AMPHIPHILIC HETEROARM STAR COPOLYMERS OF POLYSTYRENE AND POLY(ETHYLENE OXIDE)

被引：99

作者：

TSITSILIANIS, C ^{[1
]}

PAPANAGOPOULOS, D ^{[1
]}

LUTZ, P ^{[1
]}

机构：

[1] UNIV STRASBOURG 1,INST CHARLES SADRON,CRM,EAHP,CNRS,F-67083 STRASBOURG,FRANCE

来源：

POLYMER | 1995年 / 36卷 / 19期

关键词：

AMPHIPHILIC HETEROARM STAR COPOLYMERS; POLYSTYRENE-POLY(ETHYLENE OXIDE); ANIONIC POLYMERIZATION; MICELLES; CRYSTALLINITY;

D O I：

10.1016/0032-3861(95)93779-L

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Amphiphilic heteroarm star copolymers bearing polystyrene (PS) and poly(ethylene oxide) (PEG) branches have been synthesized by sequential anionic 'living' copolymerization. These samples have been characterized adequately and shown to exhibit rather well-defined structures. The functionality of the stars is influenced mainly by the molar ratio of divinylbenzene per living ends and the molecular weight of the linear PS tetrahydrofuran, which is not a selective solvent for the different arms. Finally, it has been shown that the PEO arms can be crystallized, forming well-defined spherulites. This ability is strongly affected by the PEO content and the thermal history of the samples.

引用

页码：3745 / 3752

页数：8

共 25 条

[1]

ALLIET DF, 1968, 6TH GPC SEM

[2]

[Anonymous], 1969, POLYM PREP AM CHEM S

[3]

BERLINOVA IV, 1989, MAKROMOL CHEM, V190, P1515

[4] BRANCHED POLYMERS .3. DIMENSIONS OF CHAINS WITH SMALL EXCLUDED VOLUME [J].

BERRY, GC ;

OROFINO, TA .

JOURNAL OF CHEMICAL PHYSICS, 1964, 40 (06) :1614-&

[5]

CALLOT Y, 1963, J POLYM SCI, V4, P473

[6]

DELACRUZ MO, 1986, MACROMOLECULES, V19, P2501

[7]

Elias HG, 1972, LIGHT SCATTERING POL

[8]

Flory P. J., 1953, PRINCIPLES POLYM CHE

[9]

GNANOU Y, 1988, MAKROMOL CHEM, V189, P2885

[10] STAR-BRANCHED POLYMERS .4. SYNTHESIS OF 18-ARM POLYISOPRENES [J].

HADJICHRISTIDIS, N ;

FETTERS, LJ .

MACROMOLECULES, 1980, 13 (01) :191-193

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