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Ultrafine fully vulcanized natural rubber modified by graft‑copolymerization with styrene and acrylonitrile monomers

Longsiri, Krittaphorn, Mora, Phattarin, Peeksuntiye, Watcharapong, Jubsilp, Chanchira, Hemvichian, Kasinee, Karagiannidis, Panagiotis and Rimdusit, Sarawut (2022) Ultrafine fully vulcanized natural rubber modified by graft‑copolymerization with styrene and acrylonitrile monomers. Bioresources and Bioprocessing.

Item Type: Article


This research aims to modify ultrafne fully vulcanized powdered natural rubber (UFPNR) prepared by emulsion
graft-copolymerization with styrene (St) and acrylonitrile (AN) monomers onto deproteinized natural rubber (DPNR).
The efects of monomers content and St/AN weight ratio on grafting efciency and thermal stability of the devel�oped DPNR-g-(PS-co-PAN) were investigated. The results showed that grafting efciency 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 modifed UFPNR particles irradiated at dose up to 300 kGy were relatively spherical with a particle size of approximately 4.4 µm. Fur�thermore, the degradation temperature of 5wt% loss (Td5) of UFPNR was found in the range of 349–356 °C. The results revealed that the modifed UFPNR is suitable as a toughening fller for a broader spectrum of polymers.

Longsiri et al. Bioresources and Bioprocessing (2022) 985.pdf - Published Version
Available under License Creative Commons Attribution.

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More Information

Uncontrolled Keywords: Graft copolymer, DPNR-g-(PS-co-PAN), UFPNR, Electron beam vulcanization, Spray drying
Depositing User: Panagiotis Karagiannidis


Item ID: 15080

Users with ORCIDS

ORCID for Panagiotis Karagiannidis: ORCID iD

Catalogue record

Date Deposited: 09 Sep 2022 09:43
Last Modified: 09 Sep 2022 09:43


Author: Panagiotis Karagiannidis ORCID iD
Author: Krittaphorn Longsiri
Author: Phattarin Mora
Author: Watcharapong Peeksuntiye
Author: Chanchira Jubsilp
Author: Kasinee Hemvichian
Author: Sarawut Rimdusit

University Divisions

Faculty of Technology


Sciences > Chemistry
Engineering > Mechanical Engineering

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