Organic-inorganic nanocomposite films made from polyurethane dispersions and colloidal silica particles

被引:16
作者
Serkis, Magdalena [1 ]
Spirkova, Milena [1 ]
Kredatusova, Jana [2 ]
Hodan, Jiri [2 ]
Bures, Radovan [3 ]
机构
[1] Inst Macromol Chem AS CR, Nanostruct Polymers & Composites Dept, Prague, Czech Republic
[2] Inst Macromol Chem AS CR, Polymer Proc Dept, Prague, Czech Republic
[3] Slovak Acad Sci, Informat Comp & Appl Math Dept, Inst Mat Res, Kosice, Slovakia
关键词
Polyurethane dispersion; colloidal silica; composites; morphology; mechanical properties; MOLECULAR-WEIGHT; POLYCARBONATE; MACRODIOL;
D O I
10.1080/09276440.2016.1124666
中图分类号
TB33 [复合材料];
学科分类号
摘要
Polyurethane/silica nanocomposites were prepared by solution blending of polyurethane water dispersion (PUD) based on polycarbonate macrodiol with colloidal silica aqueous sol LUDOX TMA. Because of mixing PUDs made from linear polyurethane with the nanofiller, only physical polymer/filler type of interface formed by hydrogen bonds was obtained. As a result the materials were possible to reuse after dissolution in acetone followed by dispersion in water. The effect of colloidal silica content on mechanical, thermal, morphological, and swelling properties of obtained films was tested by tensile test, dynamic mechanical thermal analysis, thermogravimertic analysis, scanning electron microscopy, atomic force microscopy, and swelling analyses. The nanocomposites were classified in three groups differing in the internal structure and functional properties: organic matrix filled with inorganic nanofiller (up to 10 wt% of silica), bicontinous systems (25 and 32 wt% of silica) and inorganic matrix filled with polyurethane (50 and 60 wt% of silica). Only small amount of colloidal silica (up to 10 wt%) improves thermo-mechanical properties, smoothes the materials, and suppresses extent of swelling without changing of the films transparency.
引用
收藏
页码:157 / 173
页数:17
相关论文
共 30 条
[1]   Hydrogen bonding and mechanical properties of thin films of polyether-based polyurethane-silica nanocomposites [J].
Bistricic, Lahorija ;
Baranovic, Goran ;
Leskovac, Mirela ;
Bajsic, Emi Govorcin .
EUROPEAN POLYMER JOURNAL, 2010, 46 (10) :1975-1987
[2]   Encapsulation of inorganic particles by dispersion polymerization in polar media - 1. Silica nanoparticles encapsulated by polystyrene [J].
Bourgeat-Lami, E ;
Lang, J .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1998, 197 (02) :293-308
[3]   The waterborne polyurethane dispersions based on polycarbonate diol: Effect of ionic content [J].
Cakic, Suzana M. ;
Spirkova, Milena ;
Ristic, Ivan S. ;
B-Simendic, Jaroslava K. ;
M-Cincovic, Milena ;
Poreba, Rafal .
MATERIALS CHEMISTRY AND PHYSICS, 2013, 138 (01) :277-285
[4]   The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives [J].
Cakic, Suzana M. ;
Ristic, Ivan S. ;
Marinovic-Cincovic, Milena ;
Spirkova, Milena .
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES, 2013, 41 :132-139
[5]   Polyurethane/clay nanocomposites foams: processing, structure and properties [J].
Cao, X ;
Lee, LJ ;
Widya, T ;
Macosko, C .
POLYMER, 2005, 46 (03) :775-783
[6]   Polypropylene/calcium carbonate nanocomposites [J].
Chan, CM ;
Wu, JS ;
Li, JX ;
Cheung, YK .
POLYMER, 2002, 43 (10) :2981-2992
[7]   Modification of colloidal silica on the mechanical properties of acrylic based polyurethane/silica composites [J].
Chen, Guodong ;
Zhou, Shuxue ;
Gu, Guangxin ;
Wu, Limin .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2007, 296 (1-3) :29-36
[8]   Synthesis and characterization of polyimide silica hybrid composites [J].
Chen, Y ;
Iroh, JO .
CHEMISTRY OF MATERIALS, 1999, 11 (05) :1218-1222
[9]   Coatings prepared from waterborne polyurethane dispersions obtained with polycarbonates of 1,6-hexanediol of different molecular weights [J].
Garcia-Pacios, Vanesa ;
Antonio Jofre-Reche, Jose ;
Costa, Victor ;
Colera, Manuel ;
Miguel Martin-Martinez, Jose .
PROGRESS IN ORGANIC COATINGS, 2013, 76 (10) :1484-1493
[10]   Waterborne polyurethane dispersions obtained with polycarbonate of hexanediol intended for use as coatings [J].
Garcia-Pacios, Vanesa ;
Costa, Victor ;
Colera, Manuel ;
Miguel Martin-Martinez, Jose .
PROGRESS IN ORGANIC COATINGS, 2011, 71 (02) :136-146