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Effects of small molecule plasticizer on the coordination crosslinking reaction between acrylonitrile‐butadiene rubber and copper sulfate
Author(s) -
Yuan Xiaofang,
Shen Fei,
Wu Guozhang,
Wu Chifei
Publication year - 2008
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.20376
Subject(s) - acrylonitrile , differential scanning calorimetry , natural rubber , plasticizer , materials science , ultimate tensile strength , swelling , glass transition , curing (chemistry) , polymer chemistry , dynamic mechanical analysis , copper , scanning electron microscope , tensile testing , composite material , chemical engineering , polymer , copolymer , metallurgy , physics , engineering , thermodynamics
The effects of small molecule plasticizer of liquid acrylonitrile‐butadiene rubber (LNBR) on coordination crosslinking reaction between acrylonitrile‐butadiene rubber (NBR) and copper sulfate (CuSO 4 ) were investigated. Attenuated total reflectance infrared (ATR‐IR), curing curves analysis, equilibrium swelling method, differential scanning calorimetry (DSC), tensile test, and scanning electron microscope (SEM) were used in this work. The ATR‐IR analysis showed that the peak of restricted CN is more explicit in NBR/CuSO 4 /LNBR system. The curing curve analysis showed that NBR/CuSO 4 /LNBR has higher torque. The results of equilibrium swelling method and DSC displayed that NBR/CuSO 4 /LNBR has higher crosslink density and glass transition temperature, respectively. And NBR/CuSO 4 /LNBR has stronger tensile strength and longer elongation at break from tensile test. SEM revealed the reasons that the NBR/CuSO 4 /LNBR has better mechanical properties. All the results showed that addition of an amount of LNBR to NBR/CuSO 4 system could accelerate the coordination crosslinking reaction between NBR and CuSO 4 . POLYM. COMPOS., 2008. © 2008 Society of Plastics Engineers