ICCAS OpenIR
Effect of main-chain rigidity on the phase transitional behavior of comblike polymers
Shi, Haifeng; Zhao, Ying; Jiang, Shichun; Rottstegge, Joerg; Xin, John H.; Wang, Dujin; Xu, Duanfu
2007-05-01
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume40Issue:9Pages:3198-3203
AbstractThe influence of the rigidity of polymer backbones on the side-chain crystallization and phase transition behavior was systematically investigated by a combination of differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), Fourier transform infrared spectroscopy (FTIR), and high-resolution solid-state nuclear magnetic resonance spectroscopy (NMR). DSC investigation indicated that the crystallization number of alkyl carbon atoms of the side chains grafted onto the rigid polymer backbone, poly(p-benzamide) (PBA), is much lower than that of the alkyl carbon atoms of the side chains grafted onto the flexible polymer backbone, poly(ethyleneimine) (PEI), implying that the conformational state of the polymer backbones has a strong effect on the side-chain crystallization behavior in comblike polymers. WAXD and FTIR results proved that these two comblike polymers pack into hexagonal (PBA18C) and orthorhombic (PEI18C) crystals, respectively, depending on the adjusting ability of the polymer backbones for particular conformational states. It was also found that the presence of the crystalline-amorphous interphase (delta = 31.6 ppm) in PBA18C detected by solid-state C-13 NMR spectroscopy can be attributed to the rigid PBA backbone, which restricts the mobility of the alkyl side chains. The conformation effect of the polymer backbones and the packing mode variation of alkyl side chains are explicitly discussed in terms of molecular chain mobility and theory of macromolecular chain conformation.
DOI10.1021/ma062531z
Indexed BySCI
Language英语
WOS IDWOS:000245900200033
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/62946
Collection中国科学院化学研究所
Corresponding AuthorShi, Haifeng
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Engn Plast,Joint Lab Polymer Sci & Mat, Beijing 100080, Peoples R China
2.Hong Kong Polytech Univ, Fac Appl Sci & Text, Kowloon, Hong Kong, Peoples R China
3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Shi, Haifeng,Zhao, Ying,Jiang, Shichun,et al. Effect of main-chain rigidity on the phase transitional behavior of comblike polymers[J]. MACROMOLECULES,2007,40(9):3198-3203.
APA Shi, Haifeng.,Zhao, Ying.,Jiang, Shichun.,Rottstegge, Joerg.,Xin, John H..,...&Xu, Duanfu.(2007).Effect of main-chain rigidity on the phase transitional behavior of comblike polymers.MACROMOLECULES,40(9),3198-3203.
MLA Shi, Haifeng,et al."Effect of main-chain rigidity on the phase transitional behavior of comblike polymers".MACROMOLECULES 40.9(2007):3198-3203.
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