Neodymium oxide-assisted melt free-radical grafting of maleic anhydride on isotactic-polypropylene by reactive extrusion
文献类型：期刊论文
| 作者 | Zhu, LC; Tang, GB; Shi, Q; Cai, CL; Yin, JH |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
 |
| 出版日期 | 2006 |
| 卷号 | 44期号:1页码:134-142 |
| 关键词 | Graft Copolymers Isotactic-polypropylene Maleic Anhydride Rare Earth Oxide Reactive Extrusion Synergistic Effect |
| ISSN号 | 0887-6266 |
| DOI | 10.1002/polb.20652 |
| 英文摘要 | Rare earth oxide, neodymium oxide (Nd2O3), -assisted melt free-radical grafting of maleic anhydride (MAH) on isotactic-polypropylene (i-PP) was carried out by reactive extrusion. The experimental results reveal that the addition of Nd2O3 into reactive system leads to an enhancement of the grafting degree of MAH, along with an elevated degradation of i-PP matrix. When Nd2O3 content is 4.5 mmol %, the increment of the grafting degree of MAH (maximally) is up to about 30% compared with that of the related system without adding Nd2O3, while the severest degradation of i-PP matrix simultaneously occurs. On the basis of the reaction mechanism of PP-g-MAH proposed before, the sequence of beta-scission and grafting reaction is discussed in detail. It is found that, for the reactive system studied, most tertiary macroradicals first undergo beta-scission, and then, grafting reaction with MAH takes place at the new radical chain ends. The imported Nd2O3 has no effect on the aforementioned reaction mechanism, whereas it enhances the initiating efficiency of the initiator, dicumyl peroxide (DCP). We tentatively explain the experimental results by means of synergistic effect between DCP and Nd2O3. It is calculated that the synergistic effect is maximal when the molar ratio of DCP to Nd2O3 is approximately 1:6. (c) 2005 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000234223000013 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/58641]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yin, JH |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, LC,Tang, GB,Shi, Q,et al. Neodymium oxide-assisted melt free-radical grafting of maleic anhydride on isotactic-polypropylene by reactive extrusion[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2006,44(1):134-142. |
| APA | Zhu, LC,Tang, GB,Shi, Q,Cai, CL,&Yin, JH.(2006).Neodymium oxide-assisted melt free-radical grafting of maleic anhydride on isotactic-polypropylene by reactive extrusion.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,44(1),134-142. |
| MLA | Zhu, LC,et al."Neodymium oxide-assisted melt free-radical grafting of maleic anhydride on isotactic-polypropylene by reactive extrusion".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 44.1(2006):134-142. |
入库方式： OAI收割
来源：化学研究所
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