Lampiran 3. Penentuan Sifat Mekanik Produk Lateks Karet Alam 3.1 Kekuatan Tarik
Komposisi Nanokomposit Load
Kgfmm
2
Width mm
Thick mm
Kekuatan Tarik
MPa
Lateks Pekat 0,24
6 0,48
0,817 Lateks Pekat + 0,6 phr NKS
0,42 6
0,48 1,430
Lateks Pekat + 1,2 phr NKS 1,13
6 0,49
3,771 Lateks Pekat + 1,8 phr NKS
0,68 6
0,48 2,316
Lateks Pekat + 2,4 phr NKS 0,47
6 0,48
1,601 Lateks Pekat + 3,0 phr NKS
0,44 6
0,48 1,499
Rumus Kekuatan tarik MPa :
σ
t=
F
maks
A
3.2. Regangan
Komposisi Nanokomposit Extenssion
mm Gauge
mm Regangan
Lateks Pekat 147,365
70 210,52
Lateks Pekat + 0,6 phr NKS 616,331
70 880,47
Lateks Pekat + 1,2 phr NKS 614,173
70 877,33
Lateks Pekat + 1,8 phr NKS 600,322
75 800,43
Lateks Pekat + 2,4 phr NKS 400,365
70 571,95
Lateks Pekat + 3,0 phr NKS 375,076
70 535,82
Rumus Regangan :
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ε
=
Extension Gauge
x 100
3.3. Modulus Young’s Komposisi Nanokomposit
Tegangan MPa
Regangan Modulus
Young’s MPa
Lateks Pekat 0,817
210 0,388
Lateks Pekat + 0,6 phr NKS 1,430
880 0,162
Lateks Pekat + 1,2 phr NKS 3,771
877 0,430
Lateks Pekat + 1,8 phr NKS 2,316
800 0,289
Lateks Pekat + 2,4 phr NKS 1,601
572 0,273
Lateks Pekat + 3,0 phr NKS 1,499
536 0,280
Rumus Modulus Young’s MPa :
E
=
σ ϵ
x 100
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Lampiran 4. Analisa Morfologi Produk Lateks Karet Alam dengan Penambahan 1,2 phr NKS dengan SEM
Lampiran 5. Analisa Morfologi Produk Lateks Karet Alam Tanpa Pengisi dengan SEM
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Lampiran 6. Spektrum FTIR dari α-Selulosa
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Lampiran 7. Spektrum FTIR dari NKS
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Lampiran 8 . Tabel Spesifikasi Mutu Lateks Pekat
No Parameter
ASTM D 1076
ISO 2004
HA LA
HA LA
1 Kandungan padatan total
TSC min 61,5
61,5 61,5
61,5
2 Kandungan karet kering
60 60
60 60
3 Kandungan bukan karet
2,0 2,0
2,0 2,0
4 Kadar ammonia
1,6 1,0
1,0 0,8
5 Waktu ketetapan mekanik
MST min detik 650
650 650
650
6 Koagulasi maks
0,08 0,08
0,08 0,08
7 Bilangan KOH
0,8 0,8
1,0 1,0
8 Asam lemak eteris
- -
0,2 0,2
9 Tembaga maks ppm
8 8
8 8
10 Mangan maks ppm
8 8
8 8
11 Kandungan sludge maks
0,1 0,1
0,1 0,1
Sumber : ASTM D 1076 dan ISO 2004
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BAB 3
METODE PENELITIAN
3.1Alat-Alat Penelitian
Alat-alat yang digunakan pada penelitian ini adalah :
Nama Alat Merek
Beaker Glass Pyrex
Erlenmeyar Pyrex
Gelas Ukur Pyrex
Labu Takar Pyrex
Kaca Arloji Termometer
Fisher Hot Plate
Cimarec Oven
Carbolite Plat pencetak
Membran dialysis Indikator Universal
Desikator Sentrifugasi
Himachi Seperangkat alat TEM
JSM-35 Sumandju Seperangkat alat uji tarik
GOTECH AL 7000 M Seperangkat alat FT-IR
Shimadzu
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3.2Bahan Penelitian
Bahan-bahan yang digunakan pada penelitian ini adalah :
Bahan Merek
Tandan kosong sawit HNO
3
3,5 Merck
NaNO
2
Merck NaOH 2
Merck NaSO
3
2 Merck
NaOCl 1,75 Merck
NaOH 17,5 Merck
H
2
O
2
10 Merck
H
2
SO
4
48,84 Merck
Membran dialisis SpectraPor
Lateks pekat HA 60 KOH 10
CaNO
3 2
Metanol p.a
Sulfur 55 Wingstay 55
Occtocure 55 CHCl
3
p.a CaCO
3
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3.3 Prosedur Kerja 3.3.1 Pembuatan Reagen
