Preparation and properties of hyperbranched polyurethanes via oligomeric A2+bB2 approach

被引：19

作者：

Chen, Aifang ^{[1
]}

Yao, Chang ^{[1
]}

Zeng, Shaomin ^{[1
]}

Yi, Changfeng ^{[1
,2
]}

Xu, Zushun ^{[1
]}

机构：

[1] Hubei Univ, Coll Mat Sci & Engn, Wuhan 430062, Peoples R China

[2] Hubei Univ, Minist Educ, Key Lab Synth & Applicat Organ Funct Mol, Wuhan 430062, Peoples R China

来源：

POLYMER BULLETIN | 2008年 / 61卷 / 03期

关键词：

D O I：

10.1007/s00289-008-0959-x

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Hyperbranched polyurethanes (HPUs) were synthesized from isocyanate end-capped poly(1,4-butylene adipate glycol) and diethanolamine via oligomeric A(2) + bB(2) approach. The structures of the resulting polymers were characterized by FT-IR, C-13 NMR. The degree of branching (DB) was calculated according to the C-13 NMR spectra. The properties of HPUs were investigated using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-ray diffraction (XRD), adhesion strength tests. It was found that the thermal stability of the HPU decreased with the increase of hard segment content. The HPU could be used as hot melt adhesive, and the maximum lap shear strength was up to 6.84 MPa.

引用

页码：363 / 371

页数：9

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