Multiblock segmented polyurethanes and polyurethane-ureas based on poly(ethylene oxide)/poly(propylene oxide)/poly(ethylene oxide) macrodiols. Synthesis and characterization

被引：0

作者：

Filip, Daniela ^{[1
]}

Macocinschi, Doina ^{[1
]}

Ioanid, Ghiocel Emil ^{[1
]}

Vlad, Stelian ^{[1
]}

机构：

[1] Petru Poni Inst Macromol Chem, Iasi 700487, Romania

来源：

POLIMERY | 2010年 / 55卷 / 05期

关键词：

polyurethane; polyurethane-urea; multi-block structure; amphiphility; self assembly; BLOCK-COPOLYMERS; TRIBLOCK COPOLYMER; THERMAL-STABILITY; SUSTAINED-RELEASE; BEHAVIOR; MORPHOLOGY; PHASE; SALT; CRYSTALLIZATION; SOLUBILIZATION;

D O I：

暂无

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 amphiphilic behavior of poly(ethylene oxide)/poly(propylene oxide)/poly(ethylene oxide) block copolymers has been broadened by introducing new urethane-urea as well as poly(ethylene glycol) co-segments in polyurethane (PUR) and polyurethane-ureas (PURU) materials. Supermolecular organization and self-assembly was confirmed by electron microscopy transmission observations. The driving force for self-assembling is represented by the amphiphilic nature of these materials, the interactional segment length and stabilization through hydrogen bonding. FT-IR spectroscopy was used to investigate the hydrogen bonding related to phase segregation. Phase transitions and phase segregation was evidenced by DSC analyses. The relationship between structure and thermal stability was investigated by thermogravimetric analysis.

引用

页码：358 / 365

页数：8

共 39 条

[1] Structural polymorphism of poly(ethylene oxide)-poly(propylene oxide) block copolymers in nonaqueous polar solvents [J].