Structural evolution of multilayered, crystalline-amorphous diblock copolymer thin films

被引：65

作者：

Hong, S ^{[1
]}

MacKnight, WJ ^{[1
]}

Russell, TP ^{[1
]}

Gido, SP ^{[1
]}

机构：

[1] Univ Massachusetts, Dept Polymer Sci & Engn, Mat Res Sci & Engn Ctr, WM Keck Electron Microscopy Lab, Amherst, MA 01003 USA

来源：

MACROMOLECULES | 2001年 / 34卷 / 09期

关键词：

D O I：

10.1021/ma002032c

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 evolution of the morphology of a crystalline/amorphous diblock copolymer poly(ethylene oxide-b-1,4 butadiene) (P(EO-b-BD)) upon crystallization in thin films was studied via interference optical microscopy. Two-dimensional crystallization confined within the PEO lamellar layers was observed with retention of the microphase-separated lamellar morphology formed in the melt state. The morphology was further characterized by TEM and electron diffraction which showed it to consist of alternating layers of PEO and PBD with PEO crystalline chains oriented perpendicular to the lamellar layers of the microphase-separated structure. Multiple parallel. layers of crystalline PEO were found by electron diffraction to be in orientational registry even though they were separated by approximately 10 nm thick layers of amorphous PBD.

引用

页码：2876 / 2883

页数：8

共 33 条

[1]

[Anonymous], J POLYM SCI POLYM S

[2] PATH-DEPENDENT MORPHOLOGIES OF A DIBLOCK COPOLYMER OF POLYSTYRENE HYDROGENATED POLYBUTADIENE [J].