Ma cellcrystalline cellulose (MCC) CAS 9004-34-6 Assay 97.0 ~ 102.0%

Ma cellulose a Microcrystalline
Ma cellulose [9004-34-6].
TANTHAUZO
Ma cellulose a Microcrystalline amayeretsedwa, opangidwa pang'ono ndi cellulose opangidwa ndi mankhwala a alpha cellulose, omwe amatengedwa ngati zamkati kuchokera ku mbewu za fibrous, ndi mchere acid.
CHIZINDIKIRO
• A. Ndondomeko
Iodinated zinc chloride solution: Sungunulani 20 g wa zinc chloride ndi 6.5 g wa potassium iodide mu 10.5 ml ya madzi.Onjezerani 0,5 g wa ayodini, ndikugwedezani kwa mphindi 15.
Chitsanzo: 10 mg
Kuwunika: Ikani Chitsanzo pa galasi la wotchi, ndi kumwaza mu 2 mL wa Iodinated zinc chloride solution.
Njira yovomerezera: Chinthucho chimatenga mtundu wabuluu wofiirira.
• B. Ndondomeko
Zitsanzo: 1.3 g ya Cellulose ya Microcrystalline, yolemera bwino mpaka 0.1 mg
Kusanthula: Tumizani Chitsanzo ku botolo la 125-mL.Onjezerani 25.0 ml ya madzi ndi 25.0 mL ya 1.0 M cupriethylenediamine hydroxide solution.Nthawi yomweyo tsukani yankho ndi nayitrogeni, ikani choyimitsira, ndikugwedezani pa chogwedeza dzanja, kapena shaker ina yoyenera, mpaka itasungunuka kwathunthu.Tumizani voliyumu yoyenera ya Sample solution ku nambala yovomerezeka 150 Cannon-Fenske, kapena yofanana, viscometer.Lolani yankho kuti lifanane ndi 25 ± 0.1 kwa NLT 5 min.Nthawi yothamanga pakati pa zizindikiro ziwiri pa viscometer, ndipo lembani nthawi yothamanga, t1, mu s.
Werengerani viscosity ya kinematic, (KV)1, ya Microcrystalline Cellulose yotengedwa:
Zotsatira= t1 × k1
t1= nthawi yoyenda (s)
k1= viscometer yosasintha (onani Viscosity 911)
Pezani nthawi yothamanga, t2, ya 0.5 M cupriethylenediamine hydroxide solutions pogwiritsa ntchito nambala 100 Cannon-Fenske, kapena zofanana, viscometer.
Werengerani viscosity ya kinematic, (KV)2, ya zosungunulira:
Zotsatira= t2 × k2
t2= nthawi yoyenda ya 0.5 M cupriethylenediamine hydroxide solutions (s)
k2 = viscometer yosasintha
Dziwani makulidwe achibale, rel, a Microcrystalline Cellulose chitsanzo chotengedwa:
Zotsatira= (KV)1/(KV)2
(KV)1= kinematic viscosity ya Microcrystalline Cellulose yotengedwa
(KV)2=kinematic viscosity ya zosungunulira
Dziwani makulidwe amkati, [] c, mwa kutanthauzira, pogwiritsa ntchito Intrinsic Viscosity Table mu gawo la Reference Tables.
Kuwerengera kuchuluka kwa polymerization, P:
Zotsatira= (95) × [η]c/WS × [(100 %LOD)/100]
[η]c= kukhuthala kwamkati
WS= kulemera kwa cellulose ya Microcrystalline yotengedwa (g)
%LOD=mtengo wopezeka pa mayeso a Kutaya pa Kuyanika
Njira zovomerezera: Mlingo wa polymerization siwopitilira 350.
ZOCHITSA
Zowonongeka Zachilengedwe
• Zotsalira pa Ignition 281: NMT 0.1%
• Zitsulo Zolemera, Njira II 231: NMT 10 ppm
MAYESO AKE
• Mayeso a Microbial Enumeration 61 ndi Mayesero a Tizilombo Zodziwika 62: Chiwerengero chonse cha aerobic microbial sichidutsa 1000 cfu / g, ndipo kuchuluka kwa nkhungu ndi yisiti sikudutsa 100 cfu / g.Imakwaniritsa zofunikira pakuyesa kwa Staphylococcus aureus ndi Pseudomonas aeruginosa komanso kusakhalapo kwa mitundu ya Escherichia coli ndi Salmonella.
• Kuwongolera
Chitsanzo: 5 g
Kusanthula: Gwirani Chitsanzo ndi 40 ml ya madzi kwa mphindi 20, ndi centrifuge.Sungani supernatant kuti mugwiritse ntchito pakuyezetsa pH.Pogwiritsa ntchito mita ya conductivity yoyenera yomwe yakhazikitsidwa ndi potaziyamu chloride conductivity calibration standard yokhala ndi conductivity ya 100 µS/cm, yesani ma conductivity a supernatant pambuyo powerenga mokhazikika, ndikuyesa ma conductivity amadzi omwe amagwiritsidwa ntchito pokonzekera mayeso. chitsanzo.
