Evaporation-Induced Crystallization of Pluronic F127 Studied in Situ by Time-Resolved Infrared Spectroscopy

被引：47

作者：

Innocenzi, Plinio ^{[1
,2
]}

Malfatti, Luca ^{[1
,2
]}

Piccinini, Massimo ^{[3
]}

Marcelli, Augusto ^{[4
]}

机构：

[1] Univ Sassari, DAP, Lab Sci Mat & Nanotecnol, I-07041 Sassari, Italy

[2] CR INSTM, I-07041 Sassari, Italy

[3] Porto Conte Ric Srl, I-07041 Alghero, SS, Italy

[4] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2010年 / 114卷 / 01期

关键词：

ANGLE NEUTRON-SCATTERING; POLY(ETHYLENE OXIDE); PHASE-TRANSITIONS; BLOCK-COPOLYMERS; THIN-FILMS; BEHAVIOR; WATER; BLENDS;

D O I：

10.1021/jp908162z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Rapid scan time-resolved infrared spectroscopy has been used to study in situ the crystallization induced by evaporation in an aqueous solution of a triblock copolymer, Pluronic F127. A droplet of the solution was cast on a silicon substrate and the evaporation followed by an infrared microscope in transmission mode. The evaporation rate of water, in the last stage of the process, has been shown to be correlated to the changes in the block copolymer; four different stages call be distinguished. The block copolymer passes from an amorphous micellar state in water to a partially crystallized phase ill well-defined stages of the evaporation; the complete change from amorphous to crystalline state of Pluronic F127 is observed only after all water is evaporated.

引用

页码：304 / 308

页数：5

共 30 条

[1] MICELLIZATION OF POLY(ETHYLENE OXIDE)-POLY(PROPYLENE OXIDE)-POLY(ETHYLENE OXIDE) TRIBLOCK COPOLYMERS IN AQUEOUS-SOLUTIONS - THERMODYNAMICS OF COPOLYMER ASSOCIATION [J].