1. Cellulose inopfuudzwa neD-glucopyranose β- A linear polymer inoumbwa nekubatana kwe1,4 glycoside bonds. Iyo cellulose membrane pachayo yakanyanya crystalline uye haigoni kuve gelatinized mumvura kana kuumbwa kuva membrane, saka inofanira kuchinjwa nemakemikari. Iyo yemahara hydroxyl pazvinzvimbo C-2, C-3 uye C-6 inoiisa kuita kemikari uye inogona kuve oxidized reaction, etherification, esterification uye graft copolymerization. Iko kunyungudika kweiyo yakagadziridzwa cellulose inogona kuvandudzwa uye ine yakanaka yekugadzira firimu kuita.
2. Muna 1908, Swiss chemist Jacques Brandenberg akagadzira yekutanga cellulose firimu cellophane, iyo yakatanga kugadzirwa kwemazuva ano akajeka akapfava ekurongedza zvinhu. Kubva 1980s, vanhu vakatanga kudzidza yakagadziridzwa cellulose sefirimu rinodyiwa uye coating. Modified cellulose membrane ndeye membrane zvinhu zvakagadzirwa kubva kune zvakatorwa zvakawanikwa mushure mekugadziriswa kwekemikari ye cellulose. Rudzi urwu rwemembrane rune simba rakanyanya kusimba, kuchinjika, kujeka, kuramba kwemafuta, kunhuhwirira uye kusanaka, mvura yepakati uye oksijeni kuramba.
3. CMC inoshandiswa muzvokudya zvakakangwa, zvakadai seFrench fries, kuderedza kunwa kwemafuta. Kana ikashandiswa pamwe chete necalcium chloride, mhedzisiro yacho iri nani. HPMC uye MC anoshandiswa zvakanyanya mukupisa kurapwa chikafu, kunyanya muchikafu chakakangwa, nekuti iwo anopisa gels. MuAfrica, MC, HPMC, mapuroteni echibage uye amylose anoshandiswa kuvharisa mafuta anodyika mune zvakakangwa zvakakangwa bhinzi yakakangwa yakabikwa chikafu, sekupfapfaidza uye kunyudza izvi zvigadziriso zvemabhinzi matsvuku kugadzira mafirimu anodyika. Iyo yakanyikwa MC membrane zvinhu ndiyo inonyanya kushanda mugiresi barriers, iyo inogona kuderedza kunyura kwemafuta ne49%. Kazhinji kutaura, masampuli akanyikwa anoratidza kunyura kwemafuta akaderera pane akapfapfaidzwa.
4. MCuye HPMC inoshandiswawo mumasampunzi estarch senge mabhora embatatisi, batter, machipisi embatatisi uye mukanyiwa kuvandudza mashandiro ezvivhariso, kazhinji nekupfapfaidza. Tsvagiridzo inoratidza kuti MC ine basa rakanakisa rekuvhara unyoro uye mafuta.Kugona kwayo kuchengetedza mvura kunonyanya kukonzerwa nekuderera kwayo hydrophilicity. Kuburikidza nemaikorosikopu, zvinogona kuoneka kuti MC firimu ine yakanaka kunamatira kune yakakangwa chikafu. Zvidzidzo zvakaratidza kuti HPMC coating yakapfapfaidzwa pamabhora ehuku ine chengetedzo yakanaka yemvura uye inogona kuderedza zvakanyanya huwandu hwemafuta panguva yekufinya. Mvura yemuenzaniso wekupedzisira inogona kuwedzerwa ne 16.4%, iyo yepamusoro yemafuta inogona kuderedzwa ne17.9%, uye mukati memafuta emukati inogona kuderedzwa ne 33.7%.HPMC. Padanho rekutanga rejelisi, viscosity inowedzera nekukurumidza, kusungirirwa kwe-intermolecular kunoitika nekukurumidza, uye mhinduro gels pa50-90 ℃. Iyo gel layer inogona kudzivirira kutama kwemvura nemafuta panguva yefrying. Kuwedzera hydrogel kune yekunze dhizaini yehuku yakakangwa yakanyikwa muzvimedu zvechingwa inogona kuderedza dambudziko rekugadzirira, uye inogona kuderedza zvakanyanya kunyudzwa kwemafuta ezamu rehuku uye kuchengetedza yakasarudzika yekunzwa yemuenzaniso.
5. Kunyange zvazvo HPMC iri chinhu chakanaka chemufirimu chinodyiwa chine zvinhu zvakanaka zvemuchina uye kupikisa kwemhute yemvura, ine chikamu chiduku chemusika. Pane zvinhu zviviri zvinotadzisa kushandiswa kwayo: kutanga, igeri rinopisa, kureva kuti, viscoelastic yakasimba senge gel inoumbwa pakupisa kwepamusoro, asi iripo mukugadzirisa ine viscosity yakaderera zvikuru pamhepo yekushisa. Nekuda kweizvozvo, iyo matrix inofanirwa kuve yakabikwa uye yakaomeswa pakupisa kwakanyanya panguva yekugadzirira. Zvikasadaro, mukuputira, kupfapfaidza kana kunyura, mhinduro iri nyore kuyerera pasi, ichiita zvinhu zvisina kuenzana zvemafirimu, zvichikanganisa kuita kwemafirimu anodyiwa. Pamusoro pezvo, kuvhiya uku kunofanirwa kuve nechokwadi chekuti musangano wese wekugadzira unochengetwa uri pamusoro pe70 ℃, uchipedza kupisa kwakawanda. Nokudaro, zvakakosha kuderedza gel point kana kuwedzera viscosity yayo pakupisa kwakadzika. Chechipiri, inodhura zvakanyanya, inenge 100000 yuan/ton.
Nguva yekutumira: Kubvumbi-26-2024