Synthesis, thermal, and rheological properties of poly(trimethylene terephthalate)/baso4 nanocomposites
文献类型：期刊论文
| 作者 | Yao, Chenguang1,2; Yang, Guisheng1,3 |
| 刊名 | Polymers for advanced technologies
 |
| 出版日期 | 2009-10-01 |
| 卷号 | 20期号:10页码:768-774 |
| 关键词 | Ptt/baso4 nanocomposites Differential scanning calorimetry (dsc) Morphology Rheological behavior Thermogravimetric analysis (tga) |
| ISSN号 | 1042-7147 |
| DOI | 10.1002/pat.1313 |
| 通讯作者 | Yang, guisheng(ygs@geniuscn.com) |
| 英文摘要 | A novel method was developed for fabricating poly(trimethylene terephthalate) (ptt)/baso4 nanocomposites using in situ polymerization. a nano-baso4 suspension was prepared by reacting h2so4 with ba(oh)(2) in 1,3-propanediol (pdo). the mean size of original nano-baso4 is 15-23 nm. ptt matrix was synthesized by condensation polymerization of bis(3-hydroxypropyl terephthalate) after the completion of transesterification of dimethyl terephthalate (dmt) with pdo. it was found that the addition of baso4 had little influence on the synthesis of ptt. the properties of nanocomposites with a wide range of baso4 fraction were systematically studied. the morphologies of the composites were investigated by transmission electron microscopy (tem), which showed that agglomerate structures did not form until baso4 content higher than 8 wt%. the thermal properties of the nanocomposites were investigated by differential scanning calorimetry (dsc) and thermogravimetric analysis (tga). the dsc results revealed that the triple endothermic melting phenomenon is only observed for the nanocomposites which contained 4wt% baso4, other samples exhibit double endothermic melting. these results indicated that nano-baso4 could induce a microcrystal to form more perfect morphology and restrain the formation of much thicker lamellar crystallinity, that is, nano-baso4 could induce the formation of more uniform crystallinity. besides, the crystallization ability of the composites was greatly improved by loading nano-baso4. the tga results suggested that nano-baso4 slightly increased the maximum-decomposing-rate temperature 1 (t-max1), but markedly increased the maximum-decomposing-rate temperature 2 (t-max2). furthermore, the steady-state shear behavior of samples was investigated by a parallel-plate rheometer. the storage modulus (g') and loss modulus (g '') curves shifted to higher modulus upon addition of 2-16 wt% of nano-baso4. all of the samples investigated exhibited the expected shear-thinning behavior. proper contents of nano-baso4 would decrease the shear viscosity of nanocomposites, whereas superfluous amounts would greatly increase the viscosity of nanocomposites and the composites which loaded 8 wt% nano-baso4 revealed an equivalent shear viscosity compared to pure ptt. copyright (c) 2008 john wiley & sons, ltd. |
| WOS关键词 | IN-SITU POLYMERIZATION ; THERMOMECHANICAL PROPERTIES ; MOLECULAR DIMENSIONS ; COMPOSITES ; POLYPROPYLENE ; HYBRID ; DISPERSION ; MORPHOLOGY ; SURFACE ; FIBERS |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000270174500002 |
| 出版者 | WILEY-BLACKWELL |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2402600 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Yang, Guisheng |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Engn Plast, Joint Lab Polymer Sci & Technol, Inst Chem, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Shanghai Genius Adv Mat Co Ltd, Shanghai 201109, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Chenguang,Yang, Guisheng. Synthesis, thermal, and rheological properties of poly(trimethylene terephthalate)/baso4 nanocomposites[J]. Polymers for advanced technologies,2009,20(10):768-774. |
| APA | Yao, Chenguang,&Yang, Guisheng.(2009).Synthesis, thermal, and rheological properties of poly(trimethylene terephthalate)/baso4 nanocomposites.Polymers for advanced technologies,20(10),768-774. |
| MLA | Yao, Chenguang,et al."Synthesis, thermal, and rheological properties of poly(trimethylene terephthalate)/baso4 nanocomposites".Polymers for advanced technologies 20.10(2009):768-774. |
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来源：中国科学院大学
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