eXPRESS Polymer Letters | |
A new strategy for the synthesis of modified novolac resin and its polymer/clay nanocomposite | |
R. Mohammad-Rezaei1  | |
关键词: nanocomposites; epoxidized novolac; epoxidized polystyrene; clay; thermal stability; | |
DOI : 10.3144/expresspolymlett.2019.46 | |
学科分类:生物科学(综合) | |
来源: eXPRESS Polymer Letters | |
【 摘 要 】
A novel epoxy nanocomposite composed of epoxidized novolac (ENR), epoxidized polystyrene (EPSt), and nanoclaywas fabricated and characterized successfully. For this purpose, the novolac was epoxylated using a substitution nucleophilicreaction between hydroxyl group of novolac and chlorine group of epichlorohydrin. The EPSt was synthesizedthrough the oxidizing of an allylated PSt (All-PSt). A mixture of ENR (70 wt%), EPSt (20 wt%) and Cloisite® 20A (5 wt%)was cured using ethylenediamine (EDA; 5 wt%) to afford a C-ENR-EPSt/clay nanocomposite. The transition electron microscopy(TEM) as well as powder X-ray diffraction (XRD) analysis revealed that the fabricated nanocomposite has an exfoliatedstructure. As the thermal property studies results, the addition of EPSt as well as Cloisite® 20A has synergistic effecton the thermal stability of the ENR resin.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201910287768184ZK.pdf | 484KB | download |