Fabrication of Functional Waterborne Polyurethane/Montmorillonite Composites by Click Chemistry Method

Abstract

"Click" chemistry method was used to fabricate novel waterborne polyurethane (WPU)/montmorillonite (MMT) composites based on alkyne-containing WPU and azide-modified montmorillonite. The morphology of these composites was characterized by x-ray diffractometer, scanning electron microscope. The mechanical properties, thermal stability, and flame resistance of the composites were investigated by tensile, thermogravimetry and cone calorimetric experiments, etc. The experimental results show that the tensile strength, water resistance and flame retardancy of the WPU/MMT composites have been reinforced efficiently owing to the linking of MMT by click reaction.

Fabrication of high transparent, mechanical strong, and flame retardant waterborne polyurethane composites by incorporating phosphorus‐silicon functionalized cellulose nanocrystals

“…6 By contrast, the introduction of functional fillers into polymer matrices is an efficient way that can remarkably enhance the performances of polyurethane composites. 7,8 Currently, functional nano-fillers (e.g., silica, 9 carbonblack, 10 carbon nano-tubes, 11 graphene oxide derivatives, 12 and montmorillonite 13 ) are usually applied to enhance the mechanical, thermal, and/or flame-retardancy properties of WPU materials. However, these fillers often restacked and agglomerated in water-borne polymeric matrixes, and thus influenced the physicochemical properties of composite materials.…”

Preparation and properties of waterborne bio-based polyurethane/siloxane cross-linked films by an in situ sol–gel process

“…To improve the properties of waterborne polyurethanes, several methods have been explored, such as the introduction of nano-particles [11][12][13][14][15][16][17][18][19][20][21][22][23][24], chemical cross-linking [4], and UV curing [25]. Among these methods, the introduction of nano-particles into the WPUs to obtain organic-inorganic hybrid materials have attracted great interest in the past years, given that this method has significantly improved the mechanical, thermal, and barrier properties.…”

“…Among these methods, the introduction of nano-particles into the WPUs to obtain organic-inorganic hybrid materials have attracted great interest in the past years, given that this method has significantly improved the mechanical, thermal, and barrier properties. Over the years, many nano-particles such as graphene oxide [11], silica [12][13][14][15][16][17][18][19], attapulgite [20,21], and organoclay [22][23][24] have been introduced into the waterborne polyurethane system to generate organic-inorganic hybrid materials. Among these nano-particles, nano-silica has provided excellent properties in WPU reinforcement.…”