Thermal properties of polyurethanes derived from molasses before and after biodegradation

被引：11

作者：

Hatakeyama, T

Tokashiki, T

Hatakeyama, H ^{[1
]}

机构：

[1] Fukui Inst Technol, Fukui 9108505, Japan

[2] Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 3055865, Japan

[3] Japan Trop Technol Ctr, Okinawa 9042234, Japan

来源：

MACROMOLECULAR SYMPOSIA | 1998年 / 130卷

关键词：

D O I：

10.1002/masy.19981300113

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polyurethane (PU) foams derived from molasses were placed in soil for various periods from 3 to 12 months. Thermal properties of PU's before and after biodegradation were investigated by differential scanning calorimetry (DSC) and thermogravimetry (TG). Glass transition of PU's after 3 month's degradation was separated into two stages indicating that molecular chains of the original and decomposed portions move independently. Based on variation of glass transition temperature (T(g)), heat capacity difference at T(g) (Delta C(p)), thermal degradation temperature and mass loss, the degradation mechanism of PU was establised.

引用

页码：139 / 150

页数：12

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