Musiyano uripo pakati peHPMC neHEC

Zvese zviri zviviri hydroxypropyl methylcellulose ne hydroxyethyl cellulose i cellulose, musiyano uripi pakati pezviviri izvi?

"Musiyano uripo pakati peHPMC neHEC"

01 HPMC neHEC
Hydroxypropyl methylcellulose (Hypromellose), inozivikanwawo sehypromellose, imhando ye non-ionic cellulose mixed ether. Ipolymer inogadzirwa zvishoma nezvishoma, isingashande, viscoelastic inowanzoshandiswa semafuta mukurapa maziso, kana semushonga unobatsira kana kuti mushonga unonwiwa.
Hydroxyethyl cellulose (HEC), makemikari fomura (C2H6O2)n, isimbi chena kana yero yakajeka, isina hwema, isina chepfu, ine fibrous kana powdery solid inoumbwa nealkaline cellulose ne ethylene oxide (kana chloroethanol). Inogadzirwa ne etherification uye ndeye non-ionic soluble cellulose ethers. Nekuti HEC ine hunhu hwakanaka hwekukora, kumisa, kuparadzira, emulsifying, bonding, film-forming, kuchengetedza hunyoro uye kupa protective colloid, yakashandiswa zvakanyanya mukutsvaga mafuta, coatings, kuvaka, mishonga nechikafu, machira, bepa ne polymer Polymerization nedzimwe nzvimbo, 40 mesh sieving rate ≥ 99%.

02 musiyano
Kunyangwe zvese zviri cellulose, pane misiyano yakawanda pakati pezviviri izvi:
Hydroxypropyl methylcellulose nehydroxyethylcellulose zvakasiyana muhunhu, mashandisirwo, uye kunyungudika.

1. Zvinhu Zvakasiyana
Hydroxypropyl methylcellulose: (HPMC) ifiber chena kana yakafanana nefiber chena kana granular powder, inowanikwa mumhando dzakasiyana dze nonionic cellulose mixed ethers. Ipolymer ye viscoelastic isina kugadzirwa inorarama semi-synthetic.
Hydroxyethylcellulose: (HEC) ifiber chena kana yero, isina hwema uye isina chepfu kana poda yakasimba. Inopiswa ne alkaline cellulose uye ethylene oxide (kana chlorohydrin). Inowanikwa mu non-ionic soluble cellulose ether.

2. Kunyunguduka kwakasiyana
Hydroxypropyl methylcellulose: hainyungudike zvachose muethanol, ether uye acetone. Mushonga wecolloidal wakajeka kana kuti une makore mashoma wakanyungudutswa mumvura inotonhora.
Hydroxyethyl cellulose: Ine hunhu hwekukora, kumisa, kusunga, kusanganisa, kuparadzira uye kunyorovesa. Inogona kugadzira mhinduro dzakasiyana-siyana uye ine munyu wakanaka kwazvo wekunyungudutsa ma electrolytes.
Hydroxypropyl methylcellulose ine hunhu hwekugona kukora, kuramba munyu mushoma, kugadzikana kwepH, kuchengetedza mvura, kugadzikana kwemativi, hunhu hwakanaka hwekugadzira firimu, kuramba ma enzyme akawanda, kupararira uye kubatana.

Kune misiyano yakawanda pakati pezviviri izvi, uye kushanda kwazvo muindasitiri kwakasiyanawo zvikuru.

Hydroxypropyl methylcellulose inonyanya kushandiswa sechinosimbisa, chinoparadzira uye chinosimbisa muindasitiri yekuputira, uye ine kunyungudika kwakanaka mumvura kana mune zvinonyungudutsa zvakasikwa. Muindasitiri yekuvaka, inogona kushandiswa mu simende, gypsum, latex putty, plaster, nezvimwewo, kuvandudza kupararira kwejecha resimende uye kuvandudza zvakanyanya kuchena kwepurasitiki uye kuchengetedza mvura mudhaka.
Hydroxyethyl cellulose ine hunhu hwekukora, kumisa, kusunga, kusanganisa, kuparadzira uye kunyorovesa. Inogona kugadzira mhinduro dzakasiyana-siyana uye ine munyu wakanaka wekunyungudutsa ma electrolytes. Hydroxyethyl cellulose ipurasitiki inoshanda, inogadzirisa, inosimbisa, inosimbisa uye inoparadzanisa mu shampoos, hair sprays, neutralizers, conditioners uye cosmetics; mu washing powders. Pakati pane rudzi rwechinhu chinodzora tsvina. Hydroxyethyl cellulose inonyunguduka nekukurumidza pakupisa kwakanyanya, izvo zvinogona kukurumidzisa kugadzirwa uye kuvandudza kushanda zvakanaka kwekugadzira. Chinhu chiri pachena che detergents dzine hydroxyethyl cellulose ndechekuti inogona kuvandudza kutsvedzerera uye mercerization yemachira.