Menene Hydroxypropyl Starch Ether?

Hydroxypropyl sitaci ether (HPS) sitaci ne da aka gyara wanda ya ƙara shahara a masana'antu daban-daban a matsayin wakili mai kauri, ƙarfafawa, da emulsifying. Yana da wani abu mai narkewa carbohydrate wanda aka samo daga masara na halitta, dankalin turawa, ko sitaci tapioca ta hanyar tsarin gyare-gyaren sinadarai wanda ya ƙunshi gabatarwar ƙungiyoyin hydroxypropyl zuwa kwayoyin sitaci.

Amfani da HPS ya zama sananne a cikin masana'antar abinci yayin da yake inganta rubutu, jin baki, da rayuwar rayuwar samfuran abinci da yawa. Ana amfani da ita a cikin miya, miya, miya, miya, da sauran kayayyakin da ke buƙatar kauri ko daidaitawa. Hakanan ana amfani da HPS a cikin masana'antar harhada magunguna don haɓaka isar da magunguna, da kuma a cikin kayan kwalliya da samfuran kulawa na sirri kamar shamfu, lotions, da creams.

A cikin wannan labarin, za mu bincika kaddarorin, tsarin masana'antu, aikace-aikace, da la'akarin aminci na HPS.

Abubuwan da ke cikin Hydroxypropyl Starch Ether

Hydroxypropyl sitaci ether fari ne, mara wari, kuma foda mara ɗanɗano wanda ke narkewa sosai a cikin ruwa da sauran kaushi na polar. Yana da nauyin kwayoyin halitta daga 1,000 zuwa 2,000,000 Daltons, dangane da matakin maye gurbin kungiyoyin hydroxypropyl. Matsayin maye gurbin (DS) yana nufin matsakaicin adadin ƙungiyoyin hydroxypropyl a kowace naúrar anhydroglucose (AGU) a cikin kwayoyin sitaci. Sakamakon DS mafi girma yana haifar da ƙarin hydrophilic da kwayoyin HPS mai narkewa da ruwa.

HPS yana samuwa a cikin maki daban-daban, dangane da danko, girman barbashi, da sauran kaddarorinsa. Yawan danko na HPS ana bayyana shi cikin sharuddan dankowar Brookfield, wanda aka auna shi a centipoise (cP) a ƙayyadaddun ƙimar ƙarfi da zafin jiki. Ana amfani da makin HPS masu ƙarfi don samfuran kauri, yayin da ƙananan makin da ake amfani da su don samfuran sirara.

Girman barbashi na HPS kuma yana da mahimmancin dukiya, kamar yadda yake rinjayar dispersibility da gudana. HPS yana samuwa a cikin nau'o'in nau'i daban-daban, kama daga foda mai kyau zuwa granules, dangane da aikace-aikacen.

Tsarin Kera na Hydroxypropyl Starch Ether

Samar da HPS ya ƙunshi gyare-gyaren sitaci na halitta ta amfani da amsa tsakanin sitaci da propylene oxide (PO), wanda ke gabatar da ƙungiyoyin hydroxypropyl zuwa kwayoyin sitaci. Yawancin lokaci ana aiwatar da tsarin a cikin maganin alkaline mai ruwa, tare da ƙari na mai kara kuzari kamar sodium hydroxide ko potassium hydroxide.

Tsarin gyare-gyare yana tasiri da abubuwa da yawa, kamar lokacin amsawa, zafin jiki, pH, PO / sitaci rabo, da kuma mai kara kuzari. Wadannan abubuwan suna shafar matakin maye gurbin, nauyin kwayoyin halitta, da sauran kaddarorin samfurin HPS da aka samu.

Sannan ana wanke sitaci da aka gyara, a cire shi, sannan a bushe shi don samun farin foda ko granules. Ana gwada samfurin HPS don wasu kaddarori kamar danko, girman barbashi, abun cikin danshi, da tsabta.

Aikace-aikace na Hydroxypropyl Starch Ether

Yin amfani da HPS a cikin gine-gine yana da amfani ta hanyoyi daban-daban, kamar inganta ƙarfi da dorewar siminti, rage yawan ruwa, da haɓaka mannewa da haɗin kai na turmi. Wasu aikace-aikacen gama gari na HPS a cikin gini sune:

1. Kankare:

Ana amfani da HPS a cikin kankare azaman mai rage ruwa, wanda ke rage adadin ruwan da ake buƙata don ƙirar haɗin da aka ba. Wannan yana haifar da ƙarin ƙarfi da karko na siminti, saboda yawan ruwa na iya raunana simintin kuma ya haifar da raguwa. Har ila yau, HPS yana haɓaka iya aiki da iya tafiyar da kankare, wanda ke da fa'ida a cikin manyan ayyuka.

2. Turmi:

Ana amfani da HPS a cikin turmi azaman filastik, wanda ke inganta aiki da daidaito na turmi. Wannan yana haifar da kyakkyawar alaƙa tsakanin turmi da sassan masonry, wanda ke da mahimmanci ga tsarin tsarin ginin. Har ila yau, HPS yana rage yawan ruwa a cikin turmi, wanda ke inganta ƙarfinsa da dorewa.

3. Gypsum kayayyakin:

Ana amfani da HPS a cikin samfuran gypsum kamar filasta da mahaɗin haɗin gwiwa azaman mai kauri da stabilizer. Wannan yana haifar da sauƙi kuma mafi dacewa da aikace-aikacen samfurori na gypsum, da kuma ingantaccen mannewa da haɗin kai. HPS kuma yana haɓaka lokacin saiti da ƙarfin samfuran gypsum, wanda ke da fa'ida a aikace-aikacen gini.

Baya ga aikace-aikacen da ke sama, ana kuma iya amfani da HPS a cikin wasu kayan gini kamar su rufi, adhesives, da manne. Yin amfani da HPS a cikin gine-gine na iya inganta inganci, inganci, da dorewar ayyukan gine-gine, da kuma rage farashi da sharar gida.