PENGARUH VARIASI BIOKOMPOSIT [SUSPENSI CaCO3 : BIOPLASTIK (CORN STARCH)] TERHADAP NILAI PENYUSUTAN (SHRINKAGE), KUAT TARIK (TENSILE STRENGTH), KUAT LENTUR (FLEXURAL STRENGTH), DAN MIKROSTRUKTUR

YULIANA, MARGARETHA TRI BUDI (2022) PENGARUH VARIASI BIOKOMPOSIT [SUSPENSI CaCO3 : BIOPLASTIK (CORN STARCH)] TERHADAP NILAI PENYUSUTAN (SHRINKAGE), KUAT TARIK (TENSILE STRENGTH), KUAT LENTUR (FLEXURAL STRENGTH), DAN MIKROSTRUKTUR. Other thesis, UPN 'Veteran" Yogyakarta.

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Abstract

v
ABSTRAK
Batu kapur merupakan salah satu potensi batuan yang banyak terdapat di
Indonesia. Batu kapur dapat dimanfaat dalam dunia kesehatan yaitu sebagai
biomaterial untuk pembuatan implantasi tulang. Salah satu biomaterial buatan yang
digunakan dalam teknologi implantasi tulang adalah biokomposit. Sebelum
pengaplikasian biokomposit dalam teknologi implantasi tulang harus mengetahui
komposisi yang tepat antara bioplastik dan biokeramik supaya implant tulang
memiliki sifat mekanik yang baik, oleh karena itu dilakukan beberapa pengujian
seperti shrinkage, tensile test, flexural test, dan SEM-EDX guna mengetahui
mikrostruktur dan unsur yang terkandung dalam biokomposit. Dalam penelitian ini
menggunakan 4 variasi perbandingan suspensi CaCO3 : bioplastik (Corn Starch)
yaitu 20:80 (w/w)%, 30:70 (w/w)%, 40:60 (w/w)%, 50:50 (w/w)%. Dimensi
spesimen tensile test sesuai dengan standar ASTM D638 tipe 4, dan untuk dimensi
spesimen flexural test sesuai dengan standar ASTM D790. Sampel diberikan kode
seperti kode spesimen A untuk komposisi 20:80 (w/w)%, kode spesimen B untuk
komposisi 30:70 (w/w)%, kode spesimen C untuk komposisi 40:60 (w/w)%, dan
kode spesimen D untuk komposisi 50:50 (w/w)%. Berdasarkan hasil dari
pengukuran shrinkage menunjukkan bahwa spesimen B memiliki nilai rerata
shrinkage tertinggi yaitu sebesar 18±0,011% untuk spesimen tensile test, dan
16±0,022% untuk spesimen flexural test. Hasil dari tensile test dan flexural test
juga menunjukkan bahwa spesimen B memiliki nilai rerata tertinggi yaitu ultimate
tensile strength sebesar 0,11±0,015 MPa dan flexural strength sebesar 0,02±0,012
MPa. Sedangkan dari pengujian mikrostruktur yaitu SEM-EDX didapatkan hasil
berupa morfologi spesimen berbentuk spheroid dan unsur dominan yang
terkandung dalam spesimen yaitu C sebesar 35,38 % berat, N sebesar 11,74% berat,
O sebesar 50,13 % berat, dan Ca sebesar 2,74 % berat.
Kata kunci : Biomaterial, Biokomposit, Komposisi, CaCO3, Corn Starch.
vi
ABSTRACT
Limestone is one of the many potential rocks found in Indonesia. Limestone
can be used in the world of health, namely as a biomaterial for the manufacture of
bone implants. One of the artificial biomaterials used in bone implantation
technology is biocomposite. Prior to the application of biocomposites in bone
implantation technology, it is necessary to know the correct composition between
bioplastics and bioceramics so that bone implants have good mechanical
properties, therefore several tests were carried out such as shrinkage, tensile tests,
flexural tests, and SEM-EDX to determine the microstructure and elements
involved. contained in the biocomposite. In this study using 4 variations of the ratio
of suspense CaCO3: bioplastic (corn starch), namely 20:80 (w/w)%, 30:70 (w/w)%,
40:60 (w/w)%, 50:50 (w/w)% . The dimensions of the tensile test specimen are in
accordance with the ASTM D638 type 4 standard, and the dimensions of the flexural
test specimen are in accordance with the ASTM D790 standard. Samples are given
codes such as specimen A code for composition 20:80 (w/w)%, specimen B code
for composition 30:70 (w/w)%, specimen C code for composition 40:60 (w/w)%,
and specimen code D for composition 50:50 (w/w)%. Based on the results of the
shrinkage measurement, it showed that specimen B had the highest average
shrinkage value of 18±0.011% for the tensile test specimen, and 16±0.022% for the
flexural test specimen. The results of the tensile test and flexural test also showed
that specimen B had the highest average value, namely the ultimate tensile strength
of 0.11±0.015 Mpa and flexural strength of 0.02±0.012 Mpa. Meanwhile, from the
microstructure test, namely SEM-EDX, the results were in the form of a spheroid�shaped specimen morphology and the dominant elements contained in the specimen
were C by 35.38% by weight, N by 11.74% by weight, O by 50.13% by weight, and
Ca by 2.74% by weight.
Keywords : Biomaterial, Biocomposite, Composition, CaCO3, Corn Starch.

Item Type: Thesis (Other)
Uncontrolled Keywords: Biomaterial, Biokomposit, Komposisi, CaCO3, Corn Starch.
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Eko Yuli
Date Deposited: 28 Jul 2022 02:22
Last Modified: 28 Jul 2022 02:22
URI: http://eprints.upnyk.ac.id/id/eprint/30469

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