Kinetics study on melt grafting copolymerization of LLDPE with acid monomers using reactive extrusion method
文献类型：期刊论文
| 作者 | Shi, Qiang; Zhu, Lianchao; Cai, ChuanLun; Yin, JingHua; Costa, Giovanna |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 2006-09-15 |
| 卷号 | 101期号:6页码:4301-4312 |
| 关键词 | Electron Beam Irradiation Graft Copolymerization Kinetics Reactive Extrusion |
| ISSN号 | 0021-8995 |
| DOI | 10.1002/app.23877 |
| 英文摘要 | Graft copolymerization in the molten state is of fundamental importance as a probe of chemical modification and reactive compatibilization. However, few grafting kinetics studies on reactive extrusion were carried out for the difficulties as expected. In this work, the macromolecular peroxide-induced grafting of acrylic acid and methyl methacrylate onto linear low density polyethylene by reactive extrusion was chosen as the model system for the kinetics study; the samples were taken out from the barrel at five ports along screw axis and analyzed by FTIR, H-1 NMR, and ESR. For the first time, the time-evolution of reaction rate, the reaction order, and the activation energy of graft copolymerization and homopolymerization in the twin screw extruder were directly obtained. On the basis of these results, the general reaction mechanism was tentatively proposed. It was demonstrated that an amount of chain propagation free radicals could keep alive for several minutes even the peroxides completely decomposed and the addition of monomer to polymeric radicals was the rate-controlled step for the graft copolymerization. The results presented here revealed that the relative importance of graft copolymerization compared with homopolymerization mainly depended on the monomer solubility and reactivity, while the process parameters such as reaction temperature also influenced the reaction tendency. (c) 2006 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000239445500098 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/60259]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yin, JingHua |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130021, Peoples R China 2.CNR, Ist Studio Macromol, I-16149 Genoa, Italy |
| 推荐引用方式 GB/T 7714 | Shi, Qiang,Zhu, Lianchao,Cai, ChuanLun,et al. Kinetics study on melt grafting copolymerization of LLDPE with acid monomers using reactive extrusion method[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2006,101(6):4301-4312. |
| APA | Shi, Qiang,Zhu, Lianchao,Cai, ChuanLun,Yin, JingHua,&Costa, Giovanna.(2006).Kinetics study on melt grafting copolymerization of LLDPE with acid monomers using reactive extrusion method.JOURNAL OF APPLIED POLYMER SCIENCE,101(6),4301-4312. |
| MLA | Shi, Qiang,et al."Kinetics study on melt grafting copolymerization of LLDPE with acid monomers using reactive extrusion method".JOURNAL OF APPLIED POLYMER SCIENCE 101.6(2006):4301-4312. |
入库方式： OAI收割
来源：化学研究所
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