Investigation on effect of pvp on morphological changes and crystallization behavior of nylon 6 in pvp/nylon 6 blends by ftir spectroscopy
文献类型：期刊论文
| 作者 | Hao Chao-wei1,3,4; Zhao Ying1; Li Wan-li1,3; Xu Yi-zhuang2; Wang Du-jin1; Xu Duan-fu1 |
| 刊名 | Spectroscopy and spectral analysis
 |
| 出版日期 | 2008-09-01 |
| 卷号 | 28期号:9页码:2048-2052 |
| ISSN号 | 1000-0593 |
| 关键词 | Pvp Nylon 6 Hydrogen bonding Ir spectroscopy Thermal analysis |
| DOI | 10.3964/j.issn.1000-0593(2008)09-2048-05 |
| 通讯作者 | Zhao ying(yzhao@iccas.ac.cn) |
| 英文摘要 | Temperature-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. |
| WOS关键词 | INFRARED TEMPERATURE ; LITHIUM-SALTS ; POLYAMIDE ; POLYMERS ; MISCIBILITY |
| WOS研究方向 | Spectroscopy |
| WOS类目 | Spectroscopy |
| 语种 | 英语 |
| 出版者 | BEIJING UNIV PRESS |
| WOS记录号 | WOS:000259688600021 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2392659 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhao Ying |
| 作者单位 | 1.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 |
| 推荐引用方式 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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来源：中国科学院大学
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