Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/97037
Title: Reinforcement of polyether polyurethane with dopamine-modified clay : the role of interfacial hydrogen bonding
Authors: Phua, Si Lei
Yang, Liping
Toh, Cher Ling
Huang, Shu
Tsakadze, Zviad
Lau, Soo Khim
Mai, Yiu-Wing
Lu, Xuehong
Issue Date: 2012
Source: Phua, S. L., Yang, L., Toh, C. L., Huang, S., Tsakadze, Z., Lau, S. K., Mai, Y. W., & Lu, X. (2012). Reinforcement of Polyether Polyurethane with Dopamine-Modified Clay: The Role of Interfacial Hydrogen Bonding. ACS Applied Materials & Interfaces, 4(9), 4571-4578.
Phua, S. L., Yang, L., Toh, C. L., Huang, S., Tsakadze, Z., Lau, S. K., et al. (2012). Reinforcement of Polyether Polyurethane with Dopamine-Modified Clay: The Role of Interfacial Hydrogen Bonding. ACS Applied Materials & Interfaces, 4(9), 4571-4578.
Series/Report no.: ACS applied materials & interfaces
Abstract: Dopamine-modified clay (D-clay) was successfully dispersed into polyether polyurethane (PU) by solvent blending. It is found that the incorporation of D-clay into PU gives rise to significant improvements in mechanical properties, including initial modulus, tensile strength, and ultimate elongation, at a very low clay loading. The large reinforcement could be attributed to the hydrogen bonds between the hard segments of PU and stiff D-clay layers that lead to more effective interfacial stress transfer between the polymer and D-clay. Besides, the interactions between D-clay and PU are also stronger than those between Cloisite 30B organoclay and the PU chains. Consequently, at a similar clay loading, the PU/D-clay nanocomposite has much higher storage modulus than the PU/organoclay nanocomposite at elevated temperatures.
URI: https://hdl.handle.net/10356/97037
http://hdl.handle.net/10220/10271
ISSN: 1944-8244
DOI: http://dx.doi.org/10.1021/am300947b
Rights: © 2012 American Chemical Society.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

Google ScholarTM

Check

Altmetric

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.