisa tsvina uye unodzorwa mukugadzirwa kwemapiritsi. Inovandudza kusimba kwehupfu uye kuyerera kwayo uye inoita kuti mapiritsi acho ave akafanana uye agare zvakanaka. Nekuda kwehunhu hwayo hwekunamatira uye hwekunamatira, CMC inoshandiswawo semushonga unobatsira mukugadzirwa kwemaziso, mhuno, uye nemuromo.
Muindasitiri yemapepa, CMC inoshandiswa sechinhu chinonyorovesa, chinosunga machira uye chinosimbisa saizi yemuchina wekudzvanya. Inobatsira kuchengetedza pulp uye kuyerera kwemvura, inowedzera simba uye huwandu hwemapepa, uye inoita kuti pamusoro payo pave pakachena uye pakajeka. CMC inoshandawo sechidziviriro chemvura nemafuta, ichidzivirira inki kana zvimwe zvinwiwa kuti zvisapinde mupepa.
Muindasitiri yemachira, CMC inoshandiswa semushonga wekuisa saizi, muchina wekudhindisa, uye muchina wekuwedzera kudhaya. Inovandudza kunamira kwefiber, inowedzera kupinda kwemavara nekugadzika, uye inoderedza kukweshana nemakwinya. CMC inoitawo kuti jira rive rakapfava uye rakaomarara, zvichienderana neDS neMW yepolymer.
Muindasitiri yemigodhi, CMC inoshandiswa semushonga weflocculant, inhibitor uye rheology mukugadzirisa zvicherwa. Inovandudza kugadzika nekusefa kwezvinhu zvakasimba, inoderedza kuparadzaniswa kubva kugangue yemarasha, uye inodzora kusimba kwesimbi. CMC inoderedzawo kukanganisa kwemabasa ekuchera nharaunda nekuderedza kushandiswa kwemakemikari ane chepfu nemvura.
mukupedzisa
CMC chinhu chinoshandiswa zvakasiyana-siyana uye chinokosha chinoratidza hunhu hwakasiyana uye kusviba nekuda kwechimiro chayo chemakemikari uye kudyidzana kwayo nemvura. Kunyunguduka kwayo, kugona kwayo kugadzira mafirimu, kusunga uye kunamatira kunoita kuti ive yakakodzera kushandiswa kwakasiyana muzvikamu zvekudya, mishonga, bepa, machira uye migodhi. Kusviba kwemhinduro dzeCMC kunogona kudzorwa nezvinhu zvakati wandei, zvakaita sekuwanda, DS, MW, tembiricha, uye pH, uye inogona kuratidzwa nemaitiro ayo epseudoplastic uye shear-thinning. CMC ine simba rakanaka pamhando, kushanda zvakanaka uye kugarika kwezvigadzirwa nemaitiro, zvichiita kuti ive chikamu chakakosha cheindasitiri yemazuva ano.
Nguva yekutumira: Gunyana-25-2023