Effects of partial replacement of commercial fillers by recycled poly(ethylene terephthalate) powder on the properties of natural rubber composites

被引:32
作者
Nabil, Hayeemasae [1 ]
Ismail, Hanafi [1 ]
Rashid, Azura Abdul [1 ]
机构
[1] Univ Sains Malaysia, Sch Mat & Mineral Resources Engn, Dept Polymer Engn, Nibong Tebal 14300, Penang, Malaysia
关键词
MECHANICAL-PROPERTIES; HALLOYSITE NANOTUBES;
D O I
10.1002/vnl.20291
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Commercial fillers, including carbon black (N550), halloysite nanotubes (HNTs), and precipitated silica, were replaced by recycled poly(ethylene terephthalate) powder (R-PET) in natural rubber (NR) composites. Five different compositions of NR/N550/R-PET, NR/HNTs/R-PET, and NR/silica/R-PET compounds, i.e., 100/20/0, 100/15/5, 100/10/10, 100/5/15, and 100/0/20 parts per hundred rubber (phr), were prepared on a two-roll mill. The curing behavior, tensile properties, and morphological characteristics of the natural rubber composites were investigated. The results indicated that the replacement of carbon black, HNTs, and silica by R-PET decreased the tensile strength and tensile modulus, such that NR/silica/R-PET composites showed the lowest effect, followed by NR/HNTs/R-PET and NR/N550/R-PET composites. The negative effect on these properties can be explained by the decrease of crosslink density. The curing results revealed that with the replacement of carbon black by R-PET, the scorch time and cure time decreased, but that the NR/HNTs/R-PET and NR/silica/R-PET composites exhibited the opposite trend. Scanning electron microscopy investigation of tensile fracture surfaces confirmed that the co-incorporation of N550/R-PET improved the dispersion of R-PET and enhanced the interaction between the fillers and NR matrix more than R-PET and silica/R-PET hybrid fillers. J. VINYL ADDIT. TECHNOL., 2012. (C) 2012 Society of Plastics Engineers
引用
收藏
页码:139 / 146
页数:8
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