ICCAS OpenIR
Investigation on effect of PVP on morphological changes and crystallization behavior of nylon 6 in PVP/Nylon 6 blends by FTIR spectroscopy
Hao Chao-wei1,3,4; Zhao Ying1; Li Wan-li1,3; Xu Yi-zhuang2; Wang Du-jin1; Xu Duan-fu1
2008-09-01
Source PublicationSPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN1000-0593
Volume28Issue:9Pages:2048-2052
AbstractTemperature-dependent FF IR, DSC and POM were used to investigate the interaction between PVPK90 and nylon 6 molecules and its effect on the thermal behavior and morphology of nylon 6. DSC result suggest that the melting and crystallization behavior of nylon 6 are obviously influenced by the introduction of PVP. With the PVP content increasing. the crystallization temperature, melting temperature and the crystallinity of nylon 6 decreased. and eventually, both the exothermal and endothermic peaks could not be observed when the PVP content reached 80%, implying that the aggregation structure of nylon 6 changes from the crystalline state to the amorphous state. FTIR provided the evidence of the interaction between PVP and nylon 6 molecules. With the increase in PVP content, the peak position Of VN-H of nylon 6 gradually shifts from 3 311 to 3 300 cm(-1) with 90% content of PVP, and the half height peak width is broadened correspondingly. Three peaks were obtained in the carbonyl group absorption band for PVPK90/Nylon 6(50/50) and PVPK90/Nylon 6(80/20) blends from the curve-fitting results. With the addition of PVP molecules, the v (C=O) of nylon 6 shifts to higher wave number and a new peak located at about 1 620 cm(-1) appears and its peak area increases with the content of PVP. The above spectral variation of v (C=O) and VN 11 in the PVPK90/Nylon 6 blend indicates that the carbonyl group of PVP could form H-bonding with N-H group of nylon 6 molecule, and partially destroy the hydrogen bonding between the nylon 6 molecules. POM results showed that the spherulitic size of nylon 6 decreases with the increment of the PVP and becomes more imperfecti and when the PVP content reaches 80%. no spherulites could be observed. This phenomenon is attributed to the molecular interactions between the PVP and the nylon 6 molecules. which weakens the free mobility of nylon 6 chains to form regular packing and eventually induces the change in the spherulitic morphology of nylon 6. In summary, the molecular interactions between the carbonyl group Of PVP Molecules and N-H group of nylon 6 molecules account for the above changes in the crystalline structure and the morphology of nylon 6 in the blends.
KeywordPvp Nylon 6 Hydrogen Bonding Ir Spectroscopy Thermal Analysis
DOI10.3964/j.issn.1000-0593(2008)09-2048-05
Indexed BySCI
Language英语
WOS IDWOS:000259688600021
PublisherBEIJING UNIV PRESS
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65504
Collection中国科学院化学研究所
Corresponding AuthorZhao Ying
Affiliation1.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Joint Lab Polymer Sci & Mat, Beijing Natl Lab Mol Sci,Inst Chem, Beijing 100190, Peoples R China
2.Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
3.Hangzhou Normal Univ, Key Lab Organcisilicon Chem & Matorial Technol Mi, Hangzhou 310012, Zhejiang, Peoples R China
4.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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GB/T 7714
Hao Chao-wei,Zhao Ying,Li Wan-li,et al. Investigation on effect of PVP on morphological changes and crystallization behavior of nylon 6 in PVP/Nylon 6 blends by FTIR spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2008,28(9):2048-2052.
APA Hao Chao-wei,Zhao Ying,Li Wan-li,Xu Yi-zhuang,Wang Du-jin,&Xu Duan-fu.(2008).Investigation on effect of PVP on morphological changes and crystallization behavior of nylon 6 in PVP/Nylon 6 blends by FTIR spectroscopy.SPECTROSCOPY AND SPECTRAL ANALYSIS,28(9),2048-2052.
MLA Hao Chao-wei,et al."Investigation on effect of PVP on morphological changes and crystallization behavior of nylon 6 in PVP/Nylon 6 blends by FTIR spectroscopy".SPECTROSCOPY AND SPECTRAL ANALYSIS 28.9(2008):2048-2052.
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