Evolution of Polymorphic Structure in beta-Nucleated Isotactic Polypropylene under a Certain Pressure: Effects of Temperature and Flow
文献类型：期刊论文
| 作者 | Lin, JM; Li, Y; Xu, L; Hua, WQ; Yang, SG; Bian, FG; Lei, J; Li, ZM |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2019 |
| 卷号 | 58期号:14页码:5677—5685 |
| 关键词 | GAMMA-PHASE CRYSTALLIZATION BEHAVIOR MECHANICAL-PROPERTIES POLY(L-LACTIC ACID) SHEAR-FLOW X-RAY ALPHA CRYSTALS GROWTH AGENT |
| ISSN号 | 0888-5885 |
| DOI | 10.1021/acs.iecr.8b06160 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Isotactic polypropylene (iPP) is one of the most intensively investigated polymeric materials for a long time because of its special polymorphism. In this work, the effects of temperature and flow on the evolution of polymorphic structure in beta-nucleated iPP under 100 MPa were studied by X-ray scattering techniques and differential scanning calorimetry (DSC). It was found that the evolution of polymorphic structure in iPP could be divided into four regions in terms of the shear strength under different temperatures: region I (0 s(-1), static condition), beta/gamma crystalline system with dominant beta-form; region II (0-13.8 s(-1), weak shear), alpha/beta/gamma crystalline system; region III (13.8-18.3 s(-1), medium shear), alpha/gamma crystalline system with dominant a-form at a low crystallization temperature (150 degrees C) while with dominant gamma-form at a high crystallization temperature (180 degrees C); region IV (18.3-21.3 s(-1), strong shear), a crystalline system at 150 degrees C while gamma crystalline system at 180 degrees C. These results could afford guidance in practical processing to fabricate iPP products with desired performance via controlling its polymorphic structure. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31610]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Sichuan, Peoples R China; 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, JM,Li, Y,Xu, L,et al. Evolution of Polymorphic Structure in beta-Nucleated Isotactic Polypropylene under a Certain Pressure: Effects of Temperature and Flow[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2019,58(14):5677—5685. |
| APA | Lin, JM.,Li, Y.,Xu, L.,Hua, WQ.,Yang, SG.,...&Li, ZM.(2019).Evolution of Polymorphic Structure in beta-Nucleated Isotactic Polypropylene under a Certain Pressure: Effects of Temperature and Flow.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,58(14),5677—5685. |
| MLA | Lin, JM,et al."Evolution of Polymorphic Structure in beta-Nucleated Isotactic Polypropylene under a Certain Pressure: Effects of Temperature and Flow".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 58.14(2019):5677—5685. |
入库方式： OAI收割
来源：上海应用物理研究所
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