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Radiation graft-copolymerization of ultrafine fully vulcanized powdered natural rubber: Effects of styrene and acrylonitrile contents on thermal stability

Rimdusit, Niratchaporn, Jubsilp, Chanchira, Mora, Phattarin, Hemvichian, Kasinee, Thuy, Tran Thi, Karagiannidis, Panagiotis and Rimdusit, Sarawut (2021) Radiation graft-copolymerization of ultrafine fully vulcanized powdered natural rubber: Effects of styrene and acrylonitrile contents on thermal stability. Polymers. ISSN 2073-4360 (In Press)

Item Type: Article

Abstract

Graft copolymers, deproteinized natural rubber-graft-polystyrene (DPNR-g-PS) and deproteinized natural rubber-graft-polyacrylonitrile (DPNR-g-PAN), were prepared by grafting of styrene (St) or acrylonitrile (AN) monomers onto DPNR latex via emulsion copolymerization. Then, ultrafine fully vulcanized powdered natural rubbers (UFPNRs) were produced by electron beam irradiation of the graft copolymers in the presence of di-trimethylolpropane tetraacrylate (DTMPTA) as crosslinking agent and subsequently a fast spray drying process. The effects of St or AN monomer contents and the radiation doses on the chemical structure, thermal stability, and physical properties of the graft copolymers and UFPNRs were investigated. The results showed that solvent resistance and grafting efficiency of DPNR-g-PS and DPNR-g-PAN were enhanced with increasing monomer content. SEM morphology of the UFPNRs showed separated and much less agglomerated particles with an average size about 6 μm. Therefore, it is possible that the developed UFPNRs grafted copolymers with good solvent resistance and rather high thermal stability can be used easily as toughening modifiers for polymers and their composites.

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More Information

Depositing User: Panagiotis Karagiannidis

Identifiers

Item ID: 14099
ISSN: 2073-4360
URI: http://sure.sunderland.ac.uk/id/eprint/14099

Users with ORCIDS

ORCID for Panagiotis Karagiannidis: ORCID iD orcid.org/0000-0002-2709-4161

Catalogue record

Date Deposited: 06 Oct 2021 10:16
Last Modified: 25 Jan 2022 08:50

Contributors

Author: Panagiotis Karagiannidis ORCID iD
Author: Niratchaporn Rimdusit
Author: Chanchira Jubsilp
Author: Phattarin Mora
Author: Kasinee Hemvichian
Author: Tran Thi Thuy
Author: Sarawut Rimdusit

University Divisions

Faculty of Technology > School of Engineering

Subjects

Sciences > Chemistry
Engineering > Mechanical Engineering

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