Variable-temperature ftir studies on thermal stability of hydrogen bonding in nylon 6/mesoporous silica nanocomposite
文献类型：期刊论文
| 作者 | Li, Lanjie1,2; Yang, Guisheng1,3 |
| 刊名 | Polymer international
 |
| 出版日期 | 2009-05-01 |
| 卷号 | 58期号:5页码:503-510 |
| 关键词 | Variable-temperature ftir Silica Nylon Nanocomposite Hydrogen bonding |
| ISSN号 | 0959-8103 |
| DOI | 10.1002/pi.2559 |
| 通讯作者 | Yang, guisheng(ygs@geniuscn.com) |
| 英文摘要 | Background: hydrogen bonding is very important in determining the properties of nylons. introducing nanofillers that can form hydrogen bonds with amide groups at the interfaces may result in a different hydrogen bonding stability. understanding the extent of the difference in hydrogen bonding between nylons and their nanocomposites and the mechanisms involved is valuable for explaining the origin of the property improvement of nanocomposites at the molecular level. results: hydrogen bonding in a nylon 6/mesoporous silica nanocomposite (nmsn) was investigated using variable-temperature fourier transform infrared spectroscopy from 30 to 240 degrees c, and the results were compared with those for nylon 6 (n6). emphasis was placed on the analysis of hydrogen bonded n-h stretching and amide i modes. with increasing temperature, the hydrogen bonding in nmsn attenuated and dissociated at much lower rate than in n6. also, the fraction of free carbonyl groups of nmsn in the melt state was much smaller than that of n6. the nanodispersion and mesoporous structure of silica were confirmed using atomic force microscopy and transmission electron microscopy. conclusion: the incorporation of mesoporous silica increases considerably the thermal stability of hydrogen bonding in nmsn, which can be attributed to the interface interaction and the constraining effect of silica on the chain mobility of n6. (c) 2009 society of chemical industry |
| WOS关键词 | IN-SITU POLYMERIZATION ; INFRARED TEMPERATURE ; ALIPHATIC POLYAMIDES ; NYLON-6-CLAY HYBRID ; TRANSITIONS ; POLYMERS ; ALPHA ; PHASE ; GLASS |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000265469600007 |
| 出版者 | JOHN WILEY & SONS LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2403555 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Yang, Guisheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Joint Lab Polymer Sci & Mat, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Shanghai Genius Adv Mat Co Ltd, Shanghai 201109, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Lanjie,Yang, Guisheng. Variable-temperature ftir studies on thermal stability of hydrogen bonding in nylon 6/mesoporous silica nanocomposite[J]. Polymer international,2009,58(5):503-510. |
| APA | Li, Lanjie,&Yang, Guisheng.(2009).Variable-temperature ftir studies on thermal stability of hydrogen bonding in nylon 6/mesoporous silica nanocomposite.Polymer international,58(5),503-510. |
| MLA | Li, Lanjie,et al."Variable-temperature ftir studies on thermal stability of hydrogen bonding in nylon 6/mesoporous silica nanocomposite".Polymer international 58.5(2009):503-510. |
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来源：中国科学院大学
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