Page 99 - Abstract book - TJSSF-2020

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

Oral and Poster Presentation

Section D : Physics

Shape memory composite bag from rubber reinforced with cellulose from
grapefruit peel.

Kanokkorn Permpiumsup , Thipparada Berkban
1
1
Advisors: Kanokrat Singnui , Thorsak Kitttikorn
1
2

Princess Chulabhorn Science High School Nakhon Si Thammarat
1
Prince of Songkla University
2
Abstract

The directors has made of nano-composite bags from rubber, reinforced with cellulose from grapefruit
peel, with cellulose extracted with NaOH, HCl, Acetic acid to obtain cellulose, and then cellulose
extraction by acid method. hydrolysis with Sulfuric acid and ethyl alcohol. Then the fibers were
examined using, and then mixed with rubber using crosslink agent that consist of Potassium hydroxide
solution 0.35% , Sulphur dispersion 1.5% , ZDC dispersion 0.75% , ZMBT dispersion 0.6% , Zinc
oxide dispersion 0.3% at the amount of cellulose are 0%, 1%, 3%, 5%, 10%, 15%, 20% after that test
by using the universal testing machine and test the memory performance at various temperatures with
Dynamic Mechanical Analyzer, then form the bag with Blown Film Extrusion technique. From rubber
and grapefruit peel 5%, the maximum tensile strength was 489 N/m , followed by 10%, 15%, 20%, 0%,
2
respectively, with the statistical significance of ANOVA 0.05 and the results of the performance tests
found. That the composite bag 5% of rubber and grapefruit peel had the highest tensile strength at
various temperatures at 100% stress, 150% stress and 200% stress, which were 98.6%, 98.1%, and 97%
respectively at ANOVA 0.05 statistics, followed by 10%, 15%, 20%, 0%, respectively. From the results,
it can be concluded that the most suitable ratio is 1% cellulose.

Keywords: natural rubber , cellulose , shape memory
2
3
1

87