Itandukaniro hagati ya HPMC na HEC

Hydroxypropyl methylcellulose na hydroxyethyl selulose byombi ni selile, ni irihe tandukaniro riri hagati yombi?

“Itandukaniro riri hagati ya HPMC na HEC”

01 HPMC na HEC
Hydroxypropyl methylcellulose (Hypromellose), izwi kandi nka hypromellose, ni ubwoko bwa selile idafite ionic ivanze na ether. Ni semisintetike, idakora, viscoelastic polymer ikunze gukoreshwa nk'amavuta yo kuvura amaso, cyangwa nk'imodoka cyangwa ibinyabiziga bivura imiti.
Hydroxyethyl selulose (HEC), formulaire ya chimique (C2H6O2) n, ni umuhondo wera cyangwa urumuri rwumuhondo, impumuro nziza, fibrous idafite uburozi cyangwa ifu yifu igizwe na alkaline selulose na okiside ya Ethylene (cyangwa chloroethanol) Yateguwe na etherification kandi ni iya non- ionic soluble selulose ethers. Kubera ko HEC ifite ibyiza byo kubyimba, guhagarika, gutatanya, kwigana, guhuza, gukora firime, kurinda ubushuhe no gutanga colloide ikingira, yakoreshejwe cyane mubushakashatsi bwamavuta, gutwikira, kubaka, ubuvuzi nibiribwa, imyenda, impapuro na polymer Polymerisation n'indi mirima, igipimo cya mesh 40 mesh 99%.

02 itandukaniro
Nubwo byombi ari selile, hariho itandukaniro ryinshi hagati yibi:
Hydroxypropyl methylcellulose na hydroxyethylcellulose bitandukanye mumiterere, imikoreshereze, hamwe no gukomera.

1. Ibintu bitandukanye
Hydroxypropyl methylcellulose: (HPMC) ni fibre yera cyangwa isa na fibre yera cyangwa ifu ya granular, ikaba ari ya selile itandukanye ya selile. Nibice bya sintetike idafite ubuzima bwa polymer.
Hydroxyethylcellulose: (HEC) ni fibre yera cyangwa umuhondo, impumuro nziza na nontoxic fibre cyangwa ifu ikomeye. Itangwa na selile ya alkaline na okiside ya Ethylene (cyangwa chlorohydrin). Nibintu bitari ionic soluble selulose ether.

2. Gukemura ibibazo bitandukanye
Hydroxypropyl methylcellulose: hafi idashonga muri Ethanol yuzuye, ether na acetone. Umuti usobanutse cyangwa wijimye gato wa colloidal ushonga mumazi akonje.
Hydroxyethyl selulose: Ifite imiterere yo kubyimba, guhagarika, guhambira, kwigana, gutatanya no gutanga amazi. Irashobora gutegura ibisubizo muburyo butandukanye bwijimye kandi ifite umunyu mwinshi wa electrolytite.
Hydroxypropyl methylcellulose ifite ibiranga ubushobozi bwo kubyimba, kurwanya umunyu muke, pH ihagaze neza, kugumana amazi, guhagarara neza, ibintu byiza bikora firime, kurwanya enzyme nyinshi, gukwirakwiza no guhuriza hamwe.

Hariho itandukaniro ryinshi hagati yibi byombi, kandi akamaro kazo muruganda nako karatandukanye.

Hydroxypropyl methylcellulose ikoreshwa cyane mubyimbye, ikwirakwiza na stabilisateur mu nganda zitwikiriye, kandi ikagira imbaraga nziza mumazi cyangwa kumashanyarazi. Mu nganda zubaka, irashobora gukoreshwa muri sima, gypsumu, latx putty, plaster, nibindi, kugirango habeho ikwirakwizwa ryumusenyi wa sima kandi bitezimbere cyane plastike no kubika amazi ya minisiteri.
Hydroxyethyl selulose ifite imiterere yo kubyimba, guhagarika, guhambira, kwigana, gutatanya no gutanga amazi. Irashobora gutegura ibisubizo muburyo butandukanye bwijimye kandi ifite umunyu mwinshi wa electrolytite. Hydroxyethyl selulose ni firime nziza yambere, tackifier, kubyimbye, stabilisateur no gukwirakwiza muri shampo, imisatsi yimisatsi, kutabogama, kondereti no kwisiga; mu koza ifu Hagati ni ubwoko bwumwanda wo gusubiramo umwanda. Hydroxyethyl selulose ishonga vuba ku bushyuhe bwinshi, bushobora kwihutisha umusaruro no kunoza umusaruro. Ikintu kigaragara cyimyenda irimo hydroxyethyl selile ni uko ishobora kunoza neza no guhuza imyenda.