Hybrid Polyurethane-Poly(2-hydroxyethyl methacrylate) Semi-IPN-Silica Nanocomposites: Interfacial Interactions and Glass Transition Dynamics

被引：11

作者：

Bershtein, V. A. ^{[1
]}

Gun'ko, V. M. ^{[2
]}

Karabanova, L. V. ^{[3
]}

Sukhanova, T. E. ^{[4
]}

Yakushev, P. N. ^{[1
]}

Egorova, L. M. ^{[1
]}

Glievyy, O. B. ^{[3
]}

Lutsyk, E. D. ^{[3
]}

Pakhlov, E. M. ^{[2
]}

Turova, A. A. ^{[2
]}

Zarko, V. I. ^{[2
]}

Vylegzhanina, M. E. ^{[4
]}

机构：

[1] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[2] Natl Acad Sci, Inst Surface Chem, Kiev, Ukraine

[3] Natl Acad Sci, Inst Macromol Chem, Kiev, Ukraine

[4] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 194021, Russia

来源：

JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS | 2010年 / 49卷 / 01期

关键词：

interfacial interactions; interpenetrating networks; glass transition; polymer-silica nanocomposites; CREEP RATE SPECTROSCOPY; POLY(VINYL PYRROLIDONE); MECHANICAL-BEHAVIOR; SEGMENTAL DYNAMICS; ELASTIC PROPERTIES; FUMED SILICA; POLYMERS; HETEROGENEITY; RELAXATIONS; ADSORPTION;

D O I：

10.1080/00222340903343830

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-poly(2-hydroxyethyl methacrylate) semi-IPN-silica nanocomposites with low content (0.25 and 3 wt%) of differently functionalized 3-D fumed silica nanoparticles were studied using a combined AFM/DSC/CRS approach over the -100 to 160 degrees C range. The pronounced heterogeneity of the PHEMA and PU glass transitions' dynamics and the effects of considerable suppression of dynamics and increasing elastic properties by silica additives were shown. It was caused by formation of peculiarly cross-linked structures due to odouble hybridization,o in particular via selective covalent bonding of the silica surface, functionalized by -OH, -NH2 or -CH=CH2 groups, with the matrix constituents. The silica dispersion remained unchanged in these nanocomposites; therefore the relationships between interfacial interactions and dynamics/modulus behavior could be followed.

引用

页码：18 / 32

页数：15

共 27 条

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