Publication:
Effect of gamma irradiation on properties of ultrafine rubbers as toughening filler in polybenzoxazine

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Issued Date

2018

Resource Type

Article

File Type

application/pdf

ISSN

0969806X

DOI

10.1016/j.radphyschem.2018.02.002

Other identifier(s)

2-s2.0-85044660689

Rights Holder(s)

Scopus

Bibliographic Citation

Radiation Physics and Chemistry. Vol 145, (2018), p.184-192

Suggested Citation

Taewattana R., Jubsilp C., Suwanmala P., Rimdusit S. Effect of gamma irradiation on properties of ultrafine rubbers as toughening filler in polybenzoxazine. Radiation Physics and Chemistry. Vol 145, (2018), p.184-192. doi:10.1016/j.radphyschem.2018.02.002 Retrieved from: https://hdl.handle.net/20.500.14740/6049

Title

Effect of gamma irradiation on properties of ultrafine rubbers as toughening filler in polybenzoxazine

Author(s)

Taewattana R.
 Jubsilp C.
 Suwanmala P.
 Rimdusit S.

Abstract

Three types of ultrafine fully vulcanized powdered rubbers (UFRs), i.e. natural rubber (NR), carboxylated nitrile-butadiene rubber (XNBR), and carboxylated styrene-butadiene rubber (XSBR) were prepared by combined technology between gamma irradiation for crosslinking and spray drying. The effects of doses in a range of 0–250 kGy on swelling ratio, crosslink density, and thermal stability of UFRs were investigated. Smaller particle size of UFRs was obtained at higher dose. A decrease in the swelling ratio and an increase in crosslink density were well corresponded to crosslinking effect related with absorbed dose. The increase in dose was also found to improve thermal performance of URFs. The influence of irradiated UFRs on impact resistance and glass transition temperature (Tg) of polybenzoxazine composites was also evaluated. The highest impact resistance of the composites belonged to the composite filled with irradiated UFXNBR at 200 kGy. While the significantly enhanced Tg of the composite was obtained by an addition of irradiated UFRs with higher doses, i.e. Tg = 173 °C for the composite filled with irradiated UFXNBR at 250 kGy. As a consequence, the UFRs can be used to effectively modify thermal and mechanical properties, especially impact resistance of polybenzoxazine composites. © 2018 Elsevier Ltd

Subject(s)

Butadiene
 Glass transition
 Impact resistance
 Irradiation
 Particle size
 Polymer blends
 Rubber
 Styrene
 Thermodynamic stability
 Acrylonitrile
 Carboxylated styrene butadiene rubbers
 Compatibility
 Cross-link densities
 Nitrile butadiene rubber
 Thermal and mechanical properties
 Thermal Performance
 Ultrafine
 Gamma rays
 Benzoxazine derivative
 Polybenzoxazine
 Rubber
 Unclassified drug
 Article
 Biomechanics
 Controlled study
 Cross linking
 Gamma irradiation
 Glass transition temperature
 Particle size
 Radiation dose
 Spray drying
 Thermostability

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URI

https://hdl.handle.net/20.500.14740/6049

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Scopus: Year 1983-2021

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