Thermomechanical and morphological properties of epoxy resins modified with functionalized hyperbranched polyester

被引：49
作者：
Blanco, I.
Cicala, G.
Lo Faro, C.
Motta, O.
Recca, G.
机构：
[1] Univ Catania, DMFCI, I-95125 Catania, Italy
[2] Cytec Engineered Mat, Wrexham LL139UZ, Wales
[3] Univ Salerno, DSE, I-84084 Fisciano, SA, Italy
来源：
POLYMER ENGINEERING AND SCIENCE | 2006年 / 46卷 / 11期
关键词：
D O I：
10.1002/pen.20604
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Thermomechanical and morphological properties of blends of epoxy monomers and hydroxyl and epoxy functionalized hyperbranched polyesters have been studied. Different properties of the blends were found by changing the cure cycles (a precure step followed by a postcure at higher temperature). All the blends showed phase separation with a particulate morphology. Through the addition of the hydroxyl-ended modifiers, rather than the epoxy-ended, an increase of the viscosity and of the reactivity of the uncured blends was obtained. The blends containing the epoxy functionalized polymer showed some liquid-liquid transitions in the rheological traces, probably because of the phase separation phenomena.
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页码：1502 / 1511
页数：10
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