1. Cellulose inopfuudzwa neD-glucopyranose β- A linear polymer inoumbwa nekubatana kwe1,4 glycoside bonds. Cellulose membrane pachayo ine crystalline yakawanda uye haigone kusanganiswa mumvura kana kugadzirwa kuita membrane, saka inofanira kuchinjwa nemakemikari. Iyo free hydroxyl panzvimbo dzeC-2, C-3 neC-6 inoipa basa remakemikari uye inogona kuoxidized reaction, etherification, esterification uye graft copolymerization. Kunyunguduka kwemodified cellulose kunogona kuvandudzwa uye kune kugona kwakanaka kwekugadzira firimu.
2. Muna 1908, musayendisiti wekuSwitzerland, Jacques Brandenberg, akagadzira cellulose film cellophane yekutanga, iyo yakatanga kugadzirwa kwezvinhu zvemazuva ano zvinopenya zvakapfava. Kubva kuma1980, vanhu vakatanga kudzidza modified cellulose sefirimu rinodyiwa uye coating. Modified cellulose membrane imembrane yakagadzirwa kubva kune zvinobva muzvinhu zvakawanikwa mushure mekushandurwa kwemakemikari e cellulose. Rudzi urwu rwemembrane rune simba guru rekudhonza, kuchinjika, kujeka, kuramba mafuta, kusanhuwa uye kuravira, kuramba kwepakati nemvura uye oxygen.
3. CMC inoshandiswa muzvikafu zvakakangwa, zvakaita seFrench fries, kuderedza kunyudzwa kwemafuta. Kana ikashandiswa pamwe chete necalcium chloride, mhedzisiro yacho inova nani. HPMC neMC zvinoshandiswa zvakanyanya muzvikafu zvinopiswa, kunyanya muzvikafu zvakakangwa, nekuti imafuta anodziya. MuAfrica, MC, HPMC, protein yechibage neamylose zvinoshandiswa kudzivirira mafuta anodyiwa muzvikafu zvakakangwa zvakadzika, zvakaita sekupfapfaidza nekunyika mhinduro idzi dzezvinhu zvisina kubikwa pamabhora ebhinzi tsvuku kugadzira mafirimu anodyiwa. Chinhu cheMC membrane chakanyikwa ndicho chinoshanda zvakanyanya mukudzivirira mafuta, izvo zvinogona kuderedza kunyudzwa kwemafuta ne49%. Kazhinji, sampuro dzakanyikwa dzinoratidza kunyudzwa kwakaderera kwemafuta pane dzakapfapfaidzwa.
4. MCuye HPMC inoshandiswawo muzviyero zvestarch zvakaita semabhora embatatisi, mukanyiwa, machipisi embatatisi nemukanyiwa kuti zvivandudze mashandiro ekudzivirira, kazhinji nekupfapfaidza. Tsvagiridzo inoratidza kuti MC ine mashandiro akanakisa ekudzivirira hunyoro nemafuta. Kugona kwayo kuchengetedza mvura kunonyanya kukonzerwa nekusanyorova kwayo. Kuburikidza nemaikorosikopu, zvinogona kuonekwa kuti firimu reMC rinonamira zvakanaka pachikafu chakakangwa. Zvidzidzo zvakaratidza kuti HPMC coating inopfapfaidzwa pamabhora ehuku ine kuchengetedza mvura kwakanaka uye inogona kuderedza zvakanyanya huwandu hwemafuta panguva yekukangwa. Hunhu hwemvura hwemuenzaniso wekupedzisira hunogona kuwedzerwa ne16.4%, huwandu hwemafuta pamusoro hunogona kuderedzwa ne17.9%, uye huwandu hwemafuta emukati hunogona kuderedzwa ne33.7%. Kushanda kwemafuta ekudzivirira kune chekuita nekushanda kwegel yekupisa kweHPMC. Padanho rekutanga regel, viscosity inowedzera nekukurumidza, kubatana pakati pemamorekuru kunoitika nekukurumidza, uye magel emushonga pa50-90 ℃. Rutivi rwegel runogona kudzivirira kufamba kwemvura nemafuta panguva yekukangwa. Kuwedzera hydrogel kune rutivi rwekunze rwezvimedu zvehuku zvakakangwa zvakanyikwa mumafufu echingwa kunogona kuderedza dambudziko rekugadzirira, uye kunogona kuderedza zvakanyanya kunwa kwemafuta kwezamu rehuku uye kuchengetedza hunhu hwakasiyana hwekunzwa hwemuenzaniso.
5. Kunyangwe HPMC iri firimu rinodyiwa rakanaka rine hunhu hwakanaka hwemakanika uye rinodzivirira mhute yemvura, haina mugove mudiki pamusika. Pane zvinhu zviviri zvinodzivisa kushandiswa kwayo: chekutanga, igel rinopisa, kureva kuti, gel rakasimba rakafanana ne viscoelastic rakaumbwa pakupisa kwakanyanya, asi riripo mumushonga une viscosity yakaderera pakupisa kwemumba. Nekuda kweizvozvo, matrix inofanira kupiswa uye kuomeswa pakupisa kwakanyanya panguva yekugadzirira. Zvikasadaro, mukuita kwekuputira, kupfapfaidza kana kunyudza, mhinduro yacho iri nyore kuyerera, ichigadzira zvinhu zvisina kufanana zvefirimu, zvichikanganisa mashandiro emafirimu anodyiwa. Pamusoro pezvo, kushanda uku kunofanirwa kuve nechokwadi chekuti workshop yese yekugadzira inochengetwa pamusoro pe70 ℃, ichipedza kupisa kwakawanda. Naizvozvo, zvakakosha kuderedza gel point yayo kana kuwedzera viscosity yayo pakupisa kwakaderera. Chechipiri, inodhura zvikuru, inenge 100000 yuan/tani.
Nguva yekutumira: Kubvumbi-26-2024