Study of elastic modulus and yield strength of polymer thin films using atomic force microscopy
文献类型：期刊论文
| 作者 | Du BY ; Tsui OKC ; Zhang QL ; He TB |
| 刊名 | langmuir
 |
| 出版日期 | 2001 |
| 卷号 | 17期号:11页码:3286-3291 |
| ISSN号 | 0743-7463 |
| 关键词 | SURFACE MOLECULAR-MOTION GLASS-TRANSITION TEMPERATURE POLYSTYRENE FILMS POLY(METHYL METHACRYLATE) INDENTATION EXPERIMENTS MECHANICAL-PROPERTIES NANOINDENTATION HARDNESS PILEUP LOAD |
| 通讯作者 | tsui okc |
| 中文摘要 | nanometer-scale elastic moduli and yield strengths of polycarbonate (pc) and polystyrene (ps) thin films were measured with atomic force microscopy (afm) indentation measurements. by analysis of the afm indentation force curves with the method by oliver and pharr, young's moduli of pc and ps thin films could be obtained as 2.2 +/- 0.1 and 2.6 +/- 0.1 gpa, respectively, which agree well with the literature values. by fitting johnson's conical spherical cavity model to the measured plastic zone sizes, we obtained yield strengths of 141.2 mpa for pc thin films and 178.7 mpa for ps thin films, which are similar to2 times the values expected from the literature. we propose that it is due to the afm indentation being asymmetric, which was not accounted for in johnson's model. a correction factor, epsilon, of similar to0.72 was introduced to rescale the plastic zone size, whereupon good agreement between theory and experiment was achieved. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000168955300024 |
| 公开日期 | 2010-11-04 |
| 源URL | [http://202.98.16.49/handle/322003/20761]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Du BY,Tsui OKC,Zhang QL,et al. Study of elastic modulus and yield strength of polymer thin films using atomic force microscopy[J]. langmuir,2001,17(11):3286-3291. |
| APA | Du BY,Tsui OKC,Zhang QL,&He TB.(2001).Study of elastic modulus and yield strength of polymer thin films using atomic force microscopy.langmuir,17(11),3286-3291. |
| MLA | Du BY,et al."Study of elastic modulus and yield strength of polymer thin films using atomic force microscopy".langmuir 17.11(2001):3286-3291. |
入库方式： OAI收割
来源：长春应用化学研究所
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