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Chlorohydrination of Natural Rubber Latex using N-chlorosuccnimide for Fuel-resistant Materials


Paper Type 
Contributed Paper
Title 
Chlorohydrination of Natural Rubber Latex using N-chlorosuccnimide for Fuel-resistant Materials
Author 
Pattanapol Chanawannakul and Peerasak Paoprasert
Email 
peerasak@tu.ac.th
Abstract:
 

Natural rubber cannot be effectively used to store or make contact with hydrophobic substances as it will become swollen and lose its shape. In this work, we developed a simple method for synthesizing chlorohydrinated NR from latex using N-chlorosuccinimide (NCS) as a new chlorohydrinating agent for NR latex, in the presence of thiourea and ammonium hydroxide as the catalyst and stabilizer, respectively. A chlorohydrin content as high as 70% was obtained. The swelling resistance of chlorohydrinated NR with 41% chlorohydrin in toluene was improved nearly ten times, compared with that of the unmodified NR. The chlorohydrinated NR also demonstrated excellent resistance against diesel fuel, while the pristine NR was totally degraded. The chlorohydrinated NR thus provides an attractive fuel-resistant material. The thermal and mechanical properties and ozone resistance of the chlorohydrinated NR were characterized.  The merits of the method include low cost of raw materials, simpler production processes, and the ability to scale up production. The chlorohydrinated NR produced can be used in a wide range of applications.

Start & End Page 
1975 - 1984
Received Date 
2017-01-31
Revised Date 
Accepted Date 
2017-04-05
Full Text 
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Keyword 
Natural rubber, Chlorohydrination, N-Chlorosuccinimide
Volume 
Vol.45 No.4 (July 2018)
DOI 
Citation 
Chanawannakul P. and Paoprasert P., Chlorohydrination of Natural Rubber Latex using N-chlorosuccnimide for Fuel-resistant Materials, Chiang Mai Journal of Science, 2018; 45(4): 1975-1984.
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