1. I-Cellulose idlula nge-D-glucopyranose β- I-polymer ethe ngqo eyenziwe ngokudityaniswa kweebhondi ze-glycoside eziyi-1,4. I-membrane ye-cellulose ngokwayo i-crystalline kakhulu kwaye ayinakugaywa emanzini okanye yenziwe ibe yi-membrane, ngoko ke kufuneka iguqulwe ngokweekhemikhali. I-hydroxyl ekhululekileyo kwiindawo ze-C-2, C-3 kunye ne-C-6 iyinika umsebenzi weekhemikhali kwaye inokuba yi-oxidized reaction, etherification, esterification kunye ne-graft copolymerization. Ukunyibilika kwe-cellulose eguquliweyo kunokuphuculwa kwaye kunentsebenzo entle yokwenza ifilimu.
2. Ngo-1908, isazi semichiza saseSwitzerland uJacques Brandenberg walungiselela i-cellulose film cellulose cellophane yokuqala, eyaba nguvulindlela ekuphuhlisweni kwezinto zanamhlanje zokupakisha ezithambileyo ezibonakalayo. Ukususela ngeminyaka yoo-1980, abantu baqala ukufunda i-modified cellulose njengefilimu etyiwayo kunye nokwaleka. I-modified cellulose membrane yinto eyenziwe nge-membrane eyenziwe ngezinto ezifunyenwe emva kokuguqulwa kweekhemikhali ze-cellulose. Olu hlobo lwe-membrane lunamandla aphezulu okuxinana, ukuguquguquka, ukucaca, ukumelana neoyile, ukungavumba nokungancasa, ukumelana namanzi kunye neoksijini okuphakathi.
3. I-CMC isetyenziswa ekutyeni okuqhotsiweyo, njengeefries, ukunciphisa ukufunxwa kwamafutha. Xa isetyenziswa kunye ne-calcium chloride, isiphumo siba ngcono. I-HPMC kunye ne-MC zisetyenziswa kakhulu ekutyeni okushushu, ngakumbi ekutyeni okuqhotsiweyo, kuba zii-thermal gels. E-Afrika, i-MC, i-HPMC, iproteni yombona kunye ne-amylose zisetyenziselwa ukuvimba ioyile etyiwayo ekutyeni okusekwe kwintlama yeembotyi ezibomvu eziqhotsiweyo, njengokutshiza nokuntywilisela ezi zisombululo zezinto eziluhlaza kwiibhola zeembotyi ezibomvu ukulungiselela iifilimu ezityiwayo. Izinto ze-MC membrane eziqhotsiweyo zezona zisebenzayo kakhulu kwi-grease barrier, ezinokunciphisa ukufunxwa kweoyile ngama-49%. Ngokubanzi, iisampulu eziqhotsiweyo zibonisa ukufunxwa kweoyile okuphantsi kunezo zitshiziweyo.
4. MCkwaye i-HPMC ikwasetyenziswa kwiisampuli zesitatshi ezifana neebhola zeetapile, intlama, iitships zeetapile kunye nentlama ukuphucula ukusebenza kwesithintelo, ngesiqhelo ngokutshiza. Uphando lubonisa ukuba i-MC inokusebenza okungcono kakhulu kokuthintela ukufuma kunye neoyile. Amandla ayo okugcina amanzi ikakhulu abangelwa kukungakwazi kwayo ukucoca amanzi. Nge-microscope, kunokubonwa ukuba ifilimu ye-MC inamathela kakuhle ekutyeni okuqhotsiweyo. Izifundo zibonise ukuba i-HPMC coating etshizwa kwiibhola zeenkukhu inokugcina amanzi kakuhle kwaye inokunciphisa kakhulu umxholo weoyile ngexesha lokuqhotsa. Umxholo wamanzi wesampulu yokugqibela unokwandiswa nge-16.4%, umxholo womphezulu weoyile unokuncipha nge-17.9%, kwaye umxholo weoyile yangaphakathi unokuncipha nge-33.7%. Ukusebenza kweoyile yesithintelo kunxulumene nokusebenza kwejeli yobushushu yeI-HPMC. Kwinqanaba lokuqala lejeli, i-viscosity iyanda ngokukhawuleza, ukubopha phakathi kweemolekyuli kwenzeka ngokukhawuleza, kwaye i-gels yesisombululo ifikelela kuma-50-90 ℃. Umaleko wejeli unokuthintela ukufuduka kwamanzi kunye neoyile ngexesha lokuqhotsa. Ukongeza i-hydrogel kumaleko wangaphandle wee-chicken strips eziqhotsiweyo ezifakwe kwiimvuthuluka zesonka kunokunciphisa ingxaki yenkqubo yokulungiselela, kwaye kunokunciphisa kakhulu ukufunxwa kweoyile yesifuba senkukhu kwaye kugcine iimpawu ezizodwa zemvakalelo zesampuli.
5. Nangona i-HPMC iyinto efanelekileyo yefilimu etyiwayo eneempawu ezilungileyo zoomatshini kunye nokumelana nomphunga wamanzi, ayinasabelo sikhulu kwimarike. Kukho izinto ezimbini ezithintela ukusetyenziswa kwayo: okokuqala, yijeli yobushushu, oko kukuthi, ijeli efana ne-viscoelastic eqinileyo eyenziwe kubushushu obuphezulu, kodwa ikhona kwisisombululo esine-viscosity ephantsi kakhulu kubushushu begumbi. Ngenxa yoko, i-matrix kufuneka itshiswe kwaye yomiswe kubushushu obuphezulu ngexesha lenkqubo yokulungiselela. Ngaphandle koko, kwinkqubo yokugquma, ukutshiza okanye ukuntywila, isisombululo kulula ukusihla, senza izixhobo zefilimu ezingalinganiyo, nto leyo echaphazela ukusebenza kweefilimu ezityiwayo. Ukongeza, olu sebenzi kufuneka luqinisekise ukuba yonke indawo yokusebenzela yemveliso igcinwa ngaphezulu kwama-70 ℃, ichitha ubushushu obuninzi. Ke ngoko, kuyimfuneko ukunciphisa inqaku layo lejeli okanye ukwandisa i-viscosity yayo kubushushu obuphantsi. Okwesibini, ibiza kakhulu, malunga ne-100000 yuan/ton.
Ixesha leposi: Epreli-26-2024