Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13632
ชื่อเรื่อง: Effect of gamma irradiation on properties of ultrafine rubbers as toughening filler in polybenzoxazine
ผู้แต่ง: Taewattana R.
Jubsilp C.
Suwanmala P.
Rimdusit S.
Keywords: 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
วันที่เผยแพร่: 2018
บทคัดย่อ: 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
URI: https://ir.swu.ac.th/jspui/handle/123456789/13632
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044660689&doi=10.1016%2fj.radphyschem.2018.02.002&partnerID=40&md5=54a7fce587a962eae6d8e1c3cce33cc7
ISSN: 0969806X
Appears in Collections:Scopus 1983-2021

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