Sakamakon gwajin Cellulose ether

Ta hanyar bincike da taƙaita sakamakon gwajin cellulose ether a cikin surori uku, manyan sakamakon sune kamar haka:

5.1 Kammalawa

1. Cellulose ether cirewa daga albarkatun ƙasa na shuka

(1) An auna sassan albarkatun ƙasa guda biyar (danshi, toka, ingancin itace, cellulose da hemicellulose), kuma an zaɓi kayan shuka guda uku masu wakiltarsu, sawdust ɗin pine da bambaro na alkama.

da kuma bagasse don cire cellulose, kuma an inganta tsarin cire cellulose. A ƙarƙashin yanayin aiki mai kyau,

Tsarkakakkiyar lignocellulose, cellulose na alkama da kuma bagasse cellulose duk sun wuce kashi 90%, kuma yawan amfanin su ya wuce kashi 40%.

(2) Daga nazarin bakan infrared, za a iya gani cewa bayan magani, kayayyakin cellulose da aka ciro daga bambaro na alkama, bagasse da itacen pine

A tsayin 1510 cm-1 (girgizar kwarangwal na zoben benzene) da kuma kusan 1730 cm-1 (miƙa girgiza na carbonyl C=O mara haɗin gwiwa)

Babu kololuwa, wanda ke nuna cewa an cire lignin da hemicellulose a cikin samfurin da aka cire, kuma cellulose da aka samu yana da tsarki sosai.

Ana iya gani daga siginar sha ta waje cewa abun da ke cikin lignin yana raguwa akai-akai bayan kowane mataki na magani, kuma shaƙar UV na cellulose da aka samu yana raguwa.

Layin spectral da aka samu ya kusa da lanƙwasa na spectral na sha ultraviolet na blank potassium permanganate, wanda ke nuna cewa cellulose da aka samu yana da tsabta. ta hanyar X

Binciken bambancin hasken X-ray ya nuna cewa an inganta yanayin lu'ulu'u na cellulose samfurin da aka samu sosai.

2. Shirye-shiryen cellulose ethers

(1) An yi amfani da gwajin abu ɗaya don inganta tsarin maganin alkali mai ƙarfi na pine cellulose kafin a fara amfani da shi;

An gudanar da gwaje-gwajen orthogonal da gwaje-gwajen abubuwa guda ɗaya kan shirya CMC, HEC da HECMC daga pine wood alkali cellulose, bi da bi.

Ingantawa. A ƙarƙashin mafi kyawun tsarin shiri, an sami CMC tare da DS har zuwa 1.237, HEC tare da MS har zuwa 1.657.

da kuma HECMC tare da DS na 0.869. (2) Dangane da binciken FTIR, idan aka kwatanta da ainihin cellulose na itacen Pine, an saka carboxymethyl cikin cellulose ether CMC cikin nasara.

A cikin cellulose ether HEC, an haɗa ƙungiyar hydroxyethyl cikin nasara; a cikin cellulose ether HECMC, an haɗa ƙungiyar hydroxyethyl cikin nasara

Rukunin Carboxymethyl da hydroxyethyl.

(3) Ana iya samunsa daga nazarin H-NMR cewa an shigar da rukunin hydroxyethyl cikin samfurin HEC, kuma ana samun HEC ta hanyar lissafi mai sauƙi.

matakin maye gurbin.

(4) Dangane da binciken XRD, idan aka kwatanta da ainihin cellulose na itacen Pine, ƙwayoyin cellulose ethers CMC, HEC da HEECMC suna da

Siffofin lu'ulu'u duk sun canza zuwa nau'in cellulose na II, kuma lu'ulu'u ya ragu sosai.

3. Amfani da man shafawa na cellulose ether

(1) Abubuwan asali na manna na asali: SA, CMC, HEC da HECMC duk ruwa ne na roba, kuma

Tsarin da ke tattare da ƙwayoyin cellulose guda uku ya fi na SA kyau, kuma idan aka kwatanta da SA, yana da ƙarancin ƙimar PVI, wanda ya fi dacewa da buga kyawawan alamu.

Fure; tsarin yadda manna ke samar da manna guda huɗu shine: SA > CMC > HECMC > HEC; ƙarfin riƙe ruwa na manna na asali na CMC,

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Dacewar urea da gishirin hana tabo S yayi kama da SA, kuma daidaiton ajiya na manna na asali na CMC ya fi SA kyau, amma

Dacewar man shafawa na HEC ya fi muni fiye da na SA;

Daidaito da kwanciyar hankali na sodium bicarbonate sun fi SA muni;

SA iri ɗaya ce, amma ƙarfin riƙe ruwa, dacewa da sodium bicarbonate da kwanciyar hankali na manna mai ƙarancin HEECMC sun yi ƙasa da SA. (2) Aikin bugawa na manna: Yawan launin da CMC ke nunawa da kuma ƙarfinsa, jin bugawa, saurin launi na bugawa, da sauransu duk suna kama da SA.

kuma ƙimar depaste na CMC ya fi na SA kyau; ƙimar depaste da jin bugawa na HEC sun yi kama da SA, amma bayyanar HEC ya fi ta SA kyau.

Girman launi, ƙarfinsa da kuma saurin launi zuwa gogewa sun yi ƙasa da SA; Jin bugun HECMC, saurin launi zuwa gogewa sun yi kama da SA;

Matsakaicin manna ya fi SA girma, amma yawan launin da aka gani da kuma kwanciyar hankali na ajiya na HECMC sun yi ƙasa da SA.

5.2 Shawarwari

Daga tasirin aikace-aikacen na 5.1 cellulose ether manna za a iya samu, ana iya amfani da manna cellulose ether a cikin aiki

Manna na buga rini, musamman ma'adinan anionic cellulose ethers. Saboda gabatar da ƙungiyar hydrophilic carboxymethyl, mai membobi shida

Reactivity na babban rukunin hydroxyl akan zobe, da kuma cajin mara kyau bayan ionization a lokaci guda, na iya haɓaka rini na zare tare da rini mai amsawa. Duk da haka, gabaɗaya,

Tasirin amfani da manna ether na cellulose ba shi da kyau sosai, galibi saboda matakin maye gurbin ko maye gurbin cellulose ether na molar.

Saboda ƙarancin matakin maye gurbin, shirya ƙwayoyin cellulose masu babban matakin maye gurbin ko babban matakin maye gurbin molar yana buƙatar ƙarin nazari.