Generation of compositional-gradient structures in biodegradable, immiscible, polymer blends by intermolecular hydrogen-bonding interactions

被引：24

作者：

Hexig, B ^{[1
]}

Alata, H ^{[1
]}

Asakawa, N ^{[1
]}

Inoue, Y ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Biomol Engn, Midori Ku, Yokohama, Kanagawa 2268501, Japan

来源：

ADVANCED FUNCTIONAL MATERIALS | 2005年 / 15卷 / 10期

关键词：

D O I：

10.1002/adfm.200400550

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A biodegradable, immiscible poly(butylenes adipate-co-butylenes terephthalate) [P(BA-co-BT)]/poly(ethylene oxide) (PEO) polymer blend film with compositional gradient in the film-thickness direction has been successfully prepared in the presence of a low-molecular-weight compound 4,4'-thiodiphenal (TDP), which is used as a miscibility-enhancing agent. The miscibilities of the P(BA-co-BT)/PEO/TDP ternary blend films and the P(BA-co-BT)/PE0/TDP gradient film were investigated by differential scanning calorimetry (DSC). The compositional gradient structure of the P(BA-co-BT)/PEO/TDP (46/46/8 w/w/w) film has been confirmed by microscopic mapping measurement of Fourier-transform infrared spectra and dynamic mechanical thermal analysis. We have developed a new strategy for generating gradient-phase structures in immiscible polymer-blend systems by homogenization, i.e., adding a third agent that can enhance the miscibility of the two immiscible polymers through simultaneous formation of hydrogen bonds with two component polymers.

引用

页码：1630 / 1634

页数：5

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