Tusaale ahaan ether cellulose

Tusaalaha ether-ka cellulose waa unug polymer ah oo ka samaysan cellulose oo leh qaab-dhismeed eter ah.Giraan kasta oo gulukoos ah oo ku jira macromolecule cellulose wuxuu ka kooban yahay saddex kooxood oo hydroxyl, kooxda hydroxyl aasaasiga ah ee atamka lixaad ee karbon, iyo kooxda labaad ee hydroxyl ee atamka labaad iyo saddexaad.Haydaroojiinka ku jira kooxda hydroxyl waxaa lagu bedelay kooxda hydrocarbon si ay u sameeyaan cellulose.Waa sheyga beddelka hydroxyl hydrogen by kooxda hydrocarbon ee polymer cellulose.Cellulose waa iskudhis polyhydroxy polymer ah oo aan milmin mana dhalaalina.Cellulose waxaa lagu milmi karaa biyo, milo xalalka alkali iyo dareeraha organic ka dib etherification, oo uu leeyahay sifooyinka thermoplastic.

Cellulose ether waa ereyga guud ee taxane ah oo badeecado ah oo ay dhaliso falcelinta cellulose alkali iyo wakiilka etherifying ee xaaladaha qaarkood.Alkali cellulose waxaa lagu beddelaa wakiilada etherifying kala duwan si ay u helaan ethers cellulose kala duwan.

Sida laga soo xigtay sifooyinka ionization ee beddelka, tusaale ahaan ethers cellulose waxaa loo qaybin karaa ionic (sida karboxymethyl cellulose) iyo non-ionic (sida methyl cellulose) laba qaybood.

Marka loo eego nooca beddelka, tusaalaha ethers cellulose waxa loo qaybin karaa hal ether (sida methyl cellulose) iyo ether isku dhafan (sida hydroxypropyl methyl cellulose).Marka loo eego milanka, waxa loo qaybin karaa biyo milmay (sida hydroxyethyl cellulose) iyo milanka organic (sida ethyl cellulose).Hoobiyaha isku qasan ee qallalan ayaa inta badan isticmaala cellulose-biyoodka, kaas oo loo qaybin karo nooca degdega ah iyo nooca millatariga daahitaanka ka dib daaweynta dusha sare.

Isku-darka ayaa door muhiim ah ka ciyaara hagaajinta sifooyinka hoobiyeyaasha qallalan ee qallalan waxayna xisaabiyaan in ka badan 40% qiimaha alaabta ee hoobiyeyaasha qallalan ee qallalan.Qayb weyn oo ka mid ah isku-darka suuqa gudaha waxaa bixiya shirkado ajnabi ah, qiyaasta tixraaca ee alaabta waxaa sidoo kale bixiya alaab-qeybiyeyaal.Natiijo ahaan, qiimaha alaabada hoobiyeyaasha isku qasan ee qallalan ayaa weli ah mid sarreeya, wayna adagtahay in la faafiyo hoobiyeyaal dhoobo ah oo caan ah iyo malaastaan ​​oo leh tiro badan oo ballaaran.Badeecadaha suuqa ugu sarreeya waxaa gacanta ku haya shirkado shisheeye, soosaarayaasha hoobiyeyaasha qalalan faa'iido yar, qiimo jaban oo la awoodi karo;Codsiga isku-dhafka ayaa ka maqan cilmi-baaris nidaamsan oo la beegsanayo, si indho la'aan ah u raac hababka shisheeye.

Wakiilka biyaha haynta waa isku darka muhiimka ah si loo hagaajiyo waxqabadka haynta biyaha ee hoobiye isku qasan iyo sidoo kale mid ka mid ah isku darka muhiimka ah si loo go'aamiyo qiimaha alaabta ee hoobiye isku qasan qalalan.Shaqada ugu weyn ee ether cellulose waa in la ilaaliyo biyaha.

Habka ficilka ether cellulose ee hoobiye waa sida soo socota:

(1) hoobiye ee ether cellulose kala diri biyaha, sababtoo ah dusha doorka firfircoon si loo hubiyo in wax gelled wax ku ool ah qaybinta lebis ee nidaamka, iyo ether ether cellulose sida nooc ka mid ah kolloid ilaalinta, "xirmo" qayb adag, iyo dusha dibadda si ay u samee lakabka filimka saliidda, nidaamka qulqulka ayaa aad u xasilloon, sidoo kale wuxuu hagaajiyaa qulqulka habka isku dhafka ee dareeraha iyo dhismaha silbashada sidoo kale sidoo kale.

(2) Xalka ether Cellulose ay sabab u tahay sifooyinka qaab-dhismeedka kelli gaar ah, si biyaha ku jira ma fududa in ay lumin, iyo si tartiib tartiib ah sii daayay muddo dheer, siinta hoobiye haynta wanaagsan iyo workability.