Effect of the gamma-form crystal on the thermal fractionation of poly(propylene-co-ethylene)
文献类型：期刊论文
| 作者 | Song, W; Yang, DC |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
 |
| 出版日期 | 2004-12-01 |
| 卷号 | 42期号:23页码:4320-4325 |
| 关键词 | Polyolefins Poly(Propylene-co-ethylene) Separation Techniques Differential Scanning Calorimetry |
| ISSN号 | 0887-6266 |
| DOI | 10.1002/polb.20295 |
| 英文摘要 | The effect of the gamma-form crystal on the thermal fractionation of a commercial poly(propylene-co-ethylene) (PPE) has been studied by differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) techniques. Two thermal fractionation techniques, stepwise isothermal crystallization (SIC) and successive self-nucleation and annealing (SSA), have been used to characterize the molecular heterogeneity of the PPE. The results indicate that the SSA technique possesses a stronger fractionation ability than that of the SIC technique. The heating scan of the SSA fractionated sample exhibits 12 endothermic peaks, whereas the scan of the SIC fractionated sample only shows eight melting peaks. The WAXD observations of the fractionated PPE samples prove that the content of the gamma-form crystals formed during the thermal treatment of the SIC technique is much higher than that of the SSA treatment. The former is 57.4%, whereas the later is 12.6%. The effect of they-form crystals on thermal fractionation ability is discussed. (C) 2004 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000225194000011 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/55823]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yang, DC |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, W,Yang, DC. Effect of the gamma-form crystal on the thermal fractionation of poly(propylene-co-ethylene)[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2004,42(23):4320-4325. |
| APA | Song, W,&Yang, DC.(2004).Effect of the gamma-form crystal on the thermal fractionation of poly(propylene-co-ethylene).JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,42(23),4320-4325. |
| MLA | Song, W,et al."Effect of the gamma-form crystal on the thermal fractionation of poly(propylene-co-ethylene)".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 42.23(2004):4320-4325. |
入库方式： OAI收割
来源：化学研究所
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