@thesis{thesis,
		author={RASUM  RASUM},
		title ={PENGARUH VARIASI WAKTU PERENDAMAN SERAT 
DAUN NANAS MENGGUNAKAN ALKALI KOMPOSIT 
BERMATRIKS EPOXY TERHADAP KEKUATAN IMPAK 
DAN PENGUJIAN SEM},
		year={2020},
		url={http://eprints.stta.ac.id/1903/},
		abstract={Natural fiber composites start to get serious attention from composite 
material researchers. Besides having high specific strengths and having low 
specific gravity, natural fibers are easier to obtain. This study aimed to investigate
the impact strength obtained on the composite fiber of pineapple leaves immersed
with a concentration of 15 % NaOH solution.
The main material used was pineapple leaves fiber and the matrix used was 
epoxy resin. The method of manufacture was Hand lay up. The immersion of the 
fiber used 15 % concentration of NaOH solution for 30, 60, 90, 120 minutes and 
the test method used was the impact test (ASTM D 256-03). The impact test aimed
to measure how much energy a material could absorb until the material breaks.
The lowest impact test result was aimed at 30 minutes of immersion, namely 
0,005 J/mm². While the highest impact strength occurred at 90 minutes of 
immersion which was 0,009 J/mm². Pineapple leaves fiber composite SEM test 
results showed broken dominated by the number of pull out and void fibers}
		}