| dc.description.abstract | Hybrid biocomposite is the addition of two materials or more of different reinforcing
particles of the properties resulting in interaction as well as a more complex
reinforcement process both to the matrix and filler and one of the constituents made of
natural materials. Hybrid fillers used are zinc oxide (ZnO), a nanoparticle-sized,
environmentally friendly and readily synthesized and clay with strong, rigid, abundant
in nature, inexpensive and high in interconnecting particles into its structure. The aim of
this research is to know the potency of mango seed and filler of zinc oxide and clay
nanoparticles and glycerol concentration to mechanical properties (tensile strength and
elongation at break), physical properties (resistance to water and density), functional
groups (FTIR) and surface morphology (SEM). Biocomposite production refers to the
method of melt intercalation, which does not require the addition of solvent in the
manufacture of hybrid biocomposites. In this study used mango seed starch mass of 5
grams, with ZnO filler mass of 0; 1; 3; And 6% wt and clay of 0; 3; 6; And 9 wt%,
while mass of glycerol with variation 0; 20; 25; 30; And 35% wt. The heating
temperature of the biocomposite solution used was 80,53 0C. The resulting
biocomposites were analyzed for their physical and chemical properties, including
FTIR, SEM, RVA, tensile strength, elongation at break, water absorption, and density.
From result of FTIR analysis showed the expansion of OH group from 3599,17 cm-1 to
3645,46 cm-1. FTIR analysis result also shows the existence of new functional group
formed that is group C=C (aromatic ring). The SEM results show the biocomposite
morphology in which the hybrid filler is dispersed well enough that indirectly affects
the mechanical properties of the biocomposite. From manganese starch starch analys is,
starch content of starch 75,47%, amylopectin content 44,0%, amylose 14,82% and
water content 12,65%, gelatinization temperature 80,53 0C with peak viscosity 5303 cP
, And a breakdown viscosity of 1577 cP. In this study obtained biocomposite with the
best conditions on the use of ZnO 3% hybrid filler, 6% clay and 25% glycero l, with a
tensile strength of 6,053 MPa, percent extension at break off 58,148%, density 1,338 gr
/ cm3 and moisture absorption percentage 27,845 %. | en_US |
