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

被引：3
|
作者：
Longsiri, Krittaphorn [1 ]
Mora, Phattarin [2 ]
Peeksuntiye, Watcharapong [1 ]
Jubsilp, Chanchira [2 ]
Hemvichian, Kasinee [3 ]
Karagiannidis, Panagiotis [4 ]
Rimdusit, Sarawut [1 ]
机构：
[1] Chulalongkorn Univ, Fac Engn, Dept Chem Engn, Res Unit Polymer Mat Med Practice Devices, Bangkok 10330, Thailand
[2] Srinakharinwirot Univ, Fac Engn, Dept Chem Engn, Nakhonnayok 26120, Thailand
[3] Thailand Inst Nucl Technol, Nakhonnayok 26120, Thailand
[4] Univ Sunderland, Fac Technol, Sch Engn, Sunderland SR6 0DD, England
来源：
BIORESOURCES AND BIOPROCESSING | 2022年 / 9卷 / 01期
关键词：
Graft copolymer; DPNR-g-(PS-co-PAN); UFPNR; Electron beam vulcanization; Spray drying; ELECTRON-BEAM IRRADIATION; POWDERED RUBBER; ELASTOMERIC NANOPARTICLES; METHYL-METHACRYLATE; POLYMERIZATION; MORPHOLOGY; TOUGHNESS; LATEX;
D O I：
10.1186/s40643-022-00577-5
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
This 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 mu m. Furthermore, the degradation temperature of 5wt% loss (T-d5) of UFPNR was found in the range of 349-356 degrees C. The results revealed that the modified UFPNR is suitable as a toughening filler for a broader spectrum of polymers.
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页数：19
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