Synthesis and properties of waterborne hyperbranched polyurethane blocked by stearic acid

Xing Tian; Jie Li; Yunjun Luo

Synthesis and properties of waterborne hyperbranched polyurethane blocked by stearic acid

Xing Tian
, Jie Li
, Yunjun Luo^*

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A stearic acid terminated waterborne hyperbranched polyurethane (SWHBPU) was synthesized using stearic acid and waterborne hyperbranched polyurethane (WHBPU). The effect of amount of stearic acid on the blocking reaction efficiency was studied. The structure was characterized by infrared spectrum (IR), carbon nuclear magnetic resonance spectra (¹³C-NMR) and faculties degree analysis. The thermal properties were investigated by thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). Results show that the hydroxyl value of SWHBPU reduces to 30.09 mg KOH/g with stearic acid excess of 40%. Both of the hyperbranched polyurethanes have a large number of hyperbranched-structures, while SWHBPU represents lower T_g and higher starting decomposition temperature compared to WHBPU.

Original language	English
Pages (from-to)	25-28+32
Journal	Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
Volume	29
Issue number	4
Publication status	Published - Apr 2013

Keywords

Hyperbranched polymers
Thermal properties
Waterborne polyurethane

Cite this

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title = "Synthesis and properties of waterborne hyperbranched polyurethane blocked by stearic acid",

abstract = "A stearic acid terminated waterborne hyperbranched polyurethane (SWHBPU) was synthesized using stearic acid and waterborne hyperbranched polyurethane (WHBPU). The effect of amount of stearic acid on the blocking reaction efficiency was studied. The structure was characterized by infrared spectrum (IR), carbon nuclear magnetic resonance spectra (13C-NMR) and faculties degree analysis. The thermal properties were investigated by thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). Results show that the hydroxyl value of SWHBPU reduces to 30.09 mg KOH/g with stearic acid excess of 40\%. Both of the hyperbranched polyurethanes have a large number of hyperbranched-structures, while SWHBPU represents lower Tg and higher starting decomposition temperature compared to WHBPU.",

keywords = "Hyperbranched polymers, Thermal properties, Waterborne polyurethane",

author = "Xing Tian and Jie Li and Yunjun Luo",

year = "2013",

month = apr,

language = "English",

volume = "29",

pages = "25--28+32",

journal = "Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering",

issn = "1000-7555",

publisher = "Chengdu University of Science and Technology",

number = "4",

}

TY - JOUR

T1 - Synthesis and properties of waterborne hyperbranched polyurethane blocked by stearic acid

AU - Tian, Xing

AU - Li, Jie

AU - Luo, Yunjun

PY - 2013/4

Y1 - 2013/4

N2 - A stearic acid terminated waterborne hyperbranched polyurethane (SWHBPU) was synthesized using stearic acid and waterborne hyperbranched polyurethane (WHBPU). The effect of amount of stearic acid on the blocking reaction efficiency was studied. The structure was characterized by infrared spectrum (IR), carbon nuclear magnetic resonance spectra (13C-NMR) and faculties degree analysis. The thermal properties were investigated by thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). Results show that the hydroxyl value of SWHBPU reduces to 30.09 mg KOH/g with stearic acid excess of 40%. Both of the hyperbranched polyurethanes have a large number of hyperbranched-structures, while SWHBPU represents lower Tg and higher starting decomposition temperature compared to WHBPU.

AB - A stearic acid terminated waterborne hyperbranched polyurethane (SWHBPU) was synthesized using stearic acid and waterborne hyperbranched polyurethane (WHBPU). The effect of amount of stearic acid on the blocking reaction efficiency was studied. The structure was characterized by infrared spectrum (IR), carbon nuclear magnetic resonance spectra (13C-NMR) and faculties degree analysis. The thermal properties were investigated by thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). Results show that the hydroxyl value of SWHBPU reduces to 30.09 mg KOH/g with stearic acid excess of 40%. Both of the hyperbranched polyurethanes have a large number of hyperbranched-structures, while SWHBPU represents lower Tg and higher starting decomposition temperature compared to WHBPU.

KW - Hyperbranched polymers

KW - Thermal properties

KW - Waterborne polyurethane

UR - https://www.scopus.com/pages/publications/84877660625

M3 - Article

AN - SCOPUS:84877660625

SN - 1000-7555

VL - 29

SP - 25-28+32

JO - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

JF - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

IS - 4

ER -

Synthesis and properties of waterborne hyperbranched polyurethane blocked by stearic acid

Abstract

Keywords

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