Scheme 1. Preparation process of DMF based polyurethanes.
Figure 1. Viscosity of PUs.
Figure 2. FT-IR spectra of PUs.
Figure 3. DSC thermograms of PU films.
Figure 4. Storage modulus (a), loss modulus (b), and tan delta (c) of PU films.
Figure 5. TGA (a) and DTG (b) curves of PU films.
Figure 6. Stress-strain curves of PU films.
Figure 7. SEM micrographs of wet-type artificial leather based on nonwoven fabrics coated with DMF based polyurethane.
Table 1. Macroglycols used in this study
Table 2. Sample designation and composition of polyurethanes containing bio polyol
Table 3. Thermal and mechanical properties of polyurethanes films
참고문헌
- Hepburn, C., Polyurethane Elastomers, Elsevier, New York, 187-188 (1991).
- Chattopadhyay, D. K., and Raju, K. V. S. N., "Structural Engineering of Polyurethane Coatings for High Performance Applications," Prog. Polym. Sci., 32, 352-418 (2007). https://doi.org/10.1016/j.progpolymsci.2006.05.003
- Rahman, M. M., Hasneen, A., Lee, W. K., and Lim, K. T., "Preparation and Properties of Sol-gel Waterborne Polyurethane Adhesive," J. Sol-Gel. Sci. Technol., 67, 473-479 (2013). https://doi.org/10.1007/s10971-013-3103-9
- Krol, P., "Synthesis Methods, Chemical Structures and Phase Structures of Linear Polyurethanes. Properties and Applications of Linear Polyurethanes in Polyurethane Elastomers, Copolymers and Ionomers," Prog. Mater. Sci., 52, 915-1015 (2007). https://doi.org/10.1016/j.pmatsci.2006.11.001
- Zdrahala, R. J., and Zdrahala, I. J., "Biomedical Applications of Polyurethanes: A Review of Past Promises, Present Realities, and a Vibrant Future," J. Biomater. Appl., 14, 67-90 (1999). https://doi.org/10.1177/088532829901400104
- ICIS Chemical Business Americas Oct. 30th, (2011).
- Mohanty, A. K., Misra, M., and Hinrichsen, G., "Biofibres, Biodegradable Polymers and Bio-composites: An Overview," Macromol. Mater. Eng., 1, 276-277 (2000).
- http://www.etoday.co.kr/news/section/newsview.php?idxno=1422000 (accessed Dec. 2016).
- Hemmrich, J., Fikkert, J., and Berg, M., "Porous Structural Foams Resulting from Aggregate Modification in Polyurethane Dispersions by Means of Isothermic Foam Coagulation," J. Ind. Textil., 22(4), 268-278 (1993). https://doi.org/10.1177/152808379302200404
- Fukushima, O., Hayanami, H., and Nagoshi, K., "Method for Manufacturing Synthetic Leather," U. S. Patent No. 3,424,604 (1969).
- Kesselmeier, J., and Staudt, M., "Biogenic Volatile Organic Compounds (VOC): An Overview on Emission, Physiology and Ecology," J. Atmos. Chem., 33, 23-88 (1999). https://doi.org/10.1023/A:1006127516791
- Dieterich, D., Keberle, W., and Witt, H., "Polyurethane Ionomers a New Class of Block Polymers," Angew. Chem. Int. Ed. Engl., 9, 40-50 (1970). https://doi.org/10.1002/anie.197000401
- Billmeyer, JR. F. W., Textbook of Polymer Science, Wiley, New York, 313-326 (2003).
- Huang, W. M., Yang, B., and Fu, Y. Q., Polyurethane Shape Memory Polymer, CRC Press, Boca Raton, 34-36 (2003).
- Fried, J. R., Polymer Science and Technology, Prentice Hall PTR, New Jersey, 180-182 (2003).