Author:
Longsiri Krittaphorn,Mora Phattarin,Peeksuntiye Watcharapong,Jubsilp Chanchira,Hemvichian Kasinee,Karagiannidis Panagiotis,Rimdusit Sarawut
Abstract
AbstractThis research aims to modify ultrafine fully vulcanized powdered natural rubber (UFPNR) prepared by emulsion graft-copolymerization with styrene (St) and acrylonitrile (AN) monomers onto deproteinized natural rubber (DPNR). The effects of monomers content and St/AN weight ratio on grafting efficiency and thermal stability of the developed DPNR-g-(PS-co-PAN) were investigated. The results showed that grafting efficiency was enhanced up to 86% with monomers content 15 phr and weight ratio St:AN 80:20. The obtained DPNR-g-(PS-co-PAN) was radiated by an electron beam at various doses, followed by a spray drying process to produce UFPNR. The obtained modified UFPNR particles irradiated at dose up to 300 kGy were relatively spherical with a particle size of approximately 4.4 µm. Furthermore, the degradation temperature of 5wt% loss (Td5) of UFPNR was found in the range of 349–356 °C. The results revealed that the modified UFPNR is suitable as a toughening filler for a broader spectrum of polymers.
Graphical Abstract
Funder
National Research Council of Thailand
Thailand Science Research and Innovation
the 90TH Anniversary of Chulalongkorn University Scholarship
Thailand Institute of Nuclear Technology
Publisher
Springer Science and Business Media LLC
Subject
Renewable Energy, Sustainability and the Environment,Biomedical Engineering,Food Science,Biotechnology