Njira zolandirira: Mayendetsedwe a mphamvu yamphamvu sapitilira machulukidwe amadzi opitilira 75 µS/cm.
• pH 791: 5.0-7.5 mu supernatant yopezedwa mu mayeso a Conductivity
• Kutaya pakuyanika 731: Yanikani chitsanzo pa 105 kwa 3 h: imataya NMT 7.0% ya kulemera kwake, kapena maperesenti ena otsikirapo, kapena ili mkati mwa kuchulukana, monga momwe zafotokozedwera polembapo.
• Kuchulukana Kwambiri
Kusanthula: Gwiritsani ntchito voliyumu yomwe yayikidwa ndi skrini ya 10-mesh.Voliyumuyo ndi yomasuka ya kapu yamkuwa kapena chitsulo chosapanga dzimbiri, yomwe imawerengedwa kuti imatha 25.0 ± 0.05 mL ndipo mkati mwake imakhala ndi 30.0 ± 2.0 mm.Yezerani chikho chopanda kanthu, chiyikeni pansi pa chute, ndipo pang'onopang'ono tsanulirani ufa kuchokera kutalika kwa 5.1 masentimita (2 mu) pamwamba pa funnel kupyolera mu volumeter, pa mlingo woyenera kuti musatseke, mpaka chikho chisefukire.[Zindikirani-Ngati chotchinga chitsekeka kwambiri, chotsani chophimba.] Yesani ufa wochuluka, ndipo yesani chikho chodzazidwa.Werezerani kuchuluka kwake pogawa kulemera kwa ufa mu kapu ndi kuchuluka kwa kapu.
Njira zolandirira: Kuchulukirachulukira kuli mkati mwazomwe zalembedwa.
• Kugawa kwa Tinthu tating'ono
[Zindikirani-Panthawi yomwe palibe nkhawa zokhudzana ndi magwiridwe antchito okhudzana ndi kukula kwa tinthu tating'onoting'ono, mayesowa atha kusiyidwa.]
Kumene zolembazo zimanena za kugawidwa kwa tinthu, dziwani kukula kwa tinthu monga momwe tafotokozera mu Particle Size Distribution Estimation by Analytical Sieving 786, kapena ndi ndondomeko yoyenera yovomerezeka.
• Zinthu zosungunuka m'madzi
Chitsanzo: 5.0 g
Kusanthula: Gwirani Chitsanzo ndi 80 mL ya madzi kwa mphindi 10, ndikudutsani mothandizidwa ndi chofufumitsa kupyolera mu pepala la fyuluta (Whatman No. 42 kapena yofanana) mu botolo la vacuum.Tumizani fyuluta ku beaker ya tared, sungunuke mpaka kuuma popanda kutenthedwa, zouma pa 105 kwa 1 h, kuziziritsa mu desiccator, ndi kulemera.
Njira zovomerezeka: Kusiyana pakati pa kulemera kwa zotsalira ndi kulemera komwe kumachokera ku chidziwitso chopanda kanthu sikudutsa 12.5 mg (0.25%).
• Zinthu Zosungunuka za Etha
Chitsanzo: 10.0 g
Kusanthula: Ikani Chitsanzo mu ndime ya chromatographic yokhala ndi m'mimba mwake pafupifupi mamilimita 20, ndikudutsa 50 ml ya etha wopanda peroxide pagawo.Sunthani nthunzi kuti iume m'mbale yowuma kale komanso yophweteka mothandizidwa ndi kamphepo kayekha mu ng'anjo ya fume.Ether yonse ikasungunuka, pukutani zotsalira pa 105 kwa mphindi 30, kuziziritsa mu desiccator, ndikulemera.
Njira zovomerezeka: Kusiyana pakati pa kulemera kwa zotsalira ndi kulemera komwe kumachokera ku chidziwitso chopanda kanthu sikudutsa 5.0 mg (0.05%).
ZOWONJEZERA ZOFUNIKA
• Kupaka ndi Kusunga: Sungani m’zotengera zothina.
• Kulemba: Kulembako kumasonyeza kutayika mwadzina pa kuyanika, kachulukidwe, ndi kuchuluka kwa ma polymerization.Mlingo wa polymerization kutsatiridwa anatsimikiza ntchito Chizindikiritso mayeso B. Pamene tinthu kukula kugawa ananena mu kulemba, chitani monga ananenera mu mayeso kwa Particle Kukula Distribution.Kulembako kumasonyeza njira yomwe kugawa kukula kwa tinthu kunadziwikiratu ngati njira ina yosiyana ndi sieving inagwiritsidwa ntchito;ndipo zolembedwazo zikuwonetsa milingo ya d10, d50, ndi d90 ndi kuchuluka kwa chilichonse.