Cellulose, iyo yakanyanya kuwanda organic komboni paPasi, inoratidza zvinoshamisa zvivakwa, imwe yacho kugona kwayo kutora mvura.Iyi hygroscopic chimiro che cellulose inowana kushandiswa kwakakura mumaindasitiri akasiyana, kubva kumachira kusvika kumishonga.Kunzwisisa maitiro ari kuseri kwekunyudzwa kwemvura kwe cellulose kwakakosha pakugadzirisa mashandisirwo ayo mumashandisirwo akasiyana.
Nhanganyaya:
Cellulose, polysaccharide inoumbwa neglucose units yakabatanidzwa ne β (1 → 4) glycosidic bonds, ndiyo inonyanya kuumbwa yemiti yemasero emadziro.Kuwanda kwayo mumasikirwo, kuvandudzwa, uye biodegradability inoita kuti ive chinhu chinodiwa zvakanyanya kune akawanda maindasitiri ekushandisa.Chimwe chezvinhu zvinonakidza zve cellulose kugona kwayo kutora mvura nemazvo.Hunhu uhu hune zvahunoreva muzvikamu zvakasiyana-siyana zvakaita semachira, kugadzira mapepa, chikafu, mishonga yemishonga, uye biomaterials.Kunzwisisa maitiro ari pasi pemabatiro ekunyudza mvura kweselulosi kwakakosha pakushandisa kugona kwayo kuzere mumashandisirwo aya.
Zvinhu Zvinokonzera Kunyura Kwemvura neCellulose:
Zvinhu zvakati wandei zvinokonzeresa kunyudza kwemvura kwe cellulose:
Crystallinity: Iyo crystalline chimiro che cellulose inokanganisa zvakanyanya kunyudza kwayo mvura.Matunhu eCrystalline anoratidza kunyura kwemvura kwakadzikira zvichienzaniswa nematunhu amorphous nekuda kwekurambidzwa kuwana mamorekuru emvura.
Surface Area: Iyo yekumusoro nzvimbo ye cellulose fiber inoita basa rakakosha mukunyudza mvura.Yakanyatsopatsanurwa cellulose ine nzvimbo yepamusoro inotaridza kutora mvura yakawanda kana ichienzaniswa nebulkier cellulose zvimiro.
Hydrophilicity: Mapoka eHydroxyl (-OH) aripo mumamorekuru eseruseru anovapa hydrophilic, zvichiita kuti kunyura kwemvura kuburikidza nehydrogen bonding.
Dhigirii rePolymerization: Cellulose ine dhigirii repamusoro repolymerization rinowanzo kuve nepamusoro ekunyudza mvura nekuda kwekuvapo kweakawanda mapoka ehydroxyl payuniti mikuru.
Tembiricha uye Hukama Humidity: Mamiriro ezvakatipoteredza akadai setembiricha uye hunyoro hunoenderana zvakanyanya kukonzeresa maitiro ekunyudza mvura kweselulosi.Kunyanya tembiricha uye humidity mazinga anowanzo wedzera kunyura kwemvura nekuda kwekuwedzera kwekufamba kwemamorekuru emvura.
Nzira dzeMaunhu:
Nzira dzakasiyana-siyana dzinoshandiswa kuratidza kunyura kwemvura kwe cellulose:
Gravimetric Analysis: Gravimetric nzira dzinosanganisira kuyera kuwanda kwehuremu hwemaserulosi samples pakusangana nemvura nekufamba kwenguva.Izvi zvinopa huwandu hwe data pamvura yekunyudza kinetics uye equilibrium hunyoro hwemukati.
Fourier Shandura Infrared Spectroscopy (FTIR): FTIR spectroscopy inoshandiswa kuongorora shanduko mumapoka anoshanda e cellulose pakutorwa kwemvura.Kuchinja munzvimbo dzepamusoro uye kusimba kunoratidza kudyidzana pakati pe cellulose nemamorekuru emvura.
X-ray Diffraction (XRD): XRD inoshandiswa kuongorora shanduko mu cellulose crystallinity zvichitevera kunyudzwa kwemvura.Kuderera kwekristallinity index kunoratidza kuzvimba kweselulosi fiber nekuda kwekutora mvura.
Kuongorora Electron Microscopy (SEM): SEM inobvumira kutaridzika kwekuchinja kwe morphological mu cellulose fibers pamberi uye mushure mekunyura kwemvura.Inopa ruzivo rwekuumbwa kwekuvimbika uye porosity ye cellulose zvinhu.
Kushandiswa kweCellulose seHygroscopic Material:
Iyo hygroscopic chimiro che cellulose inowana akasiyana mashandisirwo mumaindasitiri akasiyana:
Micheka: Mafibisi ane cellulose akadai sekotoni uye rayon anoshandiswa zvakanyanya mukugadzira machira nekuda kwekugona kwavo kutora unyoro, kupa nyaradzo uye kufema kune zvipfeko.
Papermaking: Cellulose fibers inoshanda seyekutanga mbishi zvinhu mukugadzira mapepa.Kunyura kwemvura yavo kunokanganisa kunaka kwebepa, kudhindwa, uye simba.
Indasitiri Yechikafu: Maseruru anotorwa semethylcellulose uye carboxymethylcellulose anoshandiswa seakobvu maajenti, stabilizers, uye emulsifiers muzvigadzirwa zvekudya.Kugona kwavo kunyura kwemvura kunowedzera kunaka uye kugadzikana kwehupenyu.
Pharmaceuticals: Cellulose-based excipients inowanzoshandiswa mukugadzirwa kwemishonga kuitira kukwanisa kwavo kudzora kusunungurwa kwezvinodhaka, kuvandudza kugadzikana, uye kuwedzera bioavailability.Ivo zvakare vanobatsira mukuparara uye kuparadzwa kwemapiritsi nemakapisi.
Biomaterials: Cellulose hydrogels nemafirimu ari kubuda seanovimbisa biomaterials kune akasiyana biomedical application, kusanganisira kuendesa zvinodhaka, engineering yetishu, uye kuporeswa kwemaronda.Yavo yakakwirira yekunyudza mvura inogonesa hydration inoshanda uye masero kuwanda.
Kugona kunoshamisa kweCellulose kutora mvura kunobva kune yakasarudzika maitiro uye makemikari zvinhu.Kunzwisisa zvinhu zvinopesvedzera kunyudzwa kwemvura, nzira dzehunhu, uye mashandisiro e cellulose sechinhu chehygroscopic kwakakosha pakugadzirisa kushandiswa kwayo mumaindasitiri akasiyana.Kuenderera mberi nekutsvagisa mundima iyi kuchawedzera kuwedzera huwandu hwemashandisirwo uye kubatsira mukuvandudza kwezvinhu zvinogoneka zvine hunyanzvi hwekuita.
Nguva yekutumira: Mar-29-2024