Double yielding in a styrene/butadiene star block copolymer

被引：41

作者：

Adhikari, R ^{[1
]}

Buschnakowski, M

Henning, S

Goerlitz, S

Huy, TA

Lebek, W

Godehardt, R

Michler, GH

Lach, R

Geiger, K

Kno, K

机构：

[1] Univ Halle Wittenberg, Dept Engn, D-06099 Halle An Der Saale, Germany

[2] Univ Stuttgart, Inst Polymer Technol, D-70199 Stuttgart, Germany

[3] BASF AG, D-67056 Ludwigshafen, Germany

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2004年 / 25卷 / 05期

关键词：

deformation behaviour; double yielding; mechanical properties; morphology; styrene/butadiene star block copolymer;

D O I：

10.1002/marc.200300186

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The morphology and tensile deformation behaviour of a highly asymmetric styrene/butadiene star block copolymer (polystyrene (PS) content = 74%) containing random PS-co-PB (polybutadiene) copolymer as a rubbery phase were investigated. The existence of double yielding, similar to that observed in some semicrystalline polymers, was detected in this nanostructured amorphous polymer. The observed phenomenon may be correlated with two different micromechanical processes taking place at the initial stage of deformation.

引用

页码：653 / 658

页数：6

共 20 条

[11]

HOLDEN G, 2000, UNDERSTANDING THERMO, P15

[12] Styrolux+ and Styroflex+ -: From transparent high impact polystyrene to new thermoplastic elastomers -: Syntheses, applications and blends with other styrene based polymers [J].

Knoll, K ;

Niessner, N .

MACROMOLECULAR SYMPOSIA, 1998, 132 :231-243

[13] THE DOUBLE YIELD IN THE TENSILE DEFORMATION OF THE POLYETHYLENES [J].

LUCAS, JC ;

FAILLA, MD ;

SMITH, FL ;

MANDELKERN, L .

POLYMER ENGINEERING AND SCIENCE, 1995, 35 (13) :1117-1123

[14] Equilibrium behavior of asymmetric ABA triblock copolymer melts [J].

Matsen, MW .

JOURNAL OF CHEMICAL PHYSICS, 2000, 113 (13) :5539-5544

[15] Morphology and micromechanical deformation behavior of styrene/butadiene-block copolymers. I. Toughening mechanisms in asymmetric star block copolymers [J].

Michler, GH ;

Adhikari, R ;

Lebek, W ;

Goerlitz, S ;

Weidisch, R ;

Knoll, K .

JOURNAL OF APPLIED POLYMER SCIENCE, 2002, 85 (04) :683-700

[16] INFLUENCE OF STRUCTURAL AND MORPHOLOGICAL FACTORS ON THE MECHANICAL-PROPERTIES OF THE POLYETHYLENES [J].

POPLI, R ;

MANDELKERN, L .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1987, 25 (03) :441-483

[17] PHENOMENOLOGICAL ASPECTS OF THE DOUBLE YIELD OF POLYETHYLENE AND RELATED COPOLYMERS UNDER TENSILE LOADING [J].

SEGUELA, R ;

DARRAS, O .

JOURNAL OF MATERIALS SCIENCE, 1994, 29 (20) :5342-5352

[18] STRUCTURAL FACTORS IN DEFORMATION OF CRYSTALLINE POLYMERS [J].

TAKAYANAGI, M ;

KAJIYAMA, T .

JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS, 1973, B008 (1-2) :1-27

[19]

TAKAYANAGI M, 1967, J MACROMOL SCI PHY B, V1, P407

[20] Tensile behaviour of homogeneous ethylene copolymers [J].

Xu, XR ;

Xu, JT ;

Feng, LX .

POLYMER INTERNATIONAL, 2002, 51 (05) :458-463

← 1 2 →