TY - JOUR
T1 - Properties of waterborne polyurethane modified by waterborne hyperbranched polyurethane
AU - Tian, Xing
AU - Li, Jie
AU - Luo, Yunjun
AU - Li, Xiaomeng
PY - 2013/9
Y1 - 2013/9
N2 - Modified waterborne polyurethane was blended with waterborne hyperbranched polyurethane. The rheological, mechanical, thermal properties and microstructure of modified waterborne polyurethane were investigated by viscosity, static tensile test, differential scanning calorimetry and transmission electron microscope. The results show that the viscosity of the modified emulsion can be reduced after blended with waterborne hyperbranched polyurethane. The tensile strength and the elongation at break of modified waterborne polyurethane are enhanced, of which the largest increase reaches 124.69% and 20.13%, respectively. ΔTg and microphase separation reach the maximum with the addition of 6% SWPU6, indicating that the improvement of mechanical properties is caused by the increasing of polyurethane microphase separation degree.
AB - Modified waterborne polyurethane was blended with waterborne hyperbranched polyurethane. The rheological, mechanical, thermal properties and microstructure of modified waterborne polyurethane were investigated by viscosity, static tensile test, differential scanning calorimetry and transmission electron microscope. The results show that the viscosity of the modified emulsion can be reduced after blended with waterborne hyperbranched polyurethane. The tensile strength and the elongation at break of modified waterborne polyurethane are enhanced, of which the largest increase reaches 124.69% and 20.13%, respectively. ΔTg and microphase separation reach the maximum with the addition of 6% SWPU6, indicating that the improvement of mechanical properties is caused by the increasing of polyurethane microphase separation degree.
KW - Hyperbranched polymers
KW - Mechanical properties
KW - Microstructure
KW - Waterborne polyurethane
UR - http://www.scopus.com/inward/record.url?scp=84890168392&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:84890168392
SN - 1000-7555
VL - 29
SP - 19
EP - 22
JO - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
JF - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
IS - 9
ER -