TY  - BOOK
AU  - Yunus Wan Md Zin Wan
AU  - Dahlan Khairul Zaman Mohd
AU  - Hussein Mohd Zobir
AU  - Manroshan S
AU  - Rahman Mohamad Zaki Ab
AU  - Slong Lim Chee
TI  - Preparation and characterisation of crosslinked polycaprolactone and natural rubber(SMR CV60) blends
PY  - 2013///
PB  - Journal of Rubber Research
KW  - Blends
KW  - Natural rubber
KW  - Organic peroxide
KW  - Polycaprolactone
KW  - Tensile properties
N2  - Polycaprolactone (PCL) and natural rubber(NR) blends were prepared using a melt blending process, in the absence and presence of an organic peroxide crosslinkng agent. The resulting blends were then characterised for their functional groups using Fourier transform infrared analysis(FTIR), surface morphology using scanning electron microscopy (SEM), crosslink degree using gel content measurements, physical properties using tensile measurements and viscoelastic properties using dynamic mechanical analysis(DMA). FTIR analysis revealed the reduction in C=O stretching and C-O bending of PCL due to crosslinking whereas SEM analysis showed rougher and more irregular surfaces with holes and grooves as well as increasing PCL concentration. Similarly, surfaces with holes after extraction with acetone were also observed using SEM. Gel content experiments showed an increase in gel content of the blends with crosslinking, which reduced with increasing PCL concentration. On the other hand, tesile strength and modulus at 300;increased after crosslinking showed an opposite increasing effect. DMA showed that crosslinking resulted in a more elastic blend behaviour with an increase in the glass transition temperature, Tg for all blend ratios
ER  -