Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14250
Title: Development of isocyanate-modified acrylic emulsion polymers for waterborne coatings
Authors: LAI WAN VOON
Keywords: acrylic polyurethane latex preparations and characterizations
Issue Date: 7-Dec-2004
Source: LAI WAN VOON (2004-12-07). Development of isocyanate-modified acrylic emulsion polymers for waterborne coatings. ScholarBank@NUS Repository.
Abstract: This thesis focused on the development of acrylic polyurethane (APU) latex. The core-shell hydroxyl acrylic was synthesized via two-stage emulsion polymerization and it was further reacted with isophorone diisocyanate to produce APU latex. Non core-shell latex was prepared for comparisons. We had attempted to incorporate isobornyl methacrylate into the hydroxyl acrylic during the core or the shell emulsion polymerization.Fourier Transform Infrared Spectroscopy was used to identify the urethane/ urea linkage and to determine the isocyanate residue in the polymer film. The surface compositions of the APU latex were analyzed by X-ray Photoelectron Spectroscopy. The Tg measured by Differential Scanning Calorimetry and Minimum Film Formation Temperature of the APU latex were determined. The storage stability of the APU latex was monitored by the gradual shift in the particle size distribution during a pre-determined storage period at 50i??C.
URI: http://scholarbank.nus.edu.sg/handle/10635/14250
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
01-LWV-Prelude.pdf117.8 kBAdobe PDF

OPEN

NoneView/Download
02-LWV-Chap1-3.pdf659.03 kBAdobe PDF

OPEN

NoneView/Download
03-LWV-Chap4.pdf1.38 MBAdobe PDF

OPEN

NoneView/Download
04-LWV-Chap5-ref.pdf121.08 kBAdobe PDF

OPEN

NoneView/Download
05-LWV-appen1.pdf708.05 kBAdobe PDF

OPEN

NoneView/Download
06-LWV-appen2.pdf662.54 kBAdobe PDF

OPEN

NoneView/Download
07-LWV-appen3.pdf666.27 kBAdobe PDF

OPEN

NoneView/Download
08-LWV-appen4.pdf503.87 kBAdobe PDF

OPEN

NoneView/Download
09-LWV-appen5.pdf534.78 kBAdobe PDF

OPEN

NoneView/Download
10-LWV-appen-2n3.pdf201.11 kBAdobe PDF

OPEN

NoneView/Download

Page view(s)

584
checked on Dec 11, 2017

Download(s)

3,695
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.