Waterborne Polyurethane Nanocomposites Having Shape Memory Effects

被引：57

作者：

Lee, Soo Kyung ^{[1
]}

Yoon, Sung Ho ^{[1
]}

Chung, Ildoo ^{[1
]}

Hartwig, Andreas ^{[2
]}

Kim, Byung Kyu ^{[1
]}

机构：

[1] Pusan Natl Univ, Dept Polymer Sci & Engn, Pusan 609735, South Korea

[2] Fraunhofer Inst Mfg Technol & Appl Mat Res, D-28359 Bremen, Germany

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2011年 / 49卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

composite; dispersion; polyurethane; shape memory; silica modification; UV cure; MECHANICAL-PROPERTIES; COLLOIDAL SILICA; SURFACE; DISPERSIONS; EXTENSION; BEHAVIOR; POLYMER; HYBRIDS;

D O I：

10.1002/pola.24473

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

UV curable waterborne polyurethane/silica nanocomposites were designed and synthesized with functionalized silicas, where the functionalization was made with allyl isocyanate. The incorporated silica particles gave triple effects of multifunctional chemical cross-links, reinforcing fillers, and stress relaxation retarders. Consequently, functionalized silica incorporated into the polymer chains showed significantly improved mechanical and thermal properties than the simple addition of unmodified silica. Notably, over 99% shape fixity and shape recovery with minimum cyclic hysteresis were obtained for the repeated cycles at 1% loading of the modified silica. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 634-641, 2011

引用

页码：634 / 641

页数：8

共 43 条

[1] Polyurethane macromers - new building blocks for acrylic hybrid emulsions with outstanding performance [J].

Adler, HJ ;

Jahny, K ;

Vogt-Birnbrich, B .

PROGRESS IN ORGANIC COATINGS, 2001, 43 (04) :251-257

[2] Nanoclay-tethered shape memory polyurethane nanocomposites [J].

Cao, Feina ;

Jana, Sadhan C. .

POLYMER, 2007, 48 (13) :3790-3800

[3] Poly(ε-caprolactone)-clay nanocomposites:: Structure and mechanical properties [J].

Chen, BQ ;

Evans, JRG .

MACROMOLECULES, 2006, 39 (02) :747-754

[4] Photocuring kinetics of UV-initiated free-radical photopolymerizations with and without silica nanoparticles [J].

Cho, JD ;

Ju, HT ;

Hong, JW .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2005, 43 (03) :658-670

[5] Influence of silica on shape memory effect and mechanical properties of polyurethane-silica hybrids [J].

Cho, JW ;

Lee, SH .

EUROPEAN POLYMER JOURNAL, 2004, 40 (07) :1343-1348

[6] Use of (glycidoxypropyl)trimethoxysilane as a binder in colloidal silica coatings [J].

Chu, L ;

Daniels, MW ;

Francis, LF .

CHEMISTRY OF MATERIALS, 1997, 9 (11) :2577-2582

[7] Flexible Cross-Linking by Both Pentaerythritol and Polyethyleneglycol Spacer and its Impact on the Mechanical Properties and the Shape Memory Effects of Polyurethane [J].

Chung, Yong-Chan ;

Cho, Tae Keun ;

Chun, Byoung Chul .

JOURNAL OF APPLIED POLYMER SCIENCE, 2009, 112 (05) :2800-2808

[8] Kinetic study and new applications of UV radiation curing [J].

Decker, C .

MACROMOLECULAR RAPID COMMUNICATIONS, 2002, 23 (18) :1067-1093

[9] Structure and dynamics of polyethylene nanocomposites [J].

Dionne, PJ ;

Ozisik, R ;

Picu, CR .

MACROMOLECULES, 2005, 38 (22) :9351-9358

[10] SELECTIVITY IN CYCLO-ADDITIONS TO VINYLHETEROCUMULENES - [2+2]AND[4+2] CYCLOADDITION OF ((DIETHYLAMINO)PROPYNE TO VINYL ISOCYANATE AND VINYL ISOTHIOCYANATE [J].

DONDONI, A ;

KNIEZO, L ;

MEDICI, A .

JOURNAL OF ORGANIC CHEMISTRY, 1982, 47 (20) :3994-3998

← 1 2 3 4 5 →