Effect of polyisocyanate hardener on waterborne polyurethane adhesive containing different amounts of ionic groups

Mohammad Mizanur Rahman; Han Do Kim

doi:10.1007/BF03218736

Effect of polyisocyanate hardener on waterborne polyurethane adhesive containing different amounts of ionic groups

Mohammad Mizanur Rahman, Han Do Kim^*

^*Corresponding author for this work

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

20 Scopus citations

Abstract

Waterborne polyurethane (WBPU) adhesive with varying amounts of dimethylol propionic acid (DMPA) was synthesized by prepolymer process and blended with polyisocyanate hardener. The mean particle size of the WBPU dispersion decreased with increasing DMPA content. ¹H NMR spectroscopy confirmed the formation of allophanate bonds and biuret bonds due to the reaction of hardener NCO with urethane/urea groups. The optimum NCO content with the greatest adhesive strength was dependent on the total content of urethane/urea groups in the WBPU molecules. The optimum NCO content increased with increasing number of urethane groups (DMPA content). The adhesion strength of WBPU adhesives was maximized at a molar ratio of hardener NCO to urethane/urea of about 0.28.

Original language	English
Pages (from-to)	634-639
Number of pages	6
Journal	Macromolecular Research
Volume	14
Issue number	6
DOIs	https://doi.org/10.1007/BF03218736
State	Published - Dec 2006
Externally published	Yes

Keywords

Adhesive strength
Hardener
Waterborne polyurethane

ASJC Scopus subject areas

General Chemical Engineering
Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1007/BF03218736

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title = "Effect of polyisocyanate hardener on waterborne polyurethane adhesive containing different amounts of ionic groups",

abstract = "Waterborne polyurethane (WBPU) adhesive with varying amounts of dimethylol propionic acid (DMPA) was synthesized by prepolymer process and blended with polyisocyanate hardener. The mean particle size of the WBPU dispersion decreased with increasing DMPA content. 1H NMR spectroscopy confirmed the formation of allophanate bonds and biuret bonds due to the reaction of hardener NCO with urethane/urea groups. The optimum NCO content with the greatest adhesive strength was dependent on the total content of urethane/urea groups in the WBPU molecules. The optimum NCO content increased with increasing number of urethane groups (DMPA content). The adhesion strength of WBPU adhesives was maximized at a molar ratio of hardener NCO to urethane/urea of about 0.28.",

keywords = "Adhesive strength, Hardener, Waterborne polyurethane",

author = "Rahman, \{Mohammad Mizanur\} and Kim, \{Han Do\}",

year = "2006",

month = dec,

doi = "10.1007/BF03218736",

language = "English",

volume = "14",

pages = "634--639",

journal = "Macromolecular Research",

issn = "1598-5032",

publisher = "Polymer Society of Korea",

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TY - JOUR

T1 - Effect of polyisocyanate hardener on waterborne polyurethane adhesive containing different amounts of ionic groups

AU - Rahman, Mohammad Mizanur

AU - Kim, Han Do

PY - 2006/12

Y1 - 2006/12

N2 - Waterborne polyurethane (WBPU) adhesive with varying amounts of dimethylol propionic acid (DMPA) was synthesized by prepolymer process and blended with polyisocyanate hardener. The mean particle size of the WBPU dispersion decreased with increasing DMPA content. 1H NMR spectroscopy confirmed the formation of allophanate bonds and biuret bonds due to the reaction of hardener NCO with urethane/urea groups. The optimum NCO content with the greatest adhesive strength was dependent on the total content of urethane/urea groups in the WBPU molecules. The optimum NCO content increased with increasing number of urethane groups (DMPA content). The adhesion strength of WBPU adhesives was maximized at a molar ratio of hardener NCO to urethane/urea of about 0.28.

AB - Waterborne polyurethane (WBPU) adhesive with varying amounts of dimethylol propionic acid (DMPA) was synthesized by prepolymer process and blended with polyisocyanate hardener. The mean particle size of the WBPU dispersion decreased with increasing DMPA content. 1H NMR spectroscopy confirmed the formation of allophanate bonds and biuret bonds due to the reaction of hardener NCO with urethane/urea groups. The optimum NCO content with the greatest adhesive strength was dependent on the total content of urethane/urea groups in the WBPU molecules. The optimum NCO content increased with increasing number of urethane groups (DMPA content). The adhesion strength of WBPU adhesives was maximized at a molar ratio of hardener NCO to urethane/urea of about 0.28.

KW - Adhesive strength

KW - Hardener

KW - Waterborne polyurethane

UR - https://www.scopus.com/pages/publications/33846323692

U2 - 10.1007/BF03218736

DO - 10.1007/BF03218736

M3 - Article

AN - SCOPUS:33846323692

SN - 1598-5032

VL - 14

SP - 634

EP - 639

JO - Macromolecular Research

JF - Macromolecular Research

IS - 6

ER -

Effect of polyisocyanate hardener on waterborne polyurethane adhesive containing different amounts of ionic groups

Abstract

Keywords

ASJC Scopus subject areas

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