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Lampiran 1. Alur penelitian
Kelompok I Pengukuran kekasaran permukaan awal dengan
profilometer
Sampel dikeluarkan, dicuci, dan dikeringkan di atas kertas tisu Pengukuran kekasaran permukaan dengan profilometer kemudian hasil di catat
Penanaman master castpada kuvet bawah Pemasangan spru
Kuvet atas dipasangkan di atas kuvet bawah dan dikunci hingga rapat
Pengangkatan master castdan pembuangan spru
Injeksi bahan nilon ke dalam mould Proses akhir / grinding
Sampel termoplastik nilon dengan ukuran 65mm x 10mm x 2,5mm
Cartridge berisi bahan nilon dimasukkan ke furnace selama 11 menit pada suhu 248,8 – 265,5oC Pengisian kuvet atas
Kelompok II Pengukuran kekasaran permukaan awal dengan
profilometer
Kelompok III Pengukuran kekasaran permukaan awal dengan
profilometer
Sampel direndam dalam larutan kopi robusta yang
sudah diukur pHnya dan disimpan dalam inkubator
dengan temperatur 37oC selama 1 hari.
Sampel direndam dalam larutan kopi robusta yang
sudah diukur pHnya dan disimpan dalam inkubator
dengan temperatur 37oC selama 2 hari.
Sampel direndam dalam larutan kopi robusta yang
sudah diukur pHnya dan disimpan dalam inkubator
dengan temperatur 37oC selama 3 hari.
Lampiran 2. Uji normalitas data kekasaran permukaan termoplastik nilon sebelum dan setelah perendaman dalam larutan kopi robusta
Tests of Normality
kelomp ok
Kolmogorov-Smirnova Shapiro-Wilk
Statistic df Sig. Statistic df Sig.
sebelum I .161 10 .200* .963 10 .814 II .193 10 .200* .887 10 .158 III .251 10 .075 .864 10 .085 sesudah I .230 10 .142 .905 10 .246 II .179 10 .200* .915 10 .319 III .216 10 .200* .868 10 .095
a. Lilliefors Significance Correction
Lampiran 3. Output uji Anova satu arah kekasaran permukaan permukaan termoplastiknilon setelah direndam dalam larutan kopi robusta
Descriptives
selisih
N Mean Std. Deviation Std. Error
95% Confidence Interval for Mean
Minimum Maximum
Lower Bound Upper Bound
I 10 .0030 .00483 .00153 -.0005 .0065 .00 .01
II 10 .0070 .00483 .00153 .0035 .0105 .00 .01
III 10 .0150 .00707 .00224 .0099 .0201 .01 .03
Total 30 .0083 .00747 .00136 .0055 .0111 .00 .03
Test of Homogeneity of Variances
selisih
Levene Statistic df1 df2 Sig.
1.855 2 27 .176
ANOVA
selisih
Sum of Squares df Mean Square F Sig.
Between Groups .001 2 .000 11.586 .000
Within Groups .001 27 .000
Post Hoc Tests Multiple Comparisons selisih LSD (I) kelompo k (J) kelompo k Mean Difference
(I-J) Std. Error Sig.
95% Confidence Interval
Lower Bound Upper Bound
I II -.00400 .00254 .127 -.0092 .0012 III -.01200* .00254 .000 -.0172 -.0068 II I .00400 .00254 .127 -.0012 .0092 III -.00800* .00254 .004 -.0132 -.0028 III I .01200* .00254 .000 .0068 .0172 II .00800* .00254 .004 .0028 .0132
Lampiran 4. Hasil pengukuran kekasaran permukaan termoplastik nilon Hasil pengukuran kekasaran permukaan termoplastik nilon setelah direndam dalam larutan kopi robusta selama 1 hari
Sebelum Perendaman Sesudah Perendaman
I II III Mean I II III Mean
0.33 0.34 0.32 0.33 0.33 0.32 0.34 0.33 0.31 0.33 0.32 0.32 0.31 0.33 0.32 0.32 0.34 0.35 0.36 0.35 0.37 0.35 0.34 0.35 0.34 0.36 0.38 0.36 0.36 0.36 0.36 0.36 0.33 0.31 0.30 0.31 0.31 0.33 0.31 0.32 0.33 0.35 0.34 0.34 0.35 0.35 0.33 0.34 0.33 0.32 0.34 0.33 0.34 0.32 0.32 0.33 0.33 0.31 0.31 0.32 0.33 0.32 0.34 0.33 0.35 0.34 0.37 0.35 0.36 0.35 0.34 0.35 0.36 0.38 0.37 0.37 0.38 0.38 0.36 0.37
Hasil pengukuran kekasaran permukaan termoplastik nilon setelah direndam dalam larutan kopi robusta selama 2 hari
Sebelum Perendaman Sesudah Perendaman
I II III Mean I II III Mean
0.31 0.31 0.32 0.31 0.32 0.31 0.31 0.31 0.31 0.31 0.31 0.31 0.33 0.31 0.32 0.32 0.35 0.33 0.34 0.34 0.37 0.35 0.34 0.35 0.34 0.34 0.36 0.35 0.38 0.36 0.34 0.36 0.34 0.36 0.39 0.36 0.37 0.37 0.37 0.37 0.34 0.34 0.34 0.34 0.35 0.35 0.33 0.34 0.36 0.34 0.34 0.35 0.36 0.36 0.36 0.36 0.33 0.31 0.32 0.32 0.32 0.34 0.33 0.33 0.36 0.38 0.34 0.36 0.36 0.38 0.38 0.37 0.31 0.33 0.31 0.32 0.31 0.31 0.33 0.32
Hasil pengukuran kekasaran permukaan termoplastik nilon setelah direndam dalam larutan kopi robusta selama 3 hari
Sebelum Perendaman Sesudah Perendaman
I II III Mean I II III Mean
0.34 0.35 0.33 0.34 0.39 0.36 0.34 0.36 0.36 0.38 0.38 0.37 0.38 0.38 0.38 0.38 0.32 0.31 0.33 0.32 0.34 0.32 0.32 0.33 0.37 0.37 0.37 0.37 0.38 0.39 0.37 0.38 0.31 0.33 0.31 0.32 0.32 0.34 0.33 0.33 0.31 0.31 0.31 0.31 0.32 0.34 0.32 0.33 0.34 0.34 0.34 0.34 0.36 0.38 0.37 0.37 0.30 0.31 0.33 0.31 0.31 0.33 0.32 0.32 0.39 0.36 0.34 0.36 0.37 0.36 0.38 0.37 0.31 0.33 0.31 0.32 0.35 0.34 0.33 0.34 Keterangan : I : Pengukuran pertama II : Pengukuran kedua III : Pengukuran ketiga