ICCAS OpenIR
Crystallization and relaxation behavior of partially disentangled poly(vinyl chloride) prepared from large molecule solvent dioctyl phthalate
Sun, Q; Zhou, DS; Wang, XL; Xue, G
2002-08-27
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume35Issue:18Pages:7089-7092
AbstractPoly(vinyl chloride) (PVC) samples for the conformation and structural relaxation studies were prepared by freeze-extracting the solutions in various solvents and with varying concentrations. The partially disentangled PVC samples could be obtained by freeze-extracting very dilute PVC/tetrahydrofuran (THF) and PVC/dimethyl phthalate (DMP) solution (0.05 wt %), while the PVC sample remains in an entangled state after freeze-extracting the concentrated solutions in THF and in DMP. Surprisingly, the extent of interpenetration of PVC chain decreases, even in concentrated solution in dioctyl plithalate (DOP) (5 wt %), which is contrary to accepted theories. DSC and infrared spectroscopic studies showed that a higher ordered conformation could be achieved for the disentangled specimens recovered from concentrated solution in DOP than for the entangled samples prepared from THF and DMP. DSC heating curves showed strong and sharp endothermal peaks for the disentangled polymer after sub-T-g annealing. The structural relaxation behavior of the disentangled PVC freeze-extracted from DOP solutions is more predominant, which is in good agreement with the modeling predictions.
DOI10.1021/ma020407j
Indexed BySCI
Language英语
WOS IDWOS:000177688800049
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78834
Collection中国科学院化学研究所
Corresponding AuthorXue, G
AffiliationNanjing Univ, Dept Polymer Sci & Engn, State Key Lab Polymer Phys & Chem, Nanjing 210093, Peoples R China
Recommended Citation
GB/T 7714
Sun, Q,Zhou, DS,Wang, XL,et al. Crystallization and relaxation behavior of partially disentangled poly(vinyl chloride) prepared from large molecule solvent dioctyl phthalate[J]. MACROMOLECULES,2002,35(18):7089-7092.
APA Sun, Q,Zhou, DS,Wang, XL,&Xue, G.(2002).Crystallization and relaxation behavior of partially disentangled poly(vinyl chloride) prepared from large molecule solvent dioctyl phthalate.MACROMOLECULES,35(18),7089-7092.
MLA Sun, Q,et al."Crystallization and relaxation behavior of partially disentangled poly(vinyl chloride) prepared from large molecule solvent dioctyl phthalate".MACROMOLECULES 35.18(2002):7089-7092.
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