TY - JOUR
T1 - Enhanced irradiation self-crosslinking and co-crosslinking with nitrile rubber of poly(vinyl chloride) with pendent N,N-diethyldithiocarbamate groups
AU - Yang, Wenjun
AU - Guan, Jianjun
AU - Cui, Weiguo
AU - Ye, Shu
AU - Shen, Jiacong
PY - 1997/5
Y1 - 1997/5
N2 - In order to realize the self-crosslinking of poly(vinyl chloride) (PVC) and the co-crosslinking of PVC with nitrile rubber (NBR) under UV light irradiation, PVC with pendent N,N-diethyldithiocarbamate groups (PVC-SR) was prepared through the reaction of PVC with sodium N,N-diethyldithiocarbamate in butanone and was then used to enhance the crosslinking reactions. The effects of UV irradiation time, ambient temperature, PVC-SR functionality and the mixing ratios of PVC-SR/NBR on the degree of gel were investigated and the products were characterized by FT-IR spectra, UV spectra and DSC. The results showed that PVC-SR and the blends of PVC-SR with NBR easily self-crosslinked and co-crosslinked, respectively, under UV irradiation. However, these reactions did not happen for either PVC, NBR or the blends of PVC with NBR, i.e. the introduction of N,N-diethyldithiocarbamate groups effectively enhanced the irradiation crosslinking. The UV spectrum showed that PVC-SR dissociated into macromolecular side-chain sulfur radicals and these radicals resulted in crosslinking reactions.
AB - In order to realize the self-crosslinking of poly(vinyl chloride) (PVC) and the co-crosslinking of PVC with nitrile rubber (NBR) under UV light irradiation, PVC with pendent N,N-diethyldithiocarbamate groups (PVC-SR) was prepared through the reaction of PVC with sodium N,N-diethyldithiocarbamate in butanone and was then used to enhance the crosslinking reactions. The effects of UV irradiation time, ambient temperature, PVC-SR functionality and the mixing ratios of PVC-SR/NBR on the degree of gel were investigated and the products were characterized by FT-IR spectra, UV spectra and DSC. The results showed that PVC-SR and the blends of PVC-SR with NBR easily self-crosslinked and co-crosslinked, respectively, under UV irradiation. However, these reactions did not happen for either PVC, NBR or the blends of PVC with NBR, i.e. the introduction of N,N-diethyldithiocarbamate groups effectively enhanced the irradiation crosslinking. The UV spectrum showed that PVC-SR dissociated into macromolecular side-chain sulfur radicals and these radicals resulted in crosslinking reactions.
UR - https://www.scopus.com/pages/publications/0005750180
U2 - 10.1016/S0014-3057(96)00198-X
DO - 10.1016/S0014-3057(96)00198-X
M3 - Article
AN - SCOPUS:0005750180
SN - 0014-3057
VL - 33
SP - 761
EP - 765
JO - European Polymer Journal
JF - European Polymer Journal
IS - 5
ER -