Page 55 - Abstract book - TJSSF-2020

Thailand – Japan Student Science Fair 2020 (TJ-SSF 2020)
“Seeding Innovations through Fostering Thailand – Japan Youth Friendship”

Super Water Absorbent Foam from Rubber Crystalline
Bacterial Cellulose

Kewalin Sukkwai , Chariya Noonoi
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Advisors: Suwaree Pongtheerawan , Chalermporn Pongtheerawan
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Suratpittaya School
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Abstract
Super Water Absorbent Foam from Rubber Crystalline Bacterial Cellulose was created for solve the
problem of soil water shortage and reduce water in agriculture. Our inspiration came from the observe
of the Sponge foam from rubber, that has a lot of porous. It can absorbed and retains the water well
same as Hydrogel. So, we interesting in Gelatinous bacterial cellulose because of it can 60 -700 precents
water retention. it can growth in waste water from old coconut juice and wastewater from fruit peel. In
Gelatinous bacterial cellulose has high Hydrogel and has more Alpha cellulose than plant cellulose. So,
we modify the structure of Gelatinous Bacterial Cellulose in to Crystalline by Alkaline degradation and
Acid hydrolysis. After that we make the nature foam by mixed the Crystalline with the Para Rubber. In
this study, we found that the optimum ratio for make the smaller porous from rubber foam was using
para rubber crystalline bacterial cellulose ratio 25:0.5 by mass. After that we test the Mechanical
properties, Physical properties and Biological properties test. We found that the rubber Crystalline
Bacterial have 39.5 µm size porous average, Small porous average 28.02 um, big porous average 61.66
um, Small porous can absorbs water by capillary action. Meanwhile, Super Water Absorbent Foam
from Rubber Crystalline Bacterial Cellulose can be retention water well. Because of the properties of
crystalline cellulose has a lot of surface area and a lot of hydroxyl groups that can form hydrogen bonds,
So It well for absorb and retain water. The property of this invention were 380 percents absorption, The
cool of this inventions were super absorbent polymers (SAPs). Its biodegradation in 90 days in soil. It
can reduce water for plantation. it has low price because in bacterial cellulose culture it used less time,
less space and high cellulose product than other plants above all it more Crystalline Cellulose 92-100
% higher than other raw materials and higher than all plants. we can reduce water for 4 days in mung
bean plantation, at relative humidity 65-75 percent. SAPs had cost 0.05 baht/cm. So this invention is
the best for save the water in planting Because of agriculture as the most important job in the world
wide.

Keywords: Water absorbent foam, Crystalline cellulose

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