Phase diagram constructed from the HPLC fractions of a polystyrene-b-polyisoprene prepared by anionic polymerization

被引:39
作者
Park, S
Kwon, K
Cho, D
Lee, B
Ree, M
Chang, T [1 ]
机构
[1] Pohang Univ Sci & Technol, Dept Chem, Pohang 790784, South Korea
[2] Pohang Univ Sci & Technol, Polymer Res Inst, Pohang 790784, South Korea
关键词
D O I
10.1021/ma030086r
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Using 2D-LC, a mother PS-b-PI diblock copolymer prepared by anionic polymerization was fractionated into nine fractions differing in the PI and PS block lengths. In this way, PS-b-PIs of the similar molecular weight were obtained. The fractions show composition variation large enough to construct a detailed phase diagram over ca. 10% composition range. In both molecular weight and composition of the fractions, sharper OOT phase boundaries and better-defined morphologies were observed.
引用
收藏
页码:4662 / 4666
页数:5
相关论文
共 26 条
[1]   Structure of shear-induced perforated layer phase in styrene-isoprene diblock copolymer melts [J].
Ahn, JH ;
Zin, WC .
MACROMOLECULES, 2000, 33 (02) :641-644
[2]   MULTIPLE ORDERED PHASES IN A BLOCK COPOLYMER MELT [J].
ALMDAL, K ;
KOPPI, KA ;
BATES, FS ;
MORTENSEN, K .
MACROMOLECULES, 1992, 25 (06) :1743-1751
[3]   BIREFRINGENCE DETECTION OF THE ORDER-TO-DISORDER TRANSITION IN BLOCK COPOLYMER LIQUIDS [J].
BALSARA, NP ;
PERAHIA, D ;
SAFINYA, CR ;
TIRRELL, M ;
LODGE, TP .
MACROMOLECULES, 1992, 25 (15) :3896-3901
[4]   FLUCTUATIONS, CONFORMATIONAL ASYMMETRY AND BLOCK-COPOLYMER PHASE-BEHAVIOR [J].
BATES, FS ;
SCHULZ, MF ;
KHANDPUR, AK ;
FORSTER, S ;
ROSEDALE, JH ;
ALMDAL, K ;
MORTENSEN, K .
FARADAY DISCUSSIONS, 1994, 98 :7-18
[5]   BLOCK COPOLYMER THERMODYNAMICS - THEORY AND EXPERIMENT [J].
BATES, FS ;
FREDRICKSON, GH .
ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1990, 41 (01) :525-557
[6]   A small-angle X-ray scattering study of the phase behavior of diblock copolymer/homopolymer blends [J].
Bodycomb, J ;
Yamaguchi, D ;
Hashimoto, T .
MACROMOLECULES, 2000, 33 (14) :5187-5197
[7]   Current status of the synchrotron small-angle X-ray scattering station BL4C1 at the Pohang Accelerator Laboratory [J].
Bolze, J ;
Kim, J ;
Huang, JY ;
Rah, S ;
Youn, HS ;
Lee, B ;
Shin, TJ ;
Ree, M .
MACROMOLECULAR RESEARCH, 2002, 10 (01) :2-12
[8]   Poly(ethylene oxide-b-isoprene) diblock copolymer phase diagram [J].
Floudas, G ;
Vazaiou, B ;
Schipper, F ;
Ulrich, R ;
Wiesner, U ;
Iatrou, H ;
Hadjichristidis, N .
MACROMOLECULES, 2001, 34 (09) :2947-2957
[9]  
FORSTER S, 1994, MACROMOLECULES, V27, P6922
[10]   THE GYROID - A NEW EQUILIBRIUM MORPHOLOGY IN WEAKLY SEGREGATED DIBLOCK COPOLYMERS [J].
HAJDUK, DA ;
HARPER, PE ;
GRUNER, SM ;
HONEKER, CC ;
KIM, G ;
THOMAS, EL ;
FETTERS, LJ .
MACROMOLECULES, 1994, 27 (15) :4063-4075