Enhanced Mechanical and Thermal Properties of Chain-Extended Waterborne Polyurethane Coatings with Cellulose Acetate Butyrateopen access
- Authors
- Kwon, Yong-Rok; Kim, Hae-Chan; Kim, Jung-Soo; So, Ju-Hee; Chang, Young-Wook; Kim, Dong-Hyun
- Issue Date
- Oct-2022
- Publisher
- MDPI Open Access Publishing
- Keywords
- waterborne polyurethane; cellulose acetate butyrate; chain extender; tensile strength; microphase separation
- Citation
- Polymers, v.14, no.19, pp 1 - 12
- Pages
- 12
- Indexed
- SCIE
SCOPUS
- Journal Title
- Polymers
- Volume
- 14
- Number
- 19
- Start Page
- 1
- End Page
- 12
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/112646
- DOI
- 10.3390/polym14194062
- ISSN
- 2073-4360
- Abstract
- A series of waterborne polyurethane (WPU) dispersions were prepared by chain-extending a prepolymer made of polyester diol, isophorone diisocyanate, and dimethylol propionic acid using cellulose acetate butyrate (CAB). The particle size and viscosity of the WPU dispersion were measured. In addition, we investigated the effects of CAB on the thermal, mechanical, and optical properties of WPU films. The use of CAB effectively improved the crosslinking degree of the WPUs, increasing the thermal stability and water resistance of the corresponding films. In particular, CAB increased the tensile strength of the WPU films up to 67%, while maintaining their elongation at break unchanged. In addition, CAB improved the optical transmittance by reducing the microphase separation between the soft and hard segments of PU. The rough surface structure of the WPU films formed by CAB led to improved matting properties.
- Files in This Item
-
- Appears in
Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/112646)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.