ICCAS OpenIR
Synthesis, thermal, and rheological properties of poly(trimethylene terephthalate)/BaSO4 nanocomposites
Yao, Chenguang1,2; Yang, Guisheng1,3
2009-10-01
Source PublicationPOLYMERS FOR ADVANCED TECHNOLOGIES
ISSN1042-7147
Volume20Issue:10Pages:768-774
AbstractA 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.
KeywordPtt/baso4 Nanocomposites Differential Scanning Calorimetry (Dsc) Morphology Rheological Behavior Thermogravimetric Analysis (Tga)
DOI10.1002/pat.1313
Indexed BySCI
Language英语
WOS IDWOS:000270174500002
PublisherWILEY-BLACKWELL
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/68022
Collection中国科学院化学研究所
Corresponding AuthorYang, Guisheng
Affiliation1.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
Recommended Citation
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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