摘要
A facile method,focusing on emulsification,chain extension and dispersion process in preparing waterborne polyurethane,was developed to prepare emulsion with rod-like nanoparticles.The facile method involves a water addition procedure by in situ generated water to react with polyurethane prepolymer instead of the external water addition process.As a comparison,waterborne polyurethane was synthesized through the external water addition process.According to the characterization methods including FTIR,1H-NMR,TEM and water swelling experiments,it is suggested there are two kinds of hydrogen bonds interactions in hard/soft domain of the novel polyurethane,and the phase separation of hard/soft domains increases significantly.The morphology of the two polyurethanes was quite different(nanorods and spherical particles,respectively),presenting a different surface property.In addition,the water swelling of the novel polyurethane indicates that it holds significant potential application as degradable material.
基金
The author acknowledges the financial support provided by the National Natural Science Foundation of China[Grant No.51802259]
China Postdoctoral Science Foundation Funded Project[Grant No.2019M663785]
the Opening Project of Shanxi Key Laboratory of Advanced Manufacturing Technology[Grant No.XJZZ202001]
the Scientific Research Project of Shaanxi Education Department[Grant No.20JS108]
the Promotion Program for Youth of Shaanxi University science and technology association[Grant No.20190415]
Fund of Key Laboratory of Processing and Quality Evaluation Technology of Green Plastics of China National Light Industry council[Grant No.PQETGP2019003]
the Innovation Guidance of Technology Program of Shaanxi Province[Grant No.2020CGXNG-022]
Xi’an Programs for Science and Technology Plan[Grant No.2020KJRC0090]
The author also acknowledges the previous work[https://www.sciencedirect.com/science/article/pii/S030094401630323X].
