Hydroxyethylcellulose (HEC) ndi yosunthika komanso yolimbikira yomwe imagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana. Chigawochi chimachokera ku cellulose, polima yachilengedwe yomwe imapezeka mochuluka m'makoma a cellulose. Katundu wapadera wa HEC umapangitsa kukhala koyenera kukulitsa zinthu zosiyanasiyana, kuchokera kuzinthu zosamalira anthu kupita kuzinthu zamakampani.
Ma cellulose mwachidule
Ma cellulose ndi kagayidwe kachabechabe kamene kamapangidwa ndi unyolo wozungulira wa mamolekyu a glucose olumikizidwa ndi ma β-1,4-glycosidic bond. Ndilo gawo lalikulu la makoma a cell cell, kupereka kulimba ndi mphamvu kubzala ma cell. Komabe, mawonekedwe ake achilengedwe sasungunuka ndipo ali ndi magwiridwe antchito pang'ono pazinthu zina.
zotumphukira za cellulose
Pofuna kupititsa patsogolo magwiridwe antchito a cellulose, zotumphukira zosiyanasiyana zapangidwa posintha mawonekedwe ake. Chimodzi mwazinthu zoterezi ndi hydroxyethyl cellulose (HEC), momwe magulu a hydroxyethyl amalowetsedwa mu cellulose backbone. Kusintha kumeneku kumapatsa HEC katundu wapadera, ndikupangitsa kuti ikhale yosungunuka m'madzi komanso yogwira ntchito ngati thickener.
Zithunzi za HEC
Kusungunuka
Chimodzi mwazinthu zazikulu za HEC ndikusungunuka kwake m'madzi. Mosiyana ndi cellulose yachilengedwe, HEC imasungunuka mosavuta m'madzi, kupanga yankho lomveka bwino. Kusungunuka uku kumapangitsa kukhala kosavuta kuphatikiza mumitundu yosiyanasiyana.
Rheological katundu
HEC imasonyeza khalidwe la pseudoplastic kapena shear-thinning, kutanthauza kuti viscosity yake imachepa pansi pa kumeta ubweya wa ubweya ndikuwonjezeka kachiwiri pambuyo potsitsimula. Rheology iyi ndiyofunikira pakugwiritsa ntchito komwe kumafunikira kufalikira kapena kutsanulira mosavuta, monga kupanga utoto, zomatira ndi zinthu zosamalira anthu.
pH kukhazikika
HEC imakhala yokhazikika pamitundu yambiri ya pH, ndikupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito muzinthu za acidic, zandale komanso zamchere. Kusinthasintha kumeneku kwathandizira kuti anthu ambiri azilandira m'mafakitale osiyanasiyana kuphatikizapo zodzoladzola, mankhwala ndi zakudya.
Mapulogalamu a HEC
mankhwala osamalira anthu
Shampoos ndi Zopangira: HEC nthawi zambiri imagwiritsidwa ntchito kukulitsa zinthu zosamalira tsitsi, kupereka mamasukidwe abwino komanso kuwongolera kapangidwe kake.
Mafuta odzola ndi odzola: M'mapangidwe osamalira khungu, HEC imathandiza kukwaniritsa kugwirizana komwe kukufunikira ndikuwonjezera kufalikira kwa mafuta odzola ndi mafuta odzola.
Mankhwala otsukira m'mano: Kachitidwe kake ka pseudoplastic kamathandizira kupanga mankhwala otsukira mano omwe amalola kugawa mosavuta ndikufalikira panthawi yotsuka.
Zopaka ndi Zopaka
Utoto wa latex: HEC imathandizira kukulitsa kukhuthala ndi kukhazikika kwa utoto wa latex, kuwonetsetsa kuti ikugwiritsidwa ntchito padziko lonse lapansi.
Zomatira: Pazinthu zomatira, HEC imathandizira kuwongolera kukhuthala komanso kukonza zomangira.
mankhwala
Kuyimitsidwa kwa Oral: HEC imagwiritsidwa ntchito kukulitsa kuyimitsidwa kwapakamwa kuti ipereke mawonekedwe okhazikika komanso okoma pagulu lamankhwala.
Ma gels apamutu: Kusungunuka kwa HEC m'madzi kumapangitsa kuti ikhale yoyenera kupanga ma gels apamutu, kuonetsetsa kuti ntchito ndi kuyamwa mosavuta.
makampani azakudya
Maswiti ndi mavalidwe: HEC imagwiritsidwa ntchito kukulitsa ma sauces ndi mavalidwe, kuwongolera mawonekedwe awo komanso kumva kwapakamwa.
Zophika Zophika: M'maphikidwe ena ophika, HEC imathandizira kukulitsa ma batter ndi mtanda.
Kupanga ndi kuwongolera khalidwe
kaphatikizidwe
HEC imapangidwa ndi etherification ya cellulose ndi ethylene oxide pansi pamikhalidwe yoyendetsedwa. Mlingo wa substitution (DS) wa gulu la hydroxyethyl ukhoza kusinthidwa panthawi ya kaphatikizidwe, motero zimakhudza ntchito yomaliza ya HEC.
QC
Njira zoyendetsera bwino ndizofunikira kuti zitsimikizire kuti HEC imagwira ntchito mosiyanasiyana m'njira zosiyanasiyana. Magawo monga kulemera kwa maselo, kuchuluka kwa m'malo ndi chiyero amayang'aniridwa mosamala panthawi yopanga.
malingaliro a chilengedwe
Mofanana ndi mankhwala aliwonse, zinthu zachilengedwe ndizofunikira. HEC imachokera ku cellulose ndipo imakhala yowola kwambiri kuposa zopangira zina. Komabe, ndikofunikira kulingalira momwe chilengedwe chimakhudzira momwe amapangira ndikugwiritsa ntchito pazinthu zosiyanasiyana.
Pomaliza
Mwachidule, hydroxyethylcellulose (HEC) imawoneka ngati yolimbikitsira komanso yosunthika yogwiritsidwa ntchito m'mafakitale angapo. Makhalidwe ake apadera, kuphatikizapo kusungunuka kwa madzi, khalidwe la rheological ndi kukhazikika kwa pH, zimapangitsa kuti zikhale zofunikira pakupanga mitundu yosiyanasiyana ya mankhwala. Pamene mafakitale akupitirizabe kufunafuna njira zina zowononga chilengedwe, katundu wa HEC wa biodegradable wochokera ku zomera za cellulose zimapangitsa kukhala chisankho chokhazikika pa ntchito zosiyanasiyana. Kafukufuku wopitilira komanso kusinthika kwazinthu zotuluka m'ma cellulose monga HEC kungapangitse kupita patsogolo, kupereka magwiridwe antchito apamwamba komanso kuchepetsa chilengedwe.
Nthawi yotumiza: Dec-02-2023