Morphology, structure, and properties of in situ compatibilized linear low-density polyethylene/polystyrene and linear low-density polyethylene/high-impact polystyrene blends
文献类型：期刊论文
| 作者 | Gao, Y; Huang, HL; Yao, ZH; Shi, D; Ke, Z; Yin, JH |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
 |
| 出版日期 | 2003-08-01 |
| 卷号 | 41期号:15页码:1837-1849 |
| 关键词 | Linear Low-density Polyethylene (Lldpe) Polystyrene High-impact Polystyrene (Hips) Friedel-crafts Alkylation Compatibilization Graft Copolymers |
| ISSN号 | 0887-6266 |
| DOI | 10.1002/polb.10545 |
| 英文摘要 | Blends of linear low-density polyethylene (LLDPE) with polystyrene (PS) and blends of LLDPE with high-impact polystyrene (HIPS) were prepared through a reactive extrusion method. For increased compatibility of the two blending components, a Lewis acid catalyst, aluminum chloride (AlCl3), was adopted to initiate the Friedel-Crafts alkylation reaction between the blending components. Spectra data from Raman spectra of the LLDPE/PS/AlCl3 blends extracted with tetrahydrofuran verified that LLDPE segments were grafted to the para position of the benzene rings of PS, and this confirmed the graft structure of the Friedel-Crafts reaction between the polyolefin and PS. Because the in situ generated LLDPE-g-PS and LLDPE-g-HIPS copolymers acted as compatibilizers in the relative blending systems, the mechanical properties of the LLDPE/PS and LLDPE/HIPS blending systems were greatly improved. For example, after compatibilization, the Izod impact strength of an LLDPE/PS blend (80/20 w/w) was increased from 88.5 to 401.6 J/m, and its elongation at break increased from 370 to 790%. For an LLDPE/HIPS (60/40 w/w) blend, its Charpy impact strength was increased from 284.2 to 495.8 kJ/m(2). Scanning electron microscopy micrographs showed that the size of the domains decreased from 4-5 to less than 1 mum, depending on the content of added AlCl3. The crystallization behavior of the LLDPE/PS blend was investigated with differential scanning calorimetry. Fractionated crystallization phenomena were noticed because of the reduction in the size of the LLDPE droplets. The melt-flow rate of the blending system depended on the competition of the grafting reaction of LLDPE with PS and the degradation of the blending components. The degradation of PS only happened during the alkylation reaction between LLDPE and PS. Gel permeation chromatography showed that the alkylation reaction increased the molecular weight of the blend polymer. The low molecular weight part disappeared with reactive blending. (C) 2003 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000184076600007 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/80919]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yin, JH |
| 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 | Gao, Y,Huang, HL,Yao, ZH,et al. Morphology, structure, and properties of in situ compatibilized linear low-density polyethylene/polystyrene and linear low-density polyethylene/high-impact polystyrene blends[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2003,41(15):1837-1849. |
| APA | Gao, Y,Huang, HL,Yao, ZH,Shi, D,Ke, Z,&Yin, JH.(2003).Morphology, structure, and properties of in situ compatibilized linear low-density polyethylene/polystyrene and linear low-density polyethylene/high-impact polystyrene blends.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,41(15),1837-1849. |
| MLA | Gao, Y,et al."Morphology, structure, and properties of in situ compatibilized linear low-density polyethylene/polystyrene and linear low-density polyethylene/high-impact polystyrene blends".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 41.15(2003):1837-1849. |
入库方式： OAI收割
来源：化学研究所
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