Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Jurnal Kimia Terapan Indonesia
Aloma Karo Karo
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
STUDI PERANAN ANTI ULTRAVIOLET PADA KOMPOSIT BERBAS1S POLIMER LDPE DAN EVA SEBAGAI PLASTIK PERTANIAN. Sudirman D; Aloma Karo Karo; Teguh Yulius; Anik S; Isni M
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Vol 4, No 3 (2003): Agustus Edisi Khusus 3 2003
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jstni.2003.4.3.1711

Abstract

STUDI PERANAN ANTI ULTRAVIOLET PADA KOMPOSIT BERBASIS POLIMER LDPE DAN EVA SEBAGAI PLASTIK PERTANIAN. Penambahan anti ultraviolet berupa chimmasorb dan tinuvin kedalam pembuatan komposit berbasis polimer LDPE (low density polyethylene) atau EVA (ethyl vinyl accetal) sebagai plastik pertanian telah dilakukan. Dalam proses pembuatan dilakukan dengan metode blending dengan cara melakukan pencampuran polimer LDPE atau EVA pada suhu 180oC selama 7 menit di dalam laboplastomil dengan penambahan chimmasorb atau linuvin dengan komposisi 5%, 8%, 11% dan 14 % berat. Selanjutnya dilakukan penjemuran selama 60 hari dan karakterisasi meliputi sifat mekanik dan struktur mikro sebelum dan sesudah penjemuran. Matriks komposit berupa LDPE lebih tahan terhadap ultraviolet dari pada EVA. Komposisi anti ultraviolet terbaik adalah yang mengnadung 11% berat chimmasorb lebih baik dan pada sampel dengan aditif tinuvin. Akibat penjemuran sampai 60 hari ternyata sifat mekanik komposit berbasis LDPE dan EVA mengalami penurunan. Kekuatan tank menurun sebesar 0,07% dan 2398%, kekuatan luluh menurun sebesar 3,08% dan 3,9% dan perpanjangan putus masing-masing sebesar 17,08% dan 13,95%.  
Synthesis of Nanofiber from Polyvinyl Alcohol (PVA)-Collagen Using Electrospinning Methods Sudirman Sudirman; Aloma Karo Karo; Sulistiyoso Giat Sukaryo; Karina Dwi Adistiana; Kiagus Dahlan
Jurnal Kimia Terapan Indonesia Vol 21, No 2 (2020)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jkti.v21i2.428

Abstract

Polyvinil alcohol (PVA) polymer can be used as matrix to be mixed with collagen in the subtance of primary wound dressing material to cover wound that prevents growth of bacteria and enhanced tissue formation. Collagen fiber is fragile, so important to combined with PVA to obtain better mechanical properties. The PVA-collagen fibers are prepared in aqueous solutions with PVA (10%) and collagen concentration (1% and 2%) using electrospinning method and the effect of voltage 15 kV, 19 kV, and 23 kV. Analysis of functional groups show that the presence of identical compounds produced and new functional groups are not formed. SEM data show that the effect of variation of voltage and collagen concentration on the resulting morphology of fiber. PVA-collagen 2% fibers produce continuous fibers, has a diameter 284-426 nm, thickness 0.0324-0.0483 mm and has a high percent of elongation so it can be used as a wound dressing material.
Co-Authors Anik S Isni M Karina Dwi Adistiana Kiagus Dahlan Sudirman D Sudirman Sudirman Sulistiyoso Giat Sukaryo Teguh Yulius