Quaternized hydroxyethyl cellulose

Quaternized hydroxyethyl cellulose (QHEC) ndi mtundu wosinthidwa wa hydroxyethyl cellulose (HEC) womwe wachitika ndi quaternary ammonium compound. Kusintha kumeneku kumasintha zinthu za HEC ndipo kumabweretsa cationic polima yomwe ili ndi ntchito zambiri, kuphatikizapo zinthu zosamalira anthu, nsalu, ndi zokutira mapepala.

The quaternization ya HEC imaphatikizapo kuwonjezeredwa kwa quaternary ammonium compound ku HEC molecule, yomwe imayambitsa ndalama zabwino mu polima. Chomwe chimagwiritsidwa ntchito kwambiri cha quaternary ammonium pachifukwa ichi ndi 3-chloro-2-hydroxypropyl trimethylammonium chloride (CHPTAC). Kapangidwe kameneka kamakhala ndi magulu a hydroxyl pa molekyulu ya HEC, zomwe zimapangitsa kuti pakhale molekyu ya QHEC yodziwika bwino.

Chimodzi mwazofunikira kwambiri za HEC ndi zinthu zosamalira anthu, monga ma shampoos, zowongolera, ndi zopangira tsitsi. HEC imapereka mawonekedwe abwino kwambiri komanso owononga tsitsi, kupangitsa kuti ikhale yosavuta kupesa ndi kalembedwe. HEC imagwiritsidwanso ntchito ngati chowonjezera ndi rheology modifier muzinthu izi, kupereka mawonekedwe apamwamba komanso kupititsa patsogolo ntchito yonse.

Popanga nsalu, HEC imagwiritsidwa ntchito ngati chopangira thonje ndi ulusi wina wachilengedwe. HEC ikhoza kupititsa patsogolo kuuma ndi kutsekemera kwa nsalu, kuzipangitsa kuti zikhale zolimba komanso zosavuta kuzigwira panthawi yopanga. HEC imathanso kupititsa patsogolo kumamatira kwa utoto ndi zinthu zina zomaliza pansalu, zomwe zimapangitsa kuti pakhale mitundu yowala komanso kuchapa bwino.

HEC imagwiritsidwanso ntchito popaka mapepala pofuna kukonza kukana kwa madzi ndi kusindikizidwa kwa pepala. HEC imatha kuwongolera zomatira ndikuchepetsa kulowa kwa madzi ndi inki mu ulusi wamapepala, zomwe zimapangitsa kuti zikhale zowoneka bwino komanso zowoneka bwino. HEC imathanso kupereka kusalala kwapamwamba komanso gloss pamapepala, kukulitsa mawonekedwe ake komanso mawonekedwe ake.

Chimodzi mwazofunikira za HEC ndi chikhalidwe chake cha cationic, chomwe chimapangitsa kuti ikhale yogwira mtima kwambiri pamapangidwe omwe ali ndi ma anionic surfactants. Anionic surfactants amagwiritsidwa ntchito kwambiri pazinthu zosamalira anthu, koma amatha kuyanjana ndi zokometsera zopanda ionic, monga HEC, ndikuchepetsa mphamvu zawo. HEC, pokhala cationic, akhoza kupanga amphamvu electrostatic kucheza ndi surfactants anionic, kuchititsa thickening bwino ndi bata.

Phindu lina la HEC ndilogwirizana ndi zinthu zina zambiri. HEC ikhoza kugwiritsidwa ntchito ndi zosakaniza zina za cationic, anionic, ndi zopanda ionic popanda kusokoneza ntchito yake. Izi zimapangitsa kukhala chinthu chosunthika chomwe chimatha kugwiritsidwa ntchito mumitundu yosiyanasiyana ndikugwiritsa ntchito.

HEC imapezeka m'makalasi osiyanasiyana ndi ma viscosities, malingana ndi kagwiritsidwe ntchito ndi kapangidwe kake. Amaperekedwa ngati ufa womwe umatha kumwazikana mosavuta m'madzi kapena zosungunulira zina. QHEC ikhoza kuperekedwanso ngati mankhwala osalowerera ndale kapena odziletsa okha, omwe amachotsa kufunikira kwa njira zowonjezera zowonongeka panthawi yokonzekera.

Mwachidule, quaternized hydroxyethyl cellulose ndi mtundu wosinthidwa wa hydroxyethyl cellulose womwe wachitika ndi quaternary ammonium compound. HEC ndi cationic polima yomwe ili ndi ntchito zosiyanasiyana, kuphatikiza pazinthu zosamalira anthu, nsalu, ndi zokutira zamapepala. HEC imapereka mawonekedwe abwino kwambiri komanso makulidwe, imathandizira magwiridwe antchito a anionic surfactants, ndipo imagwirizana ndi zinthu zina zambiri. Kusinthasintha komanso magwiridwe antchito a HEC kumapangitsa kuti ikhale yofunikira pamapangidwe osiyanasiyana ndikugwiritsa ntchito.