This paper highlights the comparison of acoustical properties of seashell and natural fiber based reinforced polymer (SRP and NRP). Based on previous studies, the best seashell for acoustics is Placuna placenta Linn, the best natural fiber is coconut fiber and an additional water hyacinth fiber as comparative material. The seashell, coco-husk and water hyacinth fiber were ground and of 0.2 mm diameter was filtered then composted with polyester and methyl ethyl ketone peroxide. The composition of polyester, fiber and catalyst is 200 ml, 25 grams, and 20 ml respectively. Square trays were used to form flat FRP panels which were dried with normal air temperatures. The ASTM E-1050-98 on B&K 4206 standard was implemented on observation connected to B&K Pulse LAN-XI. Meanwhile, a statistical comparative method was used to analyze the results. It identified that the average absorption coefficient of SFRP (PP30) is relatively higher than others at 0.2035 based on the comparative statistics, while the Sound Transmission Loss of the SFRP of WH15 is the highest of all samples (58.3594 dB). This research is beneficial for the innovation of acoustic material for interior design and architecture.

Topics
Acoustical properties, Architectural acoustics, Acoustic signal processing, Thermal instruments, Natural materials, Polymers, Optical absorption, Catalysts and Catalysis
1.
E.
 
Setyowati
,
A.
 
Satyapratama
,
S. T.
 
Atmadja
, and
G.
 
Hardiman
, “
Manufacture of Acoustical One Side-Waffle Panel Made of Natural Resources with Hydraulic Hot Press Machine
,”
J. Teknol.
, vol.
78
, no.
5
, pp.
289
–
293
,
2014
.
Google Scholar
 
2.
E.
 
Setyowati
 and
E. E.
 
Pandelaki
, “
The concept of sustainable prefab modular housing made of natural fiber reinforced polymer (NFRP)
,”
IOP Conf. Ser. Mater. Sci. Eng.
, Vol.
316
, no.
1
,
2018
.
Google Scholar
 
3.
E.
 
Setyowati
,
I.
 
Yahya
,
E.
 
Supriyo
,
I. C.
 
Romadhona
, and
A.
 
Minardi
, “
On the sound absorption improvement of water hyacinth and coconut husk based fiber reinforced polymer panel
,”
MATEC Web Conf.
, Vol.
159
,
2018
.
https://doi.org/10.1051/matecconf/201815902035
Google Scholar
 
4.
F. C.
 
Lee
 and
W. H.
 
Chen
, “
Acoustic Transmission Analysis of Multi-Layer Absorbers
,”
J. Sound Vib.
, vol.
248
, no.
4
, pp.
621
–
634
,
2001
.
https://doi.org/10.1006/jsvi.2001.3825
Google Scholar
Crossref
Search ADS
 
5.
T.
 
Bravo
,
C.
 
Maury
, and
C.
 
Pinhède
, “
Absorption and transmission of boundary layer noise through flexible multi-layer micro-perforated structures
,”
J. Sound Vib.
, vol.
395
, pp.
201
–
223
,
2017
.
https://doi.org/10.1016/j.jsv.2017.02.018
Google Scholar
Crossref
Search ADS
 
6.
Y.
 
Takahashi
,
T.
 
Otsuru
, and
R.
 
Tomiku
, “
In situ measurements of surface impedance and absorption coefficients of porous materials using two microphones and ambient noise
,”
Appl. Acoust.
, vol.
66
, no.
7
, pp.
845
–
865
,
2005
.
https://doi.org/10.1016/j.apacoust.2004.11.004
Google Scholar
Crossref
Search ADS
 
7.
A. A.
 
Odusanya
,
B.
 
Bolasodun
, and
C. I.
 
Madueke
, “
Property Evaluation of Sea shell Filler Reinforced Unsaturated Polyester Composite
,”
Int. J. Sci. Eng. Res.
, vol.
5
, no.
11
, pp.
1343
–
1349
,
2014
.
Google Scholar
 
8.
V.
 
Fombuena
,
L.
 
Bernardi
,
O.
 
Fenollar
,
T.
 
Boronat
, and
R.
 
Balart
, “
Characterization of green composites from biobased epoxy matrices and bio-fillers derived from seashell wastes
,”
J. Mater.
, Vol.
57
, pp.
168
–
174
,
2014
.
https://doi.org/10.1016/j.matdes.2013.12.032
Google Scholar
Crossref
Search ADS
 
9.
L. B.
 
Teixeira
,
V. K.
 
Fernandes
,
B. G. O.
 
Maia
,
S.
 
Arcaro
, and
A. P. N.
 
de Oliveira
, “
Vitrocrystalline foams produced from glass and oyster shell wastes
,”
Ceram. Int.
, vol.
43
, no.
9
, pp.
6730
–
6737
,
2017
.
https://doi.org/10.1016/j.ceramint.2017.02.078
Google Scholar
Crossref
Search ADS
 
10.
L.
 
Li
,
Z.
 
Zeng
,
Z.
 
Wang
,
Z.
 
Peng
,
X.
 
She
, and
S.
 
Li
, “
Effect of Oyster Shell Powder Loading on the Mechanical and Thermal Properties of Natural Rubber / Oyster Shell Composites,”
vol.
25
, no.
1
, pp.
17
–
22
,
2017
.
Google Scholar
 
11.
S.
 
Sengupta
,
G.
 
Basu
, and
A. F.
 
Technology
, “
Properties of Coconut Fiber
,” no.
2015
,
2017
.
Google Scholar
 
12.
S.
 
Indrawati
, “
Innovative Coco Shell Resonator (CSR) Panels for Acoustic Performance
,”
Procedia Eng.
, vol.
170
, pp.
293
–
298
,
2017
.
https://doi.org/10.1016/j.proeng.2017.03.031
Google Scholar
Crossref
Search ADS
 
13.
M. H.
 
Fouladi
,
M.
 
Jailani
, and
M.
 
Nor
, “
Analysis of coir fiber acoustical characteristics
,”
Appl. Acoust.
, vol.
72
, no.
1
, pp.
35
–
42
,
2011
.
https://doi.org/10.1016/j.apacoust.2010.09.007
Google Scholar
Crossref
Search ADS
 
14.
R.
 
Zulkifli
,
M. J. M.
 
Nor
,
M. F. M.
 
Tahir
,
A. R.
 
Ismail
, and
M. z.
 
Nuawi
, “
acoustic properties of multi layer coir fibre sound absorption panel.pdf
,”
J. Appl. Sci.
, Vol.
20
, pp.
3709
–
3714
,
2008
.
https://doi.org/10.3923/jas.2008.3709.3714
Google Scholar
Crossref
Search ADS
 
15.
C. H.
 
Huang
,
J. H.
 
Lin
,
C. W.
 
Lou
, and
Y. T.
 
Tsai
, “
The efficacy of coconut fibers on the sound-absorbing and thermal-insulating nonwoven composite board
,”
Fibers Polym.
, vol.
14
, no.
8
, pp.
1378
–
1385
,
2013
.
https://doi.org/10.1007/s12221-013-1378-7
Google Scholar
Crossref
Search ADS
 
16.
U.
 
Berardi
 and
G.
 
Iannace
, “
Acoustic characterization of natural fibers for sound absorption applications
,”
Build. Environ.
,
2015
.
Google Scholar
 
17.
M. E.
 
Delaney
 and
E.N.
 
Bazley
, “
Acoustical properties o f fibrous absorbent materials
,” no.
3
,
1969
.
Google Scholar
 
18.
D. H.
 
Mueller
 and
A.
 
Krobjilowski
, “
New Discovery in the Properties of Composites Reinforced with Natural Fibers
,”
J. Ind. Text.
, vol.
33
, pp.
111
–
130
,
2003
.
https://doi.org/10.1177/152808303039248
Google Scholar
Crossref
Search ADS
 
19.
A. E. 1050-98
,
ASTM E 1050-98, Standard test method for Impedance and absorption of acoustical materials using tube two microphones and digital frequency analysis system
.
1998
.
20.
A. E. 2611-09
,
ASTM E 2611-09 Standard Test Method for Measurement of Normal Incidence Sound Transmission of Acoustical Materials Based on the Transfer Matrix Method
.
2009
.
21.
K.
 
Attenborough
, “
Acoustical characteristics of Porous Materials
,” in
Acoustical characteristics ofporous materials
,
1982
, pp.
1
–
49
.
Google Scholar
 
22.
C.
 
Wang
 and
J.
 
Torng
, “
Experimental study of the absorption characteristics of some porous ® brous materials,”
vol.
62
, pp.
447
–
459
,
2001
.
Google Scholar
 
23.
N. A.
 
Latif
,
A. Z. M.
 
Rus
, and
M. K. A. G.
 
Zaimy
, “
Effect of Thickness for Sound Absorption of High Density Biopolymer Foams,”
vol.
595
, pp.
183
–
187
,
2014
.
Google Scholar
 
24.
A.
 
Nandanwar
,
M. C.
 
Kiran
, and
K. C.
 
Varadarajulu
, “
Influence of Density on Sound Absorption Coefficient of Fibre Board
,”
Open J. Acoust.
, vol.
7
, pp.
1
–
9
,
2017
.
https://doi.org/10.4236/oja.2017.71001
Google Scholar
Crossref
Search ADS
 
25.
Y. H.
 
Ko
 et al., “
Investigation on the sound absorption and transmission for aluminum foam and its composite,”
vol.
126
, pp.
1825
–
1828
,
2007
.
Google Scholar
 
26.
C. Scientific
and
N.
 
Ryde
, “
Effect of Fiberglass Density and Flow Resistance on Sound Transmission Loss of Cavity Plasterboard Walls*
,” pp.
215
–
220
,
1993
.
This content is only available via PDF.
© 2019 Author(s).
2019
Author(s)