Lamellar formation and relaxation in simple sheared poly(ethylene terephthalate) by small-angle X-ray scattering
文献类型：期刊论文
| 作者 | Wang, ZG; Xia, ZY; Yu, ZQ; Chen, EQ; Sue, HJ; Han, CC; Hsiao, BS |
| 刊名 | MACROMOLECULES
 |
| 出版日期 | 2006-04-18 |
| 卷号 | 39期号:8页码:2930-2939 |
| ISSN号 | 0024-9297 |
| DOI | 10.1021/ma051928k |
| 英文摘要 | Semicrystalline poly(ethylene terephthalate) (PET) was oriented with an equal channel angular extrusion (ECAE) process at room temperature, which applied simple shear deformation and generated unique asymmetric lamellar texture. In-situ small-angle X-ray scattering (SAXS) measurements were utilized to study the changes of lamellar structure during heating in samples with and without experiencing the simple shear deformation. The total scattered intensity, fractions of isotropic and anisotropic scattered intensities, orientation factors, and long periods along different shear directions were determined from 2-dimensional SAXS patterns. Orientation-stable a-lamellae with their normal perpendicular to the shear plane exhibited a larger long period after shear and a rapid decrease in long period upon heating, while less orientation-stable beta-lamellae with their normal perpendicular to the flow direction exhibited a smaller long period after shear but only a slight decrease in long period upon heating. The thermally induced lamellar misorientaton could be attributed to the processes of lamellar relaxation and recrystallization of the amorphous phase. The possible molecular mechanisms for lamellar formation during simple shear are also discussed. |
| 语种 | 英语 |
| WOS记录号 | WOS:000236996200029 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/43993]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, ZG |
| 作者单位 | 1.Chinese Acad Sci, Joint Lab Polymer Sci & Mat, CAS, Key Lab Engn Plast,Inst Chem, Beijing 100080, Peoples R China 2.Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA 3.SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA 4.Peking Univ, Coll Chem & Mol Engn, Dept Polymer Sci & Engn, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, ZG,Xia, ZY,Yu, ZQ,et al. Lamellar formation and relaxation in simple sheared poly(ethylene terephthalate) by small-angle X-ray scattering[J]. MACROMOLECULES,2006,39(8):2930-2939. |
| APA | Wang, ZG.,Xia, ZY.,Yu, ZQ.,Chen, EQ.,Sue, HJ.,...&Hsiao, BS.(2006).Lamellar formation and relaxation in simple sheared poly(ethylene terephthalate) by small-angle X-ray scattering.MACROMOLECULES,39(8),2930-2939. |
| MLA | Wang, ZG,et al."Lamellar formation and relaxation in simple sheared poly(ethylene terephthalate) by small-angle X-ray scattering".MACROMOLECULES 39.8(2006):2930-2939. |
入库方式： OAI收割
来源：化学研究所
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