Synthesis and properties of polysiloxane graft waterborne polyurethane modified with α-N,N-dihydroxyethylaminopropyl-ω-butylpolydimethylsiloxane
-
Yitao Yu
,
Jing Wang
Abstract
In this study, α-N,N-dihydroxyethylaminopropyl-ω-butylpolydimethylsiloxane was used to prepare waterborne polyurethane-polysiloxane graft copolymer dispersions. α-N,N-dihydroxyethylaminopropyl-ω-butylpolydimethylsiloxane was synthesized via hydroxyl protection, alkylation, anionic ring-opening polymerization, hydrosilylation, and deprotection. Waterborne polyurethane-polysiloxane graft copolymers were prepared by the reaction of poly propylene glycol (PPG), toluene diisocyanate (TDI), 2,2-dimethylol propionic acid (DMPA), 1,4-butanediol (BDO), and α-N,N-dihydroxyethylaminopropyl-ω-butylpolydimethylsiloxane. The water absorption of copolymer films decreased from 163.9 to 17.3% when polysiloxane content increased from 0 to 5%. The tensile strength of the copolymer films increased from 14.0 MPa to 26.3 MPa and decreased when polysiloxane content was more than 3%. The results revealed that the properties of waterborne polyurethane-polysiloxane graft copolymer dispersions and films were improved by grafting polysiloxane chains to polyurethanes.
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©2013 by Walter de Gruyter Berlin Boston
Articles in the same Issue
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Articles in the same Issue
- Masthead
- Masthead
- Original articles
- Heat distortion temperature of PPS/PC blend, PPS/PC nanocomposite and PPS/PC/GF hybrid nanocomposite
- Mechanical and thermal properties of impact modified PBT blends and impact modified PBT nanocomposites
- Twin screw extrusion with Expancel foaming agent
- Facile synthesis of new thermally stable and organo-soluble polyamide-imides from phosphorus-containing aromatic amines and various dianhydrides
- Graft copolymerization of poly(vinyl acetate) onto starch using KMnO4-H2SO4 redox system
- Synthesis and properties of polysiloxane graft waterborne polyurethane modified with α-N,N-dihydroxyethylaminopropyl-ω-butylpolydimethylsiloxane
- Thermal, mechanical and tribological properties of polycarbonate/acrylonitrile-butadiene-styrene blends
- Thermal conductivity and electrical conductivity of silicone rubber filled with aluminum nitride and aluminum powder
- Individual and combined effects of modified starch, bentonite and their composite powder with HPMC on the performance of cement mortars
- Optical characteristics of injection-molded fluorene polymers
- Novel epoxy resin composites containing polyaniline coated short kenaf bast fibers and polyaniline nanowires: mechanical and electrical properties
