
Pembuatan Polimer dari Cellulose Viscose
Quiz
•
Instructional Technology
•
University
•
Practice Problem
•
Easy
Azka Aman
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Proses pembuatan staple fiber rayon dimulai dari, kecuali
pulpen
proses caustic disolver dan Alkalisasi
pemerasan, pemeraman, xanthasi
pelarutan viscose, penyaringan,deaerasi & pematangan
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Caustic Dissolver Section
Proces persiapan dimulai dari, kecuali:
penyiapan larutan Caustic soda NaOH 25 % disebut Strong Lye
, NaOH 18 % disebut Steplye
NaOH 9 % disebut MixerLye
NaOH 15 % Dissolver Lye
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Proses persiapan pembuatan bubur pulp/ slurry, kecuali:
Menyiapkan pulp yang akan dimasukkan ke slurry mixer
Komposisi pulp hard wood dan soft wood sesuai dengan yang diinginkan yaitu 89 ; 11
•Mengatur suhu/ temperatur step lye 150°-152°C.
•Menyiapkan caustic/ step lye 220 g/l atau 18 %.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Slurry press berfungsi untuk, kecuali:
mengurangi kandungan NaOH
dapat kan hasil akhir kandungan alkali 15.70%
kandungan selulosa 33.60 %
steplye yang ada dalam alkali selulosa melalui proses pressing, bertambah
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Luaran Slurry Press, kecuali:
•Alkcell yang keluar dari press roller masih berupa mat alkcell setebal + 2 cm.
menghasilkan serbuk alkali cellulose menyerupai kelapa parut,
•Alkali Cellulose mempunyai komposisi sebagai berikut,
Cellulosa :33.5 %
NaOH masih ada 18 %
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Proses Maturing / Pematangan dalam Drum, kecuali:
Alkali Cellulose yang telah dicabik –cabik di slurry press kemudian masuk ke maturing drum
diputar satu arah dengan kecepatan 1.67putaran/menit
alkali celulosa didalam drum bergerak mundur
posisi drum sedikit miring kedepan 5-8º
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Proses Alkali selulosa dari silo dimasukkan ke dalam xantathor kecuali:
Xantathor beroperasi pada tekanan 25 mmHg atau -0.83 bar
temperatur 31oC
alkali selulosa direaksikan dengan karbon bisulfida selama 45 menit
Dalam xantathor dilakukan pengadukan secara acak
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