全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

一个低分子量聚氧化乙烯从亚稳态的折叠链片晶向稳态的伸直链片晶转化增厚过程的研究

DOI: 10.3724/SP.J.1105.2011.10391, PP. 1040-1052

Keywords: 聚氧化乙烯,片晶,增厚,小角X射线散射

Full-Text   Cite this paper   Add to My Lib

Abstract:

报道分子量为5000的聚氧化乙烯(PEO)从熔融态淬火到液氮温度后形成的两次链折叠(2-FC)片晶增厚过程的研究结果.在升温和恒温条件下,采用小角X射线散射(SAXS)在位地跟踪了2-FC片晶增厚成一次链折叠(1-FC)和进一步成为伸直链(EC)片晶的增厚过程.通过对SAXS数据以及它们的一维相关函数的数据的分析,发现在52℃以下,2-FC片晶主要增厚为1-FC片晶;在52℃以上,2-FC片晶则主要增厚为EC片晶;在58℃到EC片晶的熔点的温度区域里,已经形成的1-FC片晶还会熔融,完全转化为EC片晶.利用偏光显微镜(PLM)和扫描电子显微镜(SEM)观察晶体的形貌,比如球晶,获得的研究结果表明,没有发生大范围的晶体破坏后再形成的变化,也就是说片晶的增厚过程是一个发生在球晶内部的薄片晶熔融后转化为厚片晶的过程.

References

[1]  1 Bassett BC. Principles of Polymer Morphology.Cambridge:Cambridge University Press,1981 2 Wunderlich B.Macromolecular Physics,Vol.1 and 2.New York:Ed.Academic Press,1973 3 Armistead K,Goldbeck-Wood G.Adv Polym Sci,1992,100:221~312 4 Strobl G.The Physics of Polymers 2nd Ed.Heidelberg,New York Springer:1997 5 Keller A,Cheng S Z D.Polymer.1998,39:4461~4487 6 Ungar G,Zeng X B.Chem Rev,2001,101:4157~4188 7 Kovacs A J,Gonthier A,Straupe C.J Polym Sci Polym Symp,1975,50:283~325 8 Kovacs A J,Straupe C,Gonthier A.J Polym Sci Polym Symp,1977,59:31~54 9 Kovacs A J,Straupe C.J Cryst Growth,1980,48:210~226 10 Hoffman J D.Macromolecules,1986,19:1124~1128 11 Arlie P,Spegt P A,Skoulios A.Makomol Chem,1966,99:160~174 12 Arlie P,Spegt P A,Skoulios A.Makomol Chem,1967,104:212~229 13 O’Leary K,Geil P H.J Macromol Sci Phys,1967,B1:147~160 14 Mandelkern L,Sharma R K,Jackson J F.Macromolecules,1969,2:644~647 15 Spegt P.Makromol Chem,1970,139:139~152 16 Dreyfuss P,Keller A J.J Macromol Sci Phys,1970,B4:811~836 17 Fischer E W.Pure Appl Chem,1971,26:385~421 18 Pope D P,Keller A J.J Polym Sci:Polym Phys Ed,1976,14:821~831 19 Thierry A,Skoulios A E.Eup Polym J,1977,13:169~170 20 Cheng S Z D,Zhang A Q,Barley J S,Chen J H,Habenschuss A,Zschack P R.Macromolecules,1991,24:3937~3944 21 Cheng S Z D,Chen J H,Zhang A Q,Barley J S,Habenschuss A,Zschack P R.Macromolecules1992,25:1453~1460. 22 Cheng S Z D,Wu S S,Chen J H,Zhuo Q,Quirk R P,von Meerwall E D,Hsiao B S,Habenschuss A,Zschack P R.Macromolecules,1993,26:5105~5117. 23 Chen E Q,Lee S W,Zhang A,Moon B S,Harris F W,Cheng S Z D,Hsiao B S,Yeh F,Merrewell E V,Grubb D T.Macromolecules,1999,32:4784~4793 24 Zhu D S,Liu Y X,Shi A C,Chen E Q.Polymer,2006,47:5239~5242 25 Liu Y X,Li J F,Zhu D S,Chen E Q,Zhang H D.Macromolecules,2009,42:2886~2890 26 Zhai X M,Wang W,Ma Z P,Wen X J,Yuan F,Tang X F,He B L.Macromolecules,2005,38:1717~1722 27 Zhai X M,Zhang G L,Ma Z P,Tang X F,Wang W.Macromol Chem Phys,2007,208:651~657 28 Tang X F,Wen X J,Zhai X M,Xia N,Wang W.Macromolecules,2007,40:4386~4388 29 Ungar G,Steiny J,Keller A,Bidd I,Whiting M C.Science,1985,229:386~389 30 Phillips P J,Rensch G J.J Polym Sci Polym Phys Ed,1989,27:155~173 31 Ichida T,Tsuji M,Murakami S,Kawaguchi A,Katayama K.Colloid & Polym Sci,1985,263:293~300 32 Cho M H,Kyu T,Lin J S,Saijo K,Hashimoto T.Polymer,1992,33:4152~4157 33 Yamamoto T.J Chem Phys,1997,107:2653~2663 34 Hikosaka M,Amano K,Rastogi S,Keller A.Macromolecules 1997,30:2067~2074 35 Rastogi S,Spoelstra A B,Goossens J G P,Lemstra,P J.Macromolecules,1997,30:7880~7889 36 Liu C,Muthukumar M.J Chem Phys,1998,109:2536~2542 37 Matsuda H,Aoike T,Uehara H,Yamanobe T,Komoto T.Polymer,2001,42:5013~5021 38 Beekmans L G M,van der Meer D W,Vancso G J.Polymer,2002,43:1887~1895 39 Terry A E,Phillips T L,Hobbs J K.Macromolecules,2003,36:3240~3244 40 Marand H,Huang Z.Macromolecules,2004,37:6492~6497 41 Sanz M,Hobbs J K,Miles M J.Langmuir,2004,20:5989~5997 42 Organ S J,Hobbs J K,Miles M J.Macromolecules,2004,37,4562~4572 43 Reiter G,Sommer J U.Phys Rev Letts,1998,80:3771~3774 44 Reiter G,Castelein G,Sommer J U.Phys Rev Letts,2001,86:5918~5921 45 Sanchez I C,Colson J P,Eby R K.J Appl Phys,1973,44:4332~4339 46 Sanchez I C,Peterlin A,Eby R K,McCrackin.J Appl Phys,1974,45:4216~4219 47 Ostwald,W Z.Phys Chem,1897.22,289~330. 48 Ratke L,Voorhees P W.Growth and Coarsening-Ostwald ripening in Material Processing.Berlin:Springer,2002

Full-Text

Contact Us

[email protected]

QQ:3279437679

WhatsApp +8615387084133