| INFLUENCE OF SOLVENT AND POLYMER SORT ON ANOMALOUS RHEOLOGICAL BEHAVIOR OF POLYMER SOLUTION AT HIGH DILUTION |
| |
| 作者姓名： | 钱锦文 周国海 郑强 吴平东 |
| |
| 作者单位： | QIAN Jin\|wen\ \{1\}，ZHOU Guo\|hai\ 1，ZHENG Qiang\ 1，WU Ping\|dong\ 2[WT9.，10.BZ]\%(\ 1 Department of Polymer Science and Engineering，Zhejiang University，Hangzhou 310027，China |
| |
| 基金项目： | theNaturalScienceFoundationofChina(NSFC) |
| |
| 摘 要： | ＩＮＴＲＯＤＵＣＴＩＯＮＰｏｌｙｍｅｒｓｉｎｍｅｄｉｕｍａｔｈｉｇｈｄｉｌｕｔｉｏｎｈａｖｅａｂｒｏａｄｒａｎｇｅｏｆａｐｐｌｉｃａｔｉｏｎｓｎｏｗａｄａｙｓ.Ｔｈｅｙｗｅｒｅｕｓｅｄａｓｐｏｕｒｐｏｉｎｔｄｅｐｒｅｓｓａｎｔａｎｄｖｉｓｃｏｓｉｔｙｒｅ ｄｕｃｅｒｏｆｃｒｕｄｅｏｉｌａｎｄｉｔｓｐｒｏｄｕｃｔｓｓｕｃｈａｓＥＶＡａｎｄｉｔｓｄｅｒｉｖａｔｉｖｅｓ(ＳｕｎｉｌＫｕｍｅｒ,1 989;Ｑｉａｎｅｔａｌ.,1 996;Ｑｉａｎｅｔａｌ.,1 996;Ｑｉｅｔａｌ.,1 992 ) ;ｄｒａｇｒｅｄｕｃｅｒｏｆｗａｔｅｒ…
|
INFLUENCE OF SOLVENT AND POLYMER SORT ON ANOMALOUS RHEOLOGICAL BEHAVIOR OF POLYMER SOLUTION AT HIGH DILUTION |
| |
| Abstract: | The rheological behavior of polyvinyl acetate (PVAc) in N,N'\|dimethylformamide (DMF), methyl ethyl ketone (MEK), 1,2\|dichloroethane (DCE), tetrahydrofuran (THF) and toluene (TOL), polystyrene (PS) in DMF, MEK, DCE, THF and cyclohexane (CYH), and random ethylene\|vinyl acetate (EVA) copolymer in DCE, TOL, CYH with and without surfactant of Span80 and in the DCE/CYH solvent mixtures with surfactant of Span80 was examined at high dilution. It was shown that the extent and type of the upsweep or downsweep (anomalous rheological behavior) of the reduced viscosity\|concentration curves of these different polymers at high dilution are markedly dependent on the dielectric constant of the solvent and the polarity of the polymer used. The experimental results indicated that the anomalous rheological behavior of EVA copolymer, widely used as a flow improver, is related to its efficiency in reducing viscosity and depressing pour point of crude oil and waxy solvents. |
| |
| Keywords: | polyvinyl acetate (PVAc) polystyrene (PS) ethylene\|vinyl acetate (EVA) copolymer rheology polymer solution viscosity |
| 本文献已被 CNKI 等数据库收录！ |
|
