Musiyano Pakati peHEC neEC

HEC uye EC marudzi maviri e-cellulose ethers ane zvivakwa zvakasiyana uye mashandisirwo. HEC inomirira hydroxyethyl cellulose, nepo EC ichimirira ethyl cellulose. Muchikamu chino, tichakurukura kusiyana kweHEC neEC maererano nemakemikari avo, zvivakwa, kushandiswa, uye kuchengeteka.

1. Mushonga Wemakemikari

HEC neEC vane zvimiro zvakasiyana zvemakemikari zvinovapa zvinhu zvakasiyana. HEC ipolymer inonyungudika nemvura inotorwa kubva ku cellulose. Iyo yakagadziridzwa cellulose ether ine hydroxyethyl mapoka akabatanidzwa kune cellulose musana. Dhigirii rekutsinhanisa (DS) yeHEC inoreva huwandu hwemapoka ehydroxyethyl aripo pane anhydroglucose unit (AGU) ye cellulose musana. Iyo DS yeHEC inogona kubva pa0.1 kusvika 3.0, ine yakakwirira DS kukosha inoratidza dhigirii repamusoro rekutsiva.

EC, kune rumwe rutivi, imvura-isina kunyungudika polima iyo inotorwawo kubva ku cellulose. Iyo yakagadziridzwa cellulose ether ine ethyl mapoka akabatanidzwa kune cellulose musana. Iyo DS yeEC inoreva huwandu hwemapoka ethyl aripo paAGU ye cellulose musana. Iyo DS yeEC inogona kubva pa1.7 kusvika 2.9, ine yakakwirira DS kukosha inoratidza dhigirii repamusoro rekutsiva.

2. Properties

HEC neEC vane zvivakwa zvakasiyana zvinoita kuti ive yakakodzera kune akasiyana maapplication. Zvimwe zvezvinhu zvakakosha zveHEC neEC zvakanyorwa pazasi:

a. Solubility: HEC inonyanya kunyungudika mumvura, nepo EC isinganyunguriki mumvura. Nekudaro, EC inogona kunyungudika mune organic solvents senge ethanol, acetone, uye chloroform.

b. Rheology: HEC ndeye pseudoplastic zvinhu, zvinoreva kuti inoratidza kuveura kutetepa maitiro. Izvi zvinoreva kuti viscosity yeHEC inoderera sezvo shear rate inowedzera. EC, kune rumwe rutivi, ndeye thermoplastic material, zvinoreva kuti inogona kupfava uye kuumbwa kana ichipisa.

c. Mafirimu ekugadzira zvinhu: HEC ine yakanaka yekugadzira firimu, iyo inoita kuti ive yakakodzera kushandiswa mukupfeka uye mafirimu. EC zvakare ine mafirimu-ekugadzira zvimiro, asi mafirimu anogona kunge asina brittle uye anowanzo kuputika.

d. Kugadzikana: HEC yakagadzikana pamusoro pehupamhi hwepH uye tembiricha mamiriro. EC zvakare yakagadzikana pamusoro pehupamhi pH renji, asi kugadzikana kwayo kunogona kukanganiswa nekupisa kwakanyanya.

3. Uses

HEC uye EC inoshandiswa mumhando dzakasiyana-siyana dzekushandisa mumaindasitiri ezvekudya, emishonga, uye ega ega. Mamwe makiyi ekushandiswa kweHEC neEC akanyorwa pazasi:

a. Indasitiri yechikafu: HEC inowanzoshandiswa seyakakora, inosimbisa, uye emulsifier muzvigadzirwa zvekudya zvakaita sesosi, mapfekero, uye zvinhu zvakabikwa. EC inoshandiswa sechinhu chinoputira chezvigadzirwa zvekudya senge chewing gum, confectionery, uye mapiritsi.

b. Indasitiri yemishonga: HEC inoshandiswa sebhainda, disintegrant, uye piritsi rekuvhara mumiriri mukugadzira mishonga. EC inoshandiswa sebhainda, mumiririri wekupfekedza, uye inosimudzira-kuburitsa mumiriri mukugadzirwa kwemishonga.

4. Safety

HEC neEC zvinowanzoonekwa zvakachengeteka kuti zvishandiswe muchikafu nemishonga yekushandisa. Nekudaro, sekunge chero chinhu chemakemikari, panogona kunge paine njodzi dzine chekuita nekushandiswa kwavo. Zvakakosha kutevera mazano akakurudzirwa ekushandiswa kweHEC neEC kuti ave nechokwadi chekushandisa kwavo kwakachengeteka uye kunobudirira